Make sure to detect short control-message transfers rather than continue
with zero-initialised data when retrieving modem status and during
device initialisation.
Fixes: 52af954599 ("USB: add USB serial ssu100 driver")
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Make sure to detect short control transfers and return zero on success
when retrieving the modem status.
This fixes the TIOCMGET implementation which since e1ed212d85 ("USB:
spcp8x5: add proper modem-status support") has returned TIOCM_LE on
successful retrieval, and avoids leaking bits from the stack on short
transfers.
This also fixes the carrier-detect implementation which since the above
mentioned commit unconditionally has returned true.
Fixes: e1ed212d85 ("USB: spcp8x5: add proper modem-status support")
Cc: stable <stable@vger.kernel.org>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Make sure to detect short control-message transfers when fetching
modem and line state in open and when retrieving registers.
This specifically makes sure that an errno is returned to user space on
errors in TIOCMGET instead of a zero bitmask.
Also drop the unused getdevice function which also lacked appropriate
error handling.
Fixes: f7a33e608d ("USB: serial: add quatech2 usb to serial driver")
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Make sure to return an error on zero-length transfers when retrieving
the line settings even if the driver currently ignores the return value.
Also remove a redundant check for short transfer when setting the line
settings.
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Make sure to detect short transfers when reading a device register.
The modem-status handling had sufficient error checks in place, but move
handling of short transfers into the register accessor function itself
for consistency.
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Make sure to log an error on short transfers when reading a device
register.
Also clear the provided buffer (which if often an uninitialised
automatic variable) on errors as the driver currently does not bother to
check for errors.
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Make sure to detect short control-message transfers so that errors are
logged when reading the modem status at open.
Note that while this also avoids initialising the modem status using
uninitialised heap data, these bits could not leak to user space as they
are currently not used.
Fixes: 1da177e4c3 ("Linux-2.6.12-rc2")
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Remove code that allocated but never used a buffer during open.
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Make sure to detect short control-message transfers and log an error
when reading incomplete manufacturer and boot descriptors.
Note that the default all-zero descriptors will now be used after a
short transfer is detected instead of partially initialised ones.
Fixes: 1da177e4c3 ("Linux-2.6.12-rc2")
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Use a dedicated buffer for the DMA transfer and make sure to detect
short transfers to avoid parsing a corrupt descriptor.
Fixes: 6e8cf7751f ("USB: add EPIC support to the io_edgeport driver")
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Make sure to detect short responses when reading the latency timer to
avoid using stale buffer data.
Note that no heap data would currently leak through sysfs as
ASYNC_LOW_LATENCY is set by default.
Fixes: 1da177e4c3 ("Linux-2.6.12-rc2")
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Make sure to detect short responses when fetching the modem status in
order to avoid parsing uninitialised buffer data and having bits of it
leak to user space.
Note that we still allow for short 1-byte responses.
Fixes: 1da177e4c3 ("Linux-2.6.12-rc2")
Cc: stable <stable@vger.kernel.org>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Fix open error handling which failed to detect errors when reading the
MSR and LSR registers, something which could lead to the shadow
registers being initialised from errnos.
Note that calling the generic close implementation is sufficient in the
error paths as the interrupt urb has not yet been submitted and the
register updates have not been made.
Fixes: f4c1e8d597 ("USB: ark3116: Make existing functions 16450-aware
and add close and release functions.")
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
The current implementation failed to detect short transfers, something
which could lead to bits of the uninitialised heap transfer buffer
leaking to user space.
Fixes: 149fc791a4 ("USB: ark3116: Setup some basic infrastructure for
new ark3116 driver.")
Fixes: f4c1e8d597 ("USB: ark3116: Make existing functions 16450-aware
and add close and release functions.")
Cc: stable <stable@vger.kernel.org>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Remove unused termios structure from private data that was left by an
earlier purge by commit b1cff285ae ("usb serial: Eliminate bogus ioctl
code").
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Drop redundant packed attribute from the port-settings struct which is
already 1-byte aligned. Also replace __u8 with u8 for the field types as
this is not a structure we share with user space.
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Remove dead and broken code that only served as a reminder to one day
implement modem control.
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Replace a couple of dev_info with dev_dbg and remove another.
Also use the port device for logging, and include a radix prefix when
logging the baudrate.
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Some CH340 devices appear unable to change the initial LCR settings, so
set a sane 8N1 default during probe to enable basic support for such
devices.
Also drop a redundant LCR read during device initialisation.
Signed-off-by: Johan Hovold <johan@kernel.org>
Rename the line-control-register variable in set_termios to "lcr" and
use u8 type to match the shadow register.
Signed-off-by: Johan Hovold <johan@kernel.org>
Rename the shadow modem-status register currently named "line_status" to
the less confusing "msr".
Also rename the helper function used to parse the interrupt data.
Signed-off-by: Johan Hovold <johan@kernel.org>
The modem-status register was read as part of device configuration at
port_probe and then again at open (and reset-resume). During open (and
reset-resume) the MSR was read before submitting the interrupt URB,
something which could lead to an MSR-change going unnoticed when it
races with open (reset-resume).
Fix this by dropping the redundant reconfiguration of the port at every
open, and only read the MSR after the interrupt URB has been submitted.
Fixes: 664d5df92e ("USB: usb-serial ch341: support for DTR/RTS/CTS")
Signed-off-by: Johan Hovold <johan@kernel.org>
The variable havedata was only being set but never used afterwards.
Signed-off-by: Sudip Mukherjee <sudip.mukherjee@codethink.co.uk>
Signed-off-by: Johan Hovold <johan@kernel.org>
We need the USB fixes in here to make merges easier/possible with the
other sub-maintainer USB trees.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Uninitialized char* causes a sparse build-warning, fix it up by
initializing it to NULL.
Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Nicholas Mc Guire <hofrat@osadl.org>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
USBTrdTim must be programmed to 0x5 when phy has a UTMI+ 16-bit wide
interface or 0x9 when it has a 8-bit wide interface.
GUSBCFG reset value (Value After Reset: 0x1400) sets USBTrdTim to 0x5.
In case of 8-bit UTMI+, without clearing GUSBCFG.USBTRDTIM mask, USBTrdTim
results in 0xD (0x5 | 0x9).
That's why we need to clear GUSBCFG.USBTRDTIM mask before setting USBTrdTim
value, to ensure USBTrdTim is correctly set in case of 8-bit UTMI+.
Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Since we need to change the implementation, stop exposing internals.
Provide kref_read() to read the current reference count; typically
used for debug messages.
Kills two anti-patterns:
atomic_read(&kref->refcount)
kref->refcount.counter
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
These fixes address a number of issues in the ch341 driver and includes
a partial revert of a change in how we set the line settings that went
into 4.10-rc1 but which turned out to have undesired side effects. This
included deasserting the modem-control lines when configuring the
device, but also prevented a certain class of CH340 devices from working
with the driver.
Included are also two fixes for two minor information leaks in
kl5kusb105 and ch341 due to failures to detect short control transfers.
Signed-off-by: Johan Hovold <johan@kernel.org>
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Merge tag 'usb-serial-4.10-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial into usb-linus
Johan writes:
USB-serial fixes for v4.10-rc4
These fixes address a number of issues in the ch341 driver and includes
a partial revert of a change in how we set the line settings that went
into 4.10-rc1 but which turned out to have undesired side effects. This
included deasserting the modem-control lines when configuring the
device, but also prevented a certain class of CH340 devices from working
with the driver.
Included are also two fixes for two minor information leaks in
kl5kusb105 and ch341 due to failures to detect short control transfers.
Signed-off-by: Johan Hovold <johan@kernel.org>
Commit bbe097f092 ("usb: gadget: udc: atmel: fix endpoint name")
introduced a memory leak when unbinding the driver. The endpoint names
would not be freed. Solve that by including the name as a string in struct
usba_ep so it is freed when the endpoint is.
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Axius clock error path returns without disabling clock and suspend clock.
Fix it to disable them before returning error.
Reviewed-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
I've found when booting HiKey with the usb gadget cable attached
if I then try to connect via adb, I get an infinite spew of:
dwc2 f72c0000.usb: dwc2_hsotg_ep_sethalt(ep ffffffc0790ecb18 ep1out, 0)
dwc2 f72c0000.usb: dwc2_hsotg_ep_sethalt(ep ffffffc0790eca18 ep1in, 0)
It seems that the usb autosuspend is suspending the bus shortly
after bootup when the gadget cable is attached. So when adbd
then tries to use the device, it doesn't work and it then tries
to restart it over and over via the ep_sethalt calls (via
FUNCTIONFS_CLEAR_HALT ioctl).
Chen Yu suggested this patch to avoid suspending if we're
in device mode, and it avoids the problem.
Cc: Wei Xu <xuwei5@hisilicon.com>
Cc: Guodong Xu <guodong.xu@linaro.org>
Cc: Amit Pundir <amit.pundir@linaro.org>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: John Youn <johnyoun@synopsys.com>
Cc: Douglas Anderson <dianders@chromium.org>
Cc: Chen Yu <chenyu56@huawei.com>
Cc: Kishon Vijay Abraham I <kishon@ti.com>
Cc: Felipe Balbi <felipe.balbi@linux.intel.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: linux-usb@vger.kernel.org
Suggested-by: Chen Yu <chenyu56@huawei.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Commit 05ee799f20 ("usb: dwc2: Move gadget settings into core_params")
changes to type u16 for DT binding "g-rx-fifo-size" and
"g-np-tx-fifo-size" but use type u32 for "g-tx-fifo-size". Finally the
the first two parameters cannot be passed successfully with wrong data
format. This is found the data transferring broken on 96boards Hikey.
This patch is to change all parameters to u32 type, and verified on
Hikey board the DT parameters can pass successfully.
[johnyoun: minor rebase]
Signed-off-by: Leo Yan <leo.yan@linaro.org>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Tested-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
When zero endpoints are declared for a function, there is no endpoint
to disable, enable or free, so replace do...while loops with while loops.
Change pre-decrement to post-decrement to iterate the same number of times
when there are endpoints to process.
Signed-off-by: Vincent Pelletier <plr.vincent@gmail.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Remove DMA memory free from EP disable flow by replacing
dma_alloc_coherent with dmam_alloc_coherent.
Tested-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Vardan Mikayelyan <mvardan@synopsys.com>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
'cdev->os_desc_req' has been allocated with 'usb_ep_alloc_request()' so
'usb_ep_free_request()' should be used to free it.
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
If a URB is killed while the host is removed we can end up in a situation
where the hub thread takes the roothub device lock, and waits for
the URB to be given back by xhci-hcd, blocking the host remove code.
xhci-hcd tries to stop the endpoint and give back the urb, but can't
as the host is removed from PCI bus at the same time, preventing the normal
way of giving back urb.
Instead we need to rely on the stop command timeout function to give back
the urb. This xhci_stop_endpoint_command_watchdog() timeout function
used a XHCI_STATE_DYING flag to indicate if the timeout function is already
running, but later this flag has been taking into use in other places to
mark that xhci is dying.
Remove checks for XHCI_STATE_DYING in xhci_urb_dequeue. We are still
checking that reading from pci state does not return 0xffffffff or that
host is not halted before trying to stop the endpoint.
This whole area of stopping endpoints, giving back URBs, and the wathdog
timeout need rework, this fix focuses on solving a specific deadlock
issue that we can then send to stable before any major rework.
Cc: <stable@vger.kernel.org>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
A short control transfer would currently fail to be detected, something
which could lead to stale buffer data being used as valid input.
Check for short transfers, and make sure to log any transfer errors.
Note that this also avoids leaking heap data to user space (TIOCMGET)
and the remote device (break control).
Fixes: 6ce7610478 ("USB: Driver for CH341 USB-serial adaptor")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
MUSB driver now has runtime PM support, but the debugfs driver misses
the PM _get/_put() calls, which could cause MUSB register access
failure.
Cc: stable@vger.kernel.org # 4.9+
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The driver put a constant buffer of all zeros on the stack and
pointed a scatterlist entry at it. This doesn't work with virtual
stacks. Use ZERO_PAGE instead.
Cc: stable@vger.kernel.org # 4.9 only
Reported-by: Eric Biggers <ebiggers3@gmail.com>
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Promote a variable keeping track of USB transfer memory usage to a
wider data type and allow for higher bandwidth transfers from a large
number of USB devices connected to a single host.
Signed-off-by: Mateusz Berezecki <mateuszb@fastmail.fm>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Returning from for_each_available_child_of_node() loop requires cleaning
up node refcount. Error paths lacked it so for example in case of
deferred probe, the refcount of phy node was left increased.
Fixes: 6d40500ac9 ("usb: ehci/ohci-exynos: Fix of_node_put() for child when getting PHYs")
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Reviewed-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Returning from for_each_available_child_of_node() loop requires cleaning
up node refcount. Error paths lacked it so for example in case of
deferred probe, the refcount of phy node was left increased.
Fixes: 6d40500ac9 ("usb: ehci/ohci-exynos: Fix of_node_put() for child when getting PHYs")
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Reviewed-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The MIPS based MT7621 shares the same XHCI core as the newer generation of
ARM based SoCs. The driver works out of the box and we only need to make it
buildable in Kconfig.
Signed-off-by: John Crispin <john@phrozen.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
trivial fix to typo in dev_dbg message
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Defer probe if PHY is missing. E.g. on Nokia 770 several modules needs
to be loaded to get the PHY going and ohci-omap should wait for those.
Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The current implementation failed to detect short transfers when
attempting to read the line state, and also, to make things worse,
logged the content of the uninitialised heap transfer buffer.
Fixes: abf492e7b3 ("USB: kl5kusb105: fix DMA buffers on stack")
Fixes: 1da177e4c3 ("Linux-2.6.12-rc2")
Cc: stable <stable@vger.kernel.org>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Revert to using direct register writes to set the divisor and
line-control registers.
A recent change switched to using the init vendor command to update
these registers, something which also enabled support for CH341A
devices. It turns out that simply setting bit 7 in the divisor register
is sufficient to support CH341A and specifically prevent data from being
buffered until a full endpoint-size packet (32 bytes) has been received.
Using the init command also had the side-effect of temporarily
deasserting the DTR/RTS signals on every termios change (including
initialisation on open) something which for example could cause problems
in setups where DTR is used to trigger a reset.
Fixes: 4e46c410e0 ("USB: serial: ch341: reinitialize chip on
reconfiguration")
Signed-off-by: Johan Hovold <johan@kernel.org>
A recent change added support for modifying the default line-control
settings, but did not make sure that the modified settings were used as
part of reconfiguration after a device has been reset during resume.
This caused a port that was open before suspend to be unusable until
being closed and reopened.
Fixes: ba781bdf86 ("USB: serial: ch341: add support for parity, frame
length, stop bits")
Signed-off-by: Johan Hovold <johan@kernel.org>
Fix reset-resume handling which failed to resubmit the read and
interrupt URBs, thereby leaving a port that was open before suspend in a
broken state until closed and reopened.
Fixes: 1ded7ea47b ("USB: ch341 serial: fix port number changed after
resume")
Fixes: 2bfd1c96a9 ("USB: serial: ch341: remove reset_resume callback")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Make sure to stop the interrupt URB before returning on errors during
open.
Fixes: 664d5df92e ("USB: usb-serial ch341: support for DTR/RTS/CTS")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
The modem-control signals are managed by the tty-layer during open and
should not be asserted prematurely when set_termios is called from
driver open.
Also make sure that the signals are asserted only when changing speed
from B0.
Fixes: 664d5df92e ("USB: usb-serial ch341: support for DTR/RTS/CTS")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
The private baud_rate variable is used to configure the port at open and
reset-resume and must never be set to (and left at) zero or reset-resume
and all further open attempts will fail.
Fixes: aa91def41a ("USB: ch341: set tty baud speed according to tty
struct")
Fixes: 664d5df92e ("USB: usb-serial ch341: support for DTR/RTS/CTS")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
DTR and RTS will be asserted by the tty-layer when the port is opened
and deasserted on close (if HUPCL is set). Make sure the initial state
is not-asserted before the port is first opened as well.
Fixes: 664d5df92e ("USB: usb-serial ch341: support for DTR/RTS/CTS")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
When checking a new device's descriptors, the USB core does not check
for duplicate endpoint addresses. This can cause a problem when the
sysfs files for those endpoints are created; trying to create multiple
files with the same name will provoke a WARNING:
WARNING: CPU: 2 PID: 865 at fs/sysfs/dir.c:31 sysfs_warn_dup+0x8a/0xa0
sysfs: cannot create duplicate filename
'/devices/platform/dummy_hcd.0/usb2/2-1/2-1:64.0/ep_05'
Kernel panic - not syncing: panic_on_warn set ...
CPU: 2 PID: 865 Comm: kworker/2:1 Not tainted 4.9.0-rc7+ #34
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011
Workqueue: usb_hub_wq hub_event
ffff88006bee64c8 ffffffff81f96b8a ffffffff00000001 1ffff1000d7dcc2c
ffffed000d7dcc24 0000000000000001 0000000041b58ab3 ffffffff8598b510
ffffffff81f968f8 ffffffff850fee20 ffffffff85cff020 dffffc0000000000
Call Trace:
[< inline >] __dump_stack lib/dump_stack.c:15
[<ffffffff81f96b8a>] dump_stack+0x292/0x398 lib/dump_stack.c:51
[<ffffffff8168c88e>] panic+0x1cb/0x3a9 kernel/panic.c:179
[<ffffffff812b80b4>] __warn+0x1c4/0x1e0 kernel/panic.c:542
[<ffffffff812b8195>] warn_slowpath_fmt+0xc5/0x110 kernel/panic.c:565
[<ffffffff819e70ca>] sysfs_warn_dup+0x8a/0xa0 fs/sysfs/dir.c:30
[<ffffffff819e7308>] sysfs_create_dir_ns+0x178/0x1d0 fs/sysfs/dir.c:59
[< inline >] create_dir lib/kobject.c:71
[<ffffffff81fa1b07>] kobject_add_internal+0x227/0xa60 lib/kobject.c:229
[< inline >] kobject_add_varg lib/kobject.c:366
[<ffffffff81fa2479>] kobject_add+0x139/0x220 lib/kobject.c:411
[<ffffffff82737a63>] device_add+0x353/0x1660 drivers/base/core.c:1088
[<ffffffff82738d8d>] device_register+0x1d/0x20 drivers/base/core.c:1206
[<ffffffff82cb77d3>] usb_create_ep_devs+0x163/0x260 drivers/usb/core/endpoint.c:195
[<ffffffff82c9f27b>] create_intf_ep_devs+0x13b/0x200 drivers/usb/core/message.c:1030
[<ffffffff82ca39d3>] usb_set_configuration+0x1083/0x18d0 drivers/usb/core/message.c:1937
[<ffffffff82cc9e2e>] generic_probe+0x6e/0xe0 drivers/usb/core/generic.c:172
[<ffffffff82caa7fa>] usb_probe_device+0xaa/0xe0 drivers/usb/core/driver.c:263
This patch prevents the problem by checking for duplicate endpoint
addresses during enumeration and skipping any duplicates.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Reported-by: Andrey Konovalov <andreyknvl@google.com>
Tested-by: Andrey Konovalov <andreyknvl@google.com>
CC: <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The gpiod_get* function family does not want the -gpio suffix.
Use devm_gpiod_get_index_optional instead of devm_gpiod_get_optional.
The descriptor based APIs handle active high/low automatically.
The vbus-gpios are output, request enable while getting the gpio.
Don't try to get any vbus-gpios for ports outside num-ports.
WTF? Big sigh.
Fixes: 054d4b7b57 ("usb: ohci-at91: Use descriptor-based gpio APIs")
Signed-off-by: Peter Rosin <peda@axentia.se>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This device gives the following error on detection.
xhci_hcd 0000:00:11.0: ERROR Transfer event for disabled endpoint or
incorrect stream ring
The same error is not seen when it is added to unusual_device
list with US_FL_NO_REPORT_OPCODES passed.
Signed-off-by: George Cherian <george.cherian@cavium.com>
Signed-off-by: Oliver Neukum <oneukun@suse.com>
CC: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
If CONFIG_PM=n:
drivers/usb/core/hub.c:107: warning: ‘hub_usb3_port_prepare_disable’ declared inline after being called
drivers/usb/core/hub.c:107: warning: previous declaration of ‘hub_usb3_port_prepare_disable’ was here
To fix this, move hub_port_disable() after
hub_usb3_port_prepare_disable(), and adjust forward declarations.
Fixes: 37be66767e ("usb: hub: Fix auto-remount of safely removed or ejected USB-3 devices")
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The function bfin_fifo_offset is defined but not used:
drivers/usb/musb/blackfin.c:36:12: warning: ‘bfin_fifo_offset’ defined
but not used [-Wunused-function]
static u32 bfin_fifo_offset(u8 epnum)
^~~~~~~~~~~~~~~~
Adding bfin_fifo_offset to bfin_ops fixes this warning and allows musb
core to call this function instead of default_fifo_offset.
Fixes: cc92f6818f ("usb: musb: Populate new IO functions for blackfin")
Signed-off-by: Jérémy Lefaure <jeremy.lefaure@lse.epita.fr>
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The function musb_run_resume_work is called only when CONFIG_PM is
enabled. So this function should not be defined when CONFIG_PM is
disabled. Otherwise the compiler issues a warning:
drivers/usb/musb/musb_core.c:2057:12: error: ‘musb_run_resume_work’ defined but
not used [-Werror=unused-function]
static int musb_run_resume_work(struct musb *musb)
^~~~~~~~~~~~~~~~~~~~
Signed-off-by: Jérémy Lefaure <jeremy.lefaure@lse.epita.fr>
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
When unloading omap2430, we can get the following splat:
WARNING: CPU: 1 PID: 295 at kernel/irq/manage.c:1478 __free_irq+0xa8/0x2c8
Trying to free already-free IRQ 4
...
[<c01a8b78>] (free_irq) from [<bf0aea84>]
(musbhs_dma_controller_destroy+0x28/0xb0 [musb_hdrc])
[<bf0aea84>] (musbhs_dma_controller_destroy [musb_hdrc]) from
[<bf09f88c>] (musb_remove+0xf0/0x12c [musb_hdrc])
[<bf09f88c>] (musb_remove [musb_hdrc]) from [<c056a384>]
(platform_drv_remove+0x24/0x3c)
...
This is because the irq number in use is 260 nowadays, and the dma
controller is using u8 instead of int.
Fixes: 6995eb68aa ("USB: musb: enable low level DMA operation for Blackfin")
Signed-off-by: Tony Lindgren <tony@atomide.com>
[b-liu@ti.com: added Fixes tag]
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
During dma teardown for dequque urb, if musb load is high, musb might
generate bogus rx ep interrupt even when the rx fifo is flushed. In such
case any of the follow log messages could happen.
musb_host_rx 1853: BOGUS RX2 ready, csr 0000, count 0
musb_host_rx 1936: RX3 dma busy, csr 2020
As mentioned in the current inline comment, clearing ep interrupt in the
teardown path avoids the bogus interrupt, so implement clear_ep_rxintr()
callback.
This bug seems to be existing since the initial driver for musb support,
but I only validated the fix back to v4.1, so only cc stable for v4.1+.
cc: stable@vger.kernel.org # 4.1+
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
During dma teardown for dequque urb, if musb load is high, musb might
generate bogus rx ep interrupt even when the rx fifo is flushed. In such
case any of the follow log messages could happen.
musb_host_rx 1853: BOGUS RX2 ready, csr 0000, count 0
musb_host_rx 1936: RX3 dma busy, csr 2020
As mentioned in the current inline comment, clearing ep interrupt in the
teardown path avoids the bogus interrupt.
Clearing ep interrupt is platform dependent, so this patch adds a
platform callback to allow glue driver to clear the ep interrupt.
This bug seems to be existing since the initial driver for musb support,
but I only validated the fix back to v4.1, so only cc stable for v4.1+.
cc: stable@vger.kernel.org # 4.1+
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
These fixes address a number of long-standing issues in various
USB-serial drivers which would lead to crashes should a malicious device
lack the expected endpoints.
Included are also a few related fixes, and a couple of unrelated ones
that were found during my survey (e.g. a memleak and a
sleep-while-atomic).
A compiler warning revealed an error-handling issue in the new f81534
driver which is also fixed.
Signed-off-by: Johan Hovold <johan@kernel.org>
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Merge tag 'usb-serial-4.10-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial into usb-linus
Johan writes:
USB-serial fixes for v4.10-rc3
These fixes address a number of long-standing issues in various
USB-serial drivers which would lead to crashes should a malicious device
lack the expected endpoints.
Included are also a few related fixes, and a couple of unrelated ones
that were found during my survey (e.g. a memleak and a
sleep-while-atomic).
A compiler warning revealed an error-handling issue in the new f81534
driver which is also fixed.
Signed-off-by: Johan Hovold <johan@kernel.org>
Fix NULL-pointer dereference in open() should the device lack the
expected endpoints:
Unable to handle kernel NULL pointer dereference at virtual address 00000030
...
PC is at spcp8x5_open+0x30/0xd0 [spcp8x5]
Fixes: 619a6f1d14 ("USB: add usb-serial spcp8x5 driver")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
The write URB was being killed using the synchronous interface while
holding a spin lock in close().
Simply drop the lock and busy-flag update, something which would have
been taken care of by the completion handler if the URB was in flight.
Fixes: f7a33e608d ("USB: serial: add quatech2 usb to serial driver")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Fix NULL-pointer dereference in open() should a type-0 or type-1 device
lack the expected endpoints:
Unable to handle kernel NULL pointer dereference at virtual address 00000030
...
PC is at pl2303_open+0x38/0xec [pl2303]
Note that a missing interrupt-in endpoint would have caused open() to
fail.
Fixes: 1da177e4c3 ("Linux-2.6.12-rc2")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Fix NULL-pointer dereference in open() should the device lack the
expected endpoints:
Unable to handle kernel NULL pointer dereference at virtual address 00000030
...
PC is at oti6858_open+0x30/0x1d0 [oti6858]
Note that a missing interrupt-in endpoint would have caused open() to
fail.
Fixes: 49cdee0ed0 ("USB: oti6858 usb-serial driver (in Nokia CA-42
cable)")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
The interrupt URB is killed at final port close since commit
0de9a7024e ("USB: overhaul of mos7840 driver").
Fixes: 0de9a7024e ("USB: overhaul of mos7840 driver")
Signed-off-by: Johan Hovold <johan@kernel.org>
Fix NULL-pointer dereference in open() should the device lack the
expected endpoints:
Unable to handle kernel NULL pointer dereference at virtual address 00000030
...
PC is at mos7840_open+0x88/0x8dc [mos7840]
Note that we continue to treat the interrupt-in endpoint as optional for
now.
Fixes: 3f5429746d ("USB: Moschip 7840 USB-Serial Driver")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Since commit b69578df7e ("USB: usbserial: mos7720: add support for
parallel port on moschip 7715"), the interrupt urb is no longer
submitted at first port open and the endpoint-address initialisation at
port-probe is no longer used.
Signed-off-by: Johan Hovold <johan@kernel.org>
A static usb-serial-driver structure that is used to initialise the
interrupt URB was modified during probe depending on the currently
probed device type, something which could break a parallel probe of a
device of a different type.
Fix this up by overriding the default completion callback for MCS7715
devices in attach() instead. We may want to use two usb-serial driver
instances for the two types later.
Fixes: fb088e335d ("USB: serial: add support for serial port on the
moschip 7715")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Do not submit the interrupt URB until after the parport has been
successfully registered to avoid another use-after-free in the
completion handler when accessing the freed parport private data in case
of a racing completion.
Fixes: b69578df7e ("USB: usbserial: mos7720: add support for parallel
port on moschip 7715")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
The interrupt URB was submitted on probe but never stopped on probe
errors. This can lead to use-after-free issues in the completion
handler when accessing the freed usb-serial struct:
Unable to handle kernel paging request at virtual address 6b6b6be7
...
[<bf052e70>] (mos7715_interrupt_callback [mos7720]) from [<c052a894>] (__usb_hcd_giveback_urb+0x80/0x140)
[<c052a894>] (__usb_hcd_giveback_urb) from [<c052a9a4>] (usb_hcd_giveback_urb+0x50/0x138)
[<c052a9a4>] (usb_hcd_giveback_urb) from [<c0550684>] (musb_giveback+0xc8/0x1cc)
Fixes: b69578df7e ("USB: usbserial: mos7720: add support for parallel
port on moschip 7715")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Fix NULL-pointer dereference at port open if a device lacks the expected
bulk in and out endpoints.
Unable to handle kernel NULL pointer dereference at virtual address 00000030
...
[<bf071c20>] (mos7720_open [mos7720]) from [<bf0490e0>] (serial_port_activate+0x68/0x98 [usbserial])
[<bf0490e0>] (serial_port_activate [usbserial]) from [<c0470ca4>] (tty_port_open+0x9c/0xe8)
[<c0470ca4>] (tty_port_open) from [<bf049d98>] (serial_open+0x48/0x6c [usbserial])
[<bf049d98>] (serial_open [usbserial]) from [<c0469178>] (tty_open+0xcc/0x5cc)
Fixes: 0f64478cbc ("USB: add USB serial mos7720 driver")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Fix NULL-pointer dereference in write() should the device lack the
expected interrupt-out endpoint:
Unable to handle kernel NULL pointer dereference at virtual address 00000054
...
PC is at kobil_write+0x144/0x2a0 [kobil_sct]
Fixes: 1da177e4c3 ("Linux-2.6.12-rc2")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Check for the expected endpoints in attach() and fail loudly if not
present.
Note that failing to do this appears to be benign since da280e3488
("USB: keyspan_pda: clean up write-urb busy handling") which prevents a
NULL-pointer dereference in write() by never marking a non-existent
write-urb as free.
Fixes: 1da177e4c3 ("Linux-2.6.12-rc2")
Cc: stable <stable@vger.kernel.org> # < v3.3
Signed-off-by: Johan Hovold <johan@kernel.org>
Fix NULL-pointer dereference at open should the device lack a bulk-in or
bulk-out endpoint:
Unable to handle kernel NULL pointer dereference at virtual address 00000030
...
PC is at iuu_open+0x78/0x59c [iuu_phoenix]
Fixes: 07c3b1a100 ("USB: remove broken usb-serial num_endpoints
check")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Bind to the interface, but do not register any ports, after having
downloaded the firmware. The device will still disconnect and
re-enumerate, but this way we avoid an error messages from being logged
as part of the process:
io_ti: probe of 1-1.3:1.0 failed with error -5
Signed-off-by: Johan Hovold <johan@kernel.org>
Cancel the heartbeat work on driver unbind in order to avoid I/O after
disconnect in case the port is held open.
Note that the cancel in release() is still needed to stop the heartbeat
after late probe errors.
Fixes: 26c78daade ("USB: io_ti: Add heartbeat to keep idle EP/416
ports from disconnecting")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
In case a device is left in "boot-mode" we must not register any port
devices in order to avoid a NULL-pointer dereference on open due to
missing endpoints. This could be used by a malicious device to trigger
an OOPS:
Unable to handle kernel NULL pointer dereference at virtual address 00000030
...
[<bf0caa84>] (edge_open [io_ti]) from [<bf0b0118>] (serial_port_activate+0x68/0x98 [usbserial])
[<bf0b0118>] (serial_port_activate [usbserial]) from [<c0470ca4>] (tty_port_open+0x9c/0xe8)
[<c0470ca4>] (tty_port_open) from [<bf0b0da0>] (serial_open+0x48/0x6c [usbserial])
[<bf0b0da0>] (serial_open [usbserial]) from [<c0469178>] (tty_open+0xcc/0x5cc)
Fixes: 1da177e4c3 ("Linux-2.6.12-rc2")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Fix NULL-pointer dereference when clearing halt at open should a
malicious device lack the expected endpoints when in download mode.
Unable to handle kernel NULL pointer dereference at virtual address 00000030
...
[<bf011ed8>] (edge_open [io_ti]) from [<bf000118>] (serial_port_activate+0x68/0x98 [usbserial])
[<bf000118>] (serial_port_activate [usbserial]) from [<c0470ca4>] (tty_port_open+0x9c/0xe8)
[<c0470ca4>] (tty_port_open) from [<bf000da0>] (serial_open+0x48/0x6c [usbserial])
[<bf000da0>] (serial_open [usbserial]) from [<c0469178>] (tty_open+0xcc/0x5cc)
Fixes: 1da177e4c3 ("Linux-2.6.12-rc2")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Fix NULL-pointer dereference when initialising URBs at open should a
non-EPIC device lack a bulk-in or interrupt-in endpoint.
Unable to handle kernel NULL pointer dereference at virtual address 00000028
...
PC is at edge_open+0x24c/0x3e8 [io_edgeport]
Note that the EPIC-device probe path has the required sanity checks so
this makes those checks partially redundant.
Fixes: 1da177e4c3 ("Linux-2.6.12-rc2")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Make sure to free the URB transfer buffer in case submission fails (e.g.
due to a disconnect).
Fixes: 1da177e4c3 ("Linux-2.6.12-rc2")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Fix NULL-pointer dereference when clearing halt at open should the device
lack a bulk-out endpoint.
Unable to handle kernel NULL pointer dereference at virtual address 00000030
...
PC is at cyberjack_open+0x40/0x9c [cyberjack]
Fixes: 1da177e4c3 ("Linux-2.6.12-rc2")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Stop Endpoint command can come at any point and we
have no control of that. We should make sure to
handle COMP_STOP on SETUP phase as well, otherwise
urb->actual_length might be set to negative values
in some occasions such as below:
urb->length = 4;
build_control_transfer_td_for(urb, ep);
stop_endpoint(ep);
COMP_STOP:
[...]
urb->actual_length = urb->length - trb->length;
trb->length is 8 for SETUP stage (8 control request
bytes), so actual_length would be set to -4 in this
case.
While doing that, also make sure to use TRB_TYPE
field of the actual TRB instead of matching pointers
to figure out in which stage of the control transfer
we got our completion event.
Cc: <stable@vger.kernel.org>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Intel Apollo Lake also requires XHCI_PME_STUCK_QUIRK.
Adding its PCI ID to quirk.
Cc: <stable@vger.kernel.org>
Signed-off-by: Wan Ahmad Zainie <wan.ahmad.zainie.wan.mohamad@intel.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Current abort operation has race.
xhci_handle_command_timeout()
xhci_abort_cmd_ring()
xhci_write_64(CMD_RING_ABORT)
xhci_handshake(5s)
do {
check CMD_RING_RUNNING
udelay(1)
...
COMP_CMD_ABORT event
COMP_CMD_STOP event
xhci_handle_stopped_cmd_ring()
restart cmd_ring
CMD_RING_RUNNING become 1 again
} while ()
return -ETIMEDOUT
xhci_write_64(CMD_RING_ABORT)
/* can abort random command */
To do abort operation correctly, we have to wait both of COMP_CMD_STOP
event and negation of CMD_RING_RUNNING.
But like above, while timeout handler is waiting negation of
CMD_RING_RUNNING, event handler can restart cmd_ring. So timeout
handler never be notice negation of CMD_RING_RUNNING, and retry of
CMD_RING_ABORT can abort random command (BTW, I guess retry of
CMD_RING_ABORT was workaround of this race).
To fix this race, this moves xhci_handle_stopped_cmd_ring() to
xhci_abort_cmd_ring(). And timeout handler waits COMP_CMD_STOP event.
At this point, timeout handler is owner of cmd_ring, and safely
restart cmd_ring by using xhci_handle_stopped_cmd_ring().
[FWIW, as bonus, this way would be easily extend to add CMD_RING_PAUSE
operation]
[locks edited as patch is rebased on other locking fixes -Mathias]
Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This is preparation to fix abort operation race (See "xhci: Fix race
related to abort operation"). To make timeout sleepable, use
delayed_work instead of timer.
[change a newly added pending timer fix to pending work -Mathias]
Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
In command timer function, xhci_handle_command_timeout(), xhci->lock
is unlocked before call into xhci_abort_cmd_ring(). This might cause
race between the timer function and the event handler.
The xhci_abort_cmd_ring() function sets the CMD_RING_ABORT bit in the
command register and polling it until the setting takes effect. A stop
command ring event might be handled between writing the abort bit and
polling for it. The event handler will restart the command ring, which
causes the failure of polling, and we ever believed that we failed to
stop it.
As a bonus, this also fixes some issues of calling functions without
locking in xhci_handle_command_timeout().
Cc: <stable@vger.kernel.org> # 3.7+
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
If we get a command completion event at the same time as the command
timeout work starts on another cpu we might end up aborting the wrong
command.
If the command completion takes the xhci lock before the timeout work, it
will handle the command, pick the next command, mark it as current_cmd, and
re-queue the timeout work. When the timeout work finally gets the lock
It will start aborting the wrong command.
This case can be resolved by checking if the timeout work is pending inside
the timeout function itself. A new timeout work can only be pending if the
command completed and a new command was queued.
If there are no more commands pending then command completion will set
the current_cmd to NULL, which is already handled in the timeout work.
Cc: <stable@vger.kernel.org>
Reported-by: Baolin Wang <baolin.wang@linaro.org>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
When current command was supposed to be aborted, host will free the command
in handle_cmd_completion() function. But it might be still referenced by
xhci->current_cmd, which need to set NULL.
Cc: <stable@vger.kernel.org>
Signed-off-by: Baolin Wang <baolin.wang@linaro.org>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
handle_cmd_completion() frees a command structure which might be still
referenced by xhci->current_cmd.
This might cause problem when xhci->current_cmd is accessed after that.
A real-life case could be like this. The host takes a very long time to
respond to a command, and the command timer is fired at the same time
when the command completion event arrives. The command completion
handler frees xhci->current_cmd before the timer function can grab
xhci->lock. Afterward, timer function grabs the lock and go ahead with
checking and setting members of xhci->current_cmd.
Cc: <stable@vger.kernel.org> # v3.16+
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
In function xhci_mtk_probe(), variable ret takes the return value. Its
value should be negative on failures. However, when the call to function
platform_get_irq() fails, it does not set the error code, and 0 will be
returned. 0 indicates no error. As a result, the callers of function
xhci_mtk_probe() will not be able to detect the error. This patch fixes
the bug by assigning the return value of platform_get_irq() to variable
ret if it fails.
CC: <stable@vger.kernel.org>
Signed-off-by: Pan Bian <bianpan2016@163.com>
Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
xhci_setup_device() should return failure with correct error number
when xhci host has died, removed or halted.
During usb device enumeration, if usb host is not accessible (died,
removed or halted), the hc_driver->address_device() should return
a corresponding error code to usb core. But current xhci driver just
returns success. This misleads usb core to continue the enumeration
by reading the device descriptor, which will result in failure, and
users will get a misleading message like "device descriptor read/8,
error -110".
Cc: <stable@vger.kernel.org> # v4.3+
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
the tt_info provided by a HS hub might be in use to by a child device
Make sure we free the devices in the correct order.
This is needed in special cases such as when xhci controller is
reset when resuming from hibernate, and all virt_devices are freed.
Also free the virt_devices starting from max slot_id as children
more commonly have higher slot_id than parent.
CC: <stable@vger.kernel.org>
Reported-by: Guenter Roeck <groeck@chromium.org>
Tested-by: Guenter Roeck <groeck@chromium.org>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This fixes an error message that was probably copied and pasted. The same
message is used for both the in and out endpoints, so it makes it impossible
to know which one actually failed because both cases say "IN".
Make the out endpoint error message say "OUT".
Signed-off-by: David Lechner <david@lechnology.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
DCFG.DEVSPD == 0x3 is not valid and we need to set
DCFG.DEVSPD to 0x1 for full speed mode. Same goes for
DSTS.CONNECTSPD.
Old databooks had 0x3 for full speed in 48MHz mode for
USB1.1 transceivers which was never supported. Newer databooks
don't mention 0x3 at all.
Cc: John Youn <John.Youn@synopsys.com>
Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
With gcc 4.1.2:
drivers/usb/serial/f81534.c: In function ‘f81534_port_probe’:
drivers/usb/serial/f81534.c:1250: warning: comparison is always false due to limited range of data type
f81534_logic_to_phy_port() may return a negative error value, which is
ignored by assigning it to u8 f81534_port_private.phy_num.
Use an intermediate variable of type int to fix this.
While at it, forward the actual error code instead of converting it to
-ENODEV, and drop the useless check for F81534_NUM_PORT, as the callee
always returns a valid port number in case of success.
Fixes: 0c9bd6004d ("USB: serial: add Fintek F81532/534 driver")
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Intel Gemini Lake SoC has the same DWC3 than Broxton. Add
the new ID to the supported Devices.
Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
dwc2_hsotg_ep_enable can be called from interrupt context, so all
allocations should be done with GFP_ATOMIC flags. This fixes following
issue on ARM architecture:
[<c010d830>] (unwind_backtrace) from [<c010a51c>] (show_stack+0x10/0x14)
[<c010a51c>] (show_stack) from [<c032930c>] (dump_stack+0x74/0x94)
[<c032930c>] (dump_stack) from [<c011cd30>] (__warn+0xd4/0x100)
[<c011cd30>] (__warn) from [<c011cd7c>] (warn_slowpath_null+0x20/0x28)
[<c011cd7c>] (warn_slowpath_null) from [<c0187e04>] (smp_call_function_many+0xcc/0x2a4)
[<c0187e04>] (smp_call_function_many) from [<c0188014>] (on_each_cpu_mask+0x38/0xa8)
[<c0188014>] (on_each_cpu_mask) from [<c01ddfe0>] (start_isolate_page_range+0x134/0x1b8)
[<c01ddfe0>] (start_isolate_page_range) from [<c01a3c14>] (alloc_contig_range+0xac/0x2f8)
[<c01a3c14>] (alloc_contig_range) from [<c01de3e4>] (cma_alloc+0xe0/0x1a8)
[<c01de3e4>] (cma_alloc) from [<c0110acc>] (__alloc_from_contiguous+0x38/0xe0)
[<c0110acc>] (__alloc_from_contiguous) from [<c0110ba4>] (cma_allocator_alloc+0x30/0x38)
[<c0110ba4>] (cma_allocator_alloc) from [<c0111034>] (__dma_alloc+0x1c0/0x2c8)
[<c0111034>] (__dma_alloc) from [<c01111b4>] (arm_dma_alloc+0x3c/0x48)
[<c01111b4>] (arm_dma_alloc) from [<c04ad800>] (dwc2_hsotg_ep_enable+0xec/0x46c)
[<c04ad800>] (dwc2_hsotg_ep_enable) from [<c04da610>] (usb_ep_enable+0x2c/0x3c)
[<c04da610>] (usb_ep_enable) from [<c04dc0c0>] (ecm_set_alt+0xa8/0x154)
[<c04dc0c0>] (ecm_set_alt) from [<c04d678c>] (composite_setup+0xd74/0x1540)
[<c04d678c>] (composite_setup) from [<c04ae048>] (dwc2_hsotg_complete_setup+0xb8/0x370)
[<c04ae048>] (dwc2_hsotg_complete_setup) from [<c04d987c>] (usb_gadget_giveback_request+0xc/0x10)
[<c04d987c>] (usb_gadget_giveback_request) from [<c04acafc>] (dwc2_hsotg_complete_request+0x78/0x128)
[<c04acafc>] (dwc2_hsotg_complete_request) from [<c04aed28>] (dwc2_hsotg_epint+0x69c/0x81c)
[<c04aed28>] (dwc2_hsotg_epint) from [<c04af6c4>] (dwc2_hsotg_irq+0xfc/0x748)
[<c04af6c4>] (dwc2_hsotg_irq) from [<c0163264>] (__handle_irq_event_percpu+0x58/0x140)
[<c0163264>] (__handle_irq_event_percpu) from [<c0163368>] (handle_irq_event_percpu+0x1c/0x58)
[<c0163368>] (handle_irq_event_percpu) from [<c01633dc>] (handle_irq_event+0x38/0x5c)
[<c01633dc>] (handle_irq_event) from [<c01666e4>] (handle_fasteoi_irq+0xc4/0x19c)
[<c01666e4>] (handle_fasteoi_irq) from [<c0162a2c>] (generic_handle_irq+0x18/0x28)
[<c0162a2c>] (generic_handle_irq) from [<c0162b40>] (__handle_domain_irq+0x6c/0xe4)
[<c0162b40>] (__handle_domain_irq) from [<c0101470>] (gic_handle_irq+0x50/0x9c)
[<c0101470>] (gic_handle_irq) from [<c010b00c>] (__irq_svc+0x6c/0xa8)
Fixes: 5f54c54b0b ("usb: dwc2: gadget: Add DDMA chain pointers to
dwc2_hsotg_ep structure")
Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Calling platform_device_add_properties() replaces existing properties so
the "linux,sysdev_is_parent" property doesn't get set. Add this property
to each platform.
Fixes: d64ff406e5 ("usb: dwc3: use bus->sysdev for DMA configuration")
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Now races can happen between interrupt handler execution and PM runtime in
error handling code path in probe and in dwc3_omap_remove() which will lead
to system crash:
in probe:
...
err1:
pm_runtime_put_sync(dev);
^^ PM runtime can race with IRQ handler when deferred probing happening
due to extcon
pm_runtime_disable(dev);
return ret;
in dwc3_omap_remove:
...
dwc3_omap_disable_irqs(omap);
^^ IRQs are disabled in HW, but handler may still run
of_platform_depopulate(omap->dev);
pm_runtime_put_sync(&pdev->dev);
^^ PM runtime can race with IRQ handler
pm_runtime_disable(&pdev->dev);
return 0;
So, OMAP DWC3 IRQ need to be disabled before calling
pm_runtime_put() in probe and in dwc3_omap_remove().
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
The dev_config() routine in gadgetfs has a check that
dev->dev->bNumConfigurations is equal to 1, and then contains a
redundant line of code setting the value to 1. This patch removes the
unnecessary assignment.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Andrey Konovalov's fuzz testing of gadgetfs showed that we should
improve the driver's checks for valid configuration descriptors passed
in by the user. In particular, the driver needs to verify that the
wTotalLength value in the descriptor is not too short (smaller
than USB_DT_CONFIG_SIZE). And the check for whether wTotalLength is
too large has to be changed, because the driver assumes there is
always enough room remaining in the buffer to hold a device descriptor
(at least USB_DT_DEVICE_SIZE bytes).
This patch adds the additional check and fixes the existing check. It
may do a little more than strictly necessary, but one extra check
won't hurt.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
CC: Andrey Konovalov <andreyknvl@google.com>
CC: <stable@vger.kernel.org>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Andrey Konovalov reports that fuzz testing with syzkaller causes a
KASAN use-after-free bug report in gadgetfs:
BUG: KASAN: use-after-free in gadgetfs_setup+0x208a/0x20e0 at addr ffff88003dfe5bf2
Read of size 2 by task syz-executor0/22994
CPU: 3 PID: 22994 Comm: syz-executor0 Not tainted 4.9.0-rc7+ #16
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011
ffff88006df06a18 ffffffff81f96aba ffffffffe0528500 1ffff1000dbe0cd6
ffffed000dbe0cce ffff88006df068f0 0000000041b58ab3 ffffffff8598b4c8
ffffffff81f96828 1ffff1000dbe0ccd ffff88006df06708 ffff88006df06748
Call Trace:
<IRQ> [ 201.343209] [< inline >] __dump_stack lib/dump_stack.c:15
<IRQ> [ 201.343209] [<ffffffff81f96aba>] dump_stack+0x292/0x398 lib/dump_stack.c:51
[<ffffffff817e4dec>] kasan_object_err+0x1c/0x70 mm/kasan/report.c:159
[< inline >] print_address_description mm/kasan/report.c:197
[<ffffffff817e5080>] kasan_report_error+0x1f0/0x4e0 mm/kasan/report.c:286
[< inline >] kasan_report mm/kasan/report.c:306
[<ffffffff817e562a>] __asan_report_load_n_noabort+0x3a/0x40 mm/kasan/report.c:337
[< inline >] config_buf drivers/usb/gadget/legacy/inode.c:1298
[<ffffffff8322c8fa>] gadgetfs_setup+0x208a/0x20e0 drivers/usb/gadget/legacy/inode.c:1368
[<ffffffff830fdcd0>] dummy_timer+0x11f0/0x36d0 drivers/usb/gadget/udc/dummy_hcd.c:1858
[<ffffffff814807c1>] call_timer_fn+0x241/0x800 kernel/time/timer.c:1308
[< inline >] expire_timers kernel/time/timer.c:1348
[<ffffffff81482de6>] __run_timers+0xa06/0xec0 kernel/time/timer.c:1641
[<ffffffff814832c1>] run_timer_softirq+0x21/0x80 kernel/time/timer.c:1654
[<ffffffff84f4af8b>] __do_softirq+0x2fb/0xb63 kernel/softirq.c:284
The cause of the bug is subtle. The dev_config() routine gets called
twice by the fuzzer. The first time, the user data contains both a
full-speed configuration descriptor and a high-speed config
descriptor, causing dev->hs_config to be set. But it also contains an
invalid device descriptor, so the buffer containing the descriptors is
deallocated and dev_config() returns an error.
The second time dev_config() is called, the user data contains only a
full-speed config descriptor. But dev->hs_config still has the stale
pointer remaining from the first call, causing the routine to think
that there is a valid high-speed config. Later on, when the driver
dereferences the stale pointer to copy that descriptor, we get a
use-after-free access.
The fix is simple: Clear dev->hs_config if the passed-in data does not
contain a high-speed config descriptor.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Reported-by: Andrey Konovalov <andreyknvl@google.com>
Tested-by: Andrey Konovalov <andreyknvl@google.com>
CC: <stable@vger.kernel.org>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Andrey Konovalov reports that fuzz testing with syzkaller causes a
KASAN warning in gadgetfs:
BUG: KASAN: slab-out-of-bounds in dev_config+0x86f/0x1190 at addr ffff88003c47e160
Write of size 65537 by task syz-executor0/6356
CPU: 3 PID: 6356 Comm: syz-executor0 Not tainted 4.9.0-rc7+ #19
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011
ffff88003c107ad8 ffffffff81f96aba ffffffff3dc11ef0 1ffff10007820eee
ffffed0007820ee6 ffff88003dc11f00 0000000041b58ab3 ffffffff8598b4c8
ffffffff81f96828 ffffffff813fb4a0 ffff88003b6eadc0 ffff88003c107738
Call Trace:
[< inline >] __dump_stack lib/dump_stack.c:15
[<ffffffff81f96aba>] dump_stack+0x292/0x398 lib/dump_stack.c:51
[<ffffffff817e4dec>] kasan_object_err+0x1c/0x70 mm/kasan/report.c:159
[< inline >] print_address_description mm/kasan/report.c:197
[<ffffffff817e5080>] kasan_report_error+0x1f0/0x4e0 mm/kasan/report.c:286
[<ffffffff817e5705>] kasan_report+0x35/0x40 mm/kasan/report.c:306
[< inline >] check_memory_region_inline mm/kasan/kasan.c:308
[<ffffffff817e3fb9>] check_memory_region+0x139/0x190 mm/kasan/kasan.c:315
[<ffffffff817e4044>] kasan_check_write+0x14/0x20 mm/kasan/kasan.c:326
[< inline >] copy_from_user arch/x86/include/asm/uaccess.h:689
[< inline >] ep0_write drivers/usb/gadget/legacy/inode.c:1135
[<ffffffff83228caf>] dev_config+0x86f/0x1190 drivers/usb/gadget/legacy/inode.c:1759
[<ffffffff817fdd55>] __vfs_write+0x5d5/0x760 fs/read_write.c:510
[<ffffffff817ff650>] vfs_write+0x170/0x4e0 fs/read_write.c:560
[< inline >] SYSC_write fs/read_write.c:607
[<ffffffff81803a5b>] SyS_write+0xfb/0x230 fs/read_write.c:599
[<ffffffff84f47ec1>] entry_SYSCALL_64_fastpath+0x1f/0xc2
Indeed, there is a comment saying that the value of len is restricted
to a 16-bit integer, but the code doesn't actually do this.
This patch fixes the warning. It replaces the comment with a
computation that forces the amount of data copied from the user in
ep0_write() to be no larger than the wLength size for the control
transfer, which is a 16-bit quantity.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Reported-by: Andrey Konovalov <andreyknvl@google.com>
Tested-by: Andrey Konovalov <andreyknvl@google.com>
CC: <stable@vger.kernel.org>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
In case EP disabled pass only EPCPLT command
to be handled. In other case we could hit
Bug like below.
BUG: unable to handle kernel NULL pointer dereference at 0000000000000003
IP:
[<ffffffff81673428>] dwc3_thread_interrupt+0x11c8/0x1790
while dep->endpoint.desc is NULL.
Signed-off-by: Janusz Dziedzic <januszx.dziedzic@linux.intel.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Andrey Konovalov reported that we were not properly checking the upper
limit before of a device configuration size before calling
memdup_user(), which could cause some problems.
So set the upper limit to PAGE_SIZE * 4, which should be good enough for
all devices.
Reported-by: Andrey Konovalov <andreyknvl@google.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
The stop_activity() routine in dummy-hcd is supposed to unlink all
active requests for every endpoint, among other things. But it
doesn't handle ep0. As a result, fuzz testing can generate a WARNING
like the following:
WARNING: CPU: 0 PID: 4410 at drivers/usb/gadget/udc/dummy_hcd.c:672 dummy_free_request+0x153/0x170
Modules linked in:
CPU: 0 PID: 4410 Comm: syz-executor Not tainted 4.9.0-rc7+ #32
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011
ffff88006a64ed10 ffffffff81f96b8a ffffffff41b58ab3 1ffff1000d4c9d35
ffffed000d4c9d2d ffff880065f8ac00 0000000041b58ab3 ffffffff8598b510
ffffffff81f968f8 0000000041b58ab3 ffffffff859410e0 ffffffff813f0590
Call Trace:
[< inline >] __dump_stack lib/dump_stack.c:15
[<ffffffff81f96b8a>] dump_stack+0x292/0x398 lib/dump_stack.c:51
[<ffffffff812b808f>] __warn+0x19f/0x1e0 kernel/panic.c:550
[<ffffffff812b831c>] warn_slowpath_null+0x2c/0x40 kernel/panic.c:585
[<ffffffff830fcb13>] dummy_free_request+0x153/0x170 drivers/usb/gadget/udc/dummy_hcd.c:672
[<ffffffff830ed1b0>] usb_ep_free_request+0xc0/0x420 drivers/usb/gadget/udc/core.c:195
[<ffffffff83225031>] gadgetfs_unbind+0x131/0x190 drivers/usb/gadget/legacy/inode.c:1612
[<ffffffff830ebd8f>] usb_gadget_remove_driver+0x10f/0x2b0 drivers/usb/gadget/udc/core.c:1228
[<ffffffff830ec084>] usb_gadget_unregister_driver+0x154/0x240 drivers/usb/gadget/udc/core.c:1357
This patch fixes the problem by iterating over all the endpoints in
the driver's ep array instead of iterating over the gadget's ep_list,
which explicitly leaves out ep0.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Reported-by: Andrey Konovalov <andreyknvl@google.com>
CC: <stable@vger.kernel.org>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Reserved1 is documented as expected to be set to 0, but this test fails
when it it set to 0. Reverse the condition.
Signed-off-by: Vincent Pelletier <plr.vincent@gmail.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
When FUNCTIONFS_EVENTFD flag is set, __ffs_data_got_descs reads a 32bits,
little-endian value right after the fixed structure header, and passes it
to eventfd_ctx_fdget. Document this.
Also, rephrase a comment to be affirmative about the role of string
descriptor at index 0. Ref: USB 2.0 spec paragraph "9.6.7 String", and
also checked to still be current in USB 3.0 spec paragraph "9.6.9 String".
Signed-off-by: Vincent Pelletier <plr.vincent@gmail.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
By convention (according to doc) if function does not provide
get_alt() callback composite framework should assume that it has only
altsetting 0 and should respond with error if host tries to set
other one.
After commit dd4dff8b03 ("USB: composite: Fix bug: should test
set_alt function pointer before use it")
we started checking set_alt() callback instead of get_alt().
This check is useless as we check if set_alt() is set inside
usb_add_function() and fail if it's NULL.
Let's fix this check and move comment about why we check the get
method instead of set a little bit closer to prevent future false
fixes.
Fixes: dd4dff8b03 ("USB: composite: Fix bug: should test set_alt function pointer before use it")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Krzysztof Opasiak <k.opasiak@samsung.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
usb_get_dr_mode() expects the device-property to be spelled
"dr_mode" not "dr-mode".
Spelling it properly fixes the following warning showing up in dmesg:
[ 8704.500545] dwc3 dwc3.2.auto: Configuration mismatch. dr_mode forced to gadget
Signed-off-by: Hans de Goede <hdegoede@redhat.com
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Now that we're handling so many transfers at a time
and for some dwc3 revisions LPM events *must* be
enabled, we can fall into a situation where too many
events fire and we start receiving Overflow events.
Let's do what XHCI does and allocate a full page for
the Event Ring, this will avoid any future issues.
Cc: <stable@vger.kernel.org> # v4.9
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
commit 0416e494ce ("usb: dwc3: ep0: correct cache
sync issue in case of ep0_bounced") introduced a bug
where we would leak DMA resources which would cause
us to starve the system of them resulting in failing
DMA transfers.
Fix the bug by making sure that we always unmap EP0
requests since those are *always* mapped.
Fixes: 0416e494ce ("usb: dwc3: ep0: correct cache
sync issue in case of ep0_bounced")
Cc: <stable@vger.kernel.org>
Tested-by: Tomasz Medrek <tomaszx.medrek@intel.com>
Reported-by: Janusz Dziedzic <januszx.dziedzic@linux.intel.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Let's call dwc3_ep0_prepare_one_trb() explicitly
because there are occasions where we will need more
than one TRB to handle an EP0 transfer.
A follow-up patch will fix one bug related to
multiple-TRB Data Phases when it comes to
mapping/unmapping requests for DMA.
Cc: <stable@vger.kernel.org>
Reported-by: Janusz Dziedzic <januszx.dziedzic@linux.intel.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
For now this is just a cleanup patch, no functional
changes. We will be using the new function to fix a
bug introduced long ago by commit 0416e494ce
("usb: dwc3: ep0: correct cache sync issue in case
of ep0_bounced") and further worsened by commit
c0bd5456a4 ("usb: dwc3: ep0: handle non maxpacket
aligned transfers > 512")
Cc: <stable@vger.kernel.org>
Reported-by: Janusz Dziedzic <januszx.dziedzic@linux.intel.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
The current default for gadget DMA descriptor results on bcm2835 in a
unnecessary error message:
Invalid value 1 for param gadget-dma-desc
So fix this by using hw->dma_desc_enable as default value.
Fixes: dec4b55677 ("usb: dwc2: gadget: Add descriptor DMA parameter")
Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
The current defaults for DMA results on a non-DMA platform in a unnecessary
error message:
Invalid value 0 for param gadget-dma
So fix this by using dma_capable as default value.
Fixes: 9962b62f1b ("usb: dwc2: Deprecate g-use-dma binding")
Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
According to the Devicetree ePAPR [1] the datatypes u8 and u16 are
not defined. So using device_property_read_u16() would result in
a partial read of a 32-bit big-endian integer which is not intended.
So we better read the complete 32-bit value. This fixes a regression
on bcm2835 where the values for g-rx-fifo-size and g-np-tx-fifo-size
always read as zero:
Invalid value 0 for param g-rx-fifo-size
Invalid value 0 for param g-np-tx-fifo-size
[1] - http://elinux.org/images/c/cf/Power_ePAPR_APPROVED_v1.1.pdf
Fixes: 05ee799f20 ("usb: dwc2: Move gadget settings into core_params")
Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Since commit "usb: dwc2: Improve handling of host and device hwparams" the
host mode specific hardware parameter aren't initialized in peripheral mode
from the register settings anymore. So we better do not set them in this
case which avoids the following warnings on bcm2835:
256 invalid for host_nperio_tx_fifo_size. Check HW configuration.
512 invalid for host_perio_tx_fifo_size. Check HW configuration.
Fixes: 55e1040e42 ("usb: dwc2: Improve handling of host and device hwparams")
Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
ktime_set(S,N) was required for the timespec storage type and is still
useful for situations where a Seconds and Nanoseconds part of a time value
needs to be converted. For anything where the Seconds argument is 0, this
is pointless and can be replaced with a simple assignment.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
ktime is a union because the initial implementation stored the time in
scalar nanoseconds on 64 bit machine and in a endianess optimized timespec
variant for 32bit machines. The Y2038 cleanup removed the timespec variant
and switched everything to scalar nanoseconds. The union remained, but
become completely pointless.
Get rid of the union and just keep ktime_t as simple typedef of type s64.
The conversion was done with coccinelle and some manual mopping up.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
This was entirely automated, using the script by Al:
PATT='^[[:blank:]]*#[[:blank:]]*include[[:blank:]]*<asm/uaccess.h>'
sed -i -e "s!$PATT!#include <linux/uaccess.h>!" \
$(git grep -l "$PATT"|grep -v ^include/linux/uaccess.h)
to do the replacement at the end of the merge window.
Requested-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Pull scsi target cleanups from Bart Van Assche:
"The changes here are:
- a few small bug fixes for the iSCSI and user space target drivers.
- minimize the target build time by about 30% by rearranging #include
directives
- fix the second argument passed to percpu_ida_alloc()
- reduce the number of false positive warnings reported by sparse
These patches pass Wu Fengguang's build bot tests and also the
linux-next tests"
* 'scsi-target-for-v4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/bvanassche/linux:
iscsi-target: Return error if unable to add network portal
target: Fix spelling mistake and unwrap multi-line text
target/iscsi: Fix double free in lio_target_tiqn_addtpg()
target/user: Fix use-after-free of tcmu_cmds if they are expired
target: Minimize #include directives
target/user: Add an #include directive
cxgbit: Add an #include directive
ibmvscsi_tgt: Add two #include directives
sbp-target: Add an #include directive
qla2xxx: Add an #include directive
configfs: Minimize #include directives
usb: gadget: Fix second argument of percpu_ida_alloc()
sbp-target: Fix second argument of percpu_ida_alloc()
target/user: Fix a data type in tcmu_queue_cmd()
target: Use NULL instead of 0 to represent a pointer
Pull vfs updates from Al Viro:
- more ->d_init() stuff (work.dcache)
- pathname resolution cleanups (work.namei)
- a few missing iov_iter primitives - copy_from_iter_full() and
friends. Either copy the full requested amount, advance the iterator
and return true, or fail, return false and do _not_ advance the
iterator. Quite a few open-coded callers converted (and became more
readable and harder to fuck up that way) (work.iov_iter)
- several assorted patches, the big one being logfs removal
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
logfs: remove from tree
vfs: fix put_compat_statfs64() does not handle errors
namei: fold should_follow_link() with the step into not-followed link
namei: pass both WALK_GET and WALK_MORE to should_follow_link()
namei: invert WALK_PUT logics
namei: shift interpretation of LOOKUP_FOLLOW inside should_follow_link()
namei: saner calling conventions for mountpoint_last()
namei.c: get rid of user_path_parent()
switch getfrag callbacks to ..._full() primitives
make skb_add_data,{_nocache}() and skb_copy_to_page_nocache() advance only on success
[iov_iter] new primitives - copy_from_iter_full() and friends
don't open-code file_inode()
ceph: switch to use of ->d_init()
ceph: unify dentry_operations instances
lustre: switch to use of ->d_init()
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Merge tag 'pci-v4.10-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Pull PCI updates from Bjorn Helgaas:
"PCI changes:
- add support for PCI on ARM64 boxes with ACPI. We already had this
for theoretical spec-compliant hardware; now we're adding quirks
for the actual hardware (Cavium, HiSilicon, Qualcomm, X-Gene)
- add runtime PM support for hotplug ports
- enable runtime suspend for Intel UHCI that uses platform-specific
wakeup signaling
- add yet another host bridge registration interface. We hope this is
extensible enough to subsume the others
- expose device revision in sysfs for DRM
- to avoid device conflicts, make sure any VF BAR updates are done
before enabling the VF
- avoid unnecessary link retrains for ASPM
- allow INTx masking on Mellanox devices that support it
- allow access to non-standard VPD for Chelsio devices
- update Broadcom iProc support for PAXB v2, PAXC v2, inbound DMA,
etc
- update Rockchip support for max-link-speed
- add NVIDIA Tegra210 support
- add Layerscape LS1046a support
- update R-Car compatibility strings
- add Qualcomm MSM8996 support
- remove some uninformative bootup messages"
* tag 'pci-v4.10-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (115 commits)
PCI: Enable access to non-standard VPD for Chelsio devices (cxgb3)
PCI: Expand "VPD access disabled" quirk message
PCI: pciehp: Remove loading message
PCI: hotplug: Remove hotplug core message
PCI: Remove service driver load/unload messages
PCI/AER: Log AER IRQ when claiming Root Port
PCI/AER: Log errors with PCI device, not PCIe service device
PCI/AER: Remove unused version macros
PCI/PME: Log PME IRQ when claiming Root Port
PCI/PME: Drop unused support for PMEs from Root Complex Event Collectors
PCI: Move config space size macros to pci_regs.h
x86/platform/intel-mid: Constify mid_pci_platform_pm
PCI/ASPM: Don't retrain link if ASPM not possible
PCI: iproc: Skip check for legacy IRQ on PAXC buses
PCI: pciehp: Leave power indicator on when enabling already-enabled slot
PCI: pciehp: Prioritize data-link event over presence detect
PCI: rcar: Add gen3 fallback compatibility string for pcie-rcar
PCI: rcar: Use gen2 fallback compatibility last
PCI: rcar-gen2: Use gen2 fallback compatibility last
PCI: rockchip: Move the deassert of pm/aclk/pclk after phy_init()
..
Merge more updates from Andrew Morton:
- a few misc things
- kexec updates
- DMA-mapping updates to better support networking DMA operations
- IPC updates
- various MM changes to improve DAX fault handling
- lots of radix-tree changes, mainly to the test suite. All leading up
to reimplementing the IDA/IDR code to be a wrapper layer over the
radix-tree. However the final trigger-pulling patch is held off for
4.11.
* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (114 commits)
radix tree test suite: delete unused rcupdate.c
radix tree test suite: add new tag check
radix-tree: ensure counts are initialised
radix tree test suite: cache recently freed objects
radix tree test suite: add some more functionality
idr: reduce the number of bits per level from 8 to 6
rxrpc: abstract away knowledge of IDR internals
tpm: use idr_find(), not idr_find_slowpath()
idr: add ida_is_empty
radix tree test suite: check multiorder iteration
radix-tree: fix replacement for multiorder entries
radix-tree: add radix_tree_split_preload()
radix-tree: add radix_tree_split
radix-tree: add radix_tree_join
radix-tree: delete radix_tree_range_tag_if_tagged()
radix-tree: delete radix_tree_locate_item()
radix-tree: improve multiorder iterators
btrfs: fix race in btrfs_free_dummy_fs_info()
radix-tree: improve dump output
radix-tree: make radix_tree_find_next_bit more useful
...
Two of the USB Gadgets were poking around in the internals of struct ida
in order to determine if it is empty. Add the appropriate abstraction.
Link: http://lkml.kernel.org/r/1480369871-5271-63-git-send-email-mawilcox@linuxonhyperv.com
Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Acked-by: Konstantin Khlebnikov <koct9i@gmail.com>
Tested-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Ross Zwisler <ross.zwisler@linux.intel.com>
Cc: Felipe Balbi <balbi@kernel.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Michal Nazarewicz <mina86@mina86.com>
Cc: Matthew Wilcox <mawilcox@microsoft.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
from the ->drop_link method.
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Merge tag 'configfs-for-4.10' of git://git.infradead.org/users/hch/configfs
Pull configfs update from Christoph Hellwig:
"Just one simple change from Andrzej to drop the pointless return value
from the ->drop_link method"
* tag 'configfs-for-4.10' of git://git.infradead.org/users/hch/configfs:
fs: configfs: don't return anything from drop_link
Here's the tty/serial patchset for 4.10-rc1.
It's been a quiet kernel cycle for this subsystem, just a small number
of changes. A few new serial drivers, and some cleanups to the old
vgacon logic, and other minor serial driver changes as well.
All of these have been in linux-next for a while with no reported
issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'tty-4.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Pull tty/serial updates from Greg KH:
"Here's the tty/serial patchset for 4.10-rc1.
It's been a quiet kernel cycle for this subsystem, just a small number
of changes. A few new serial drivers, and some cleanups to the old
vgacon logic, and other minor serial driver changes as well.
All of these have been in linux-next for a while with no reported
issues"
* tag 'tty-4.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (54 commits)
serial: 8250_mid fix calltrace when hotplug 8250 serial controller
console: Move userspace I/O out of console_lock to fix lockdep warning
tty: nozomi: avoid sprintf buffer overflow
serial: 8250_pci: Detach low-level driver during PCI error recovery
serial: core: don't check port twice in a row
mxs-auart: count FIFO overrun errors
serial: 8250_dw: Add support for IrDA SIR mode
serial: 8250: Expose set_ldisc function
serial: 8250: Add IrDA to UART capabilities
serial: 8250_dma: power off device after TX is done
serial: 8250_port: export serial8250_rpm_{get|put}_tx()
serial: sunsu: Free memory when probe fails
serial: sunhv: Free memory when remove() is called
vt: fix Scroll Lock LED trigger name
tty: typo in comments in drivers/tty/vt/keyboard.c
tty: amba-pl011: Add earlycon support for SBSA UART
tty: nozomi: use permission-specific DEVICE_ATTR variants
tty: serial: Make the STM32 serial port depend on it's arch
serial: ifx6x60: Free memory when probe fails
serial: ioc4_serial: Free memory when kzalloc fails during probe
...
Here's the big set of USB/PHY patches for 4.10-rc1.
A number of new drivers are here in this set of changes. We have a new
USB controller type "mtu3", a new usb-serial driver, and the usual churn
in the gadget subsystem and the xhci host controller driver, along with
a few other new small drivers added. And lots of little other changes
all over the USB and PHY driver tree. Full details are in the shortlog
All of these have been in linux-next for a while with no reported
issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-4.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB/PHY updates from Greg KH:
"Here's the big set of USB/PHY patches for 4.10-rc1.
A number of new drivers are here in this set of changes. We have a new
USB controller type "mtu3", a new usb-serial driver, and the usual
churn in the gadget subsystem and the xhci host controller driver,
along with a few other new small drivers added. And lots of little
other changes all over the USB and PHY driver tree. Full details are
in the shortlog
All of these have been in linux-next for a while with no reported
issues"
* tag 'usb-4.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (309 commits)
USB: serial: option: add dlink dwm-158
USB: serial: option: add support for Telit LE922A PIDs 0x1040, 0x1041
USB: OHCI: nxp: fix code warnings
USB: OHCI: nxp: remove useless extern declaration
USB: OHCI: at91: remove useless extern declaration
usb: misc: rio500: fix result type for error message
usb: mtu3: fix U3 port link issue
usb: mtu3: enable auto switch from U3 to U2
usbip: fix warning in vhci_hcd_probe/lockdep_init_map
usb: core: usbport: Use proper LED API to fix potential crash
usbip: add missing compile time generated files to .gitignore
usb: hcd.h: construct hub class request constants from simpler constants
USB: OHCI: ohci-pxa27x: remove useless functions
USB: OHCI: omap: remove useless extern declaration
USB: OHCI: ohci-omap: remove useless functions
USB: OHCI: ohci-s3c2410: remove useless functions
USB: cdc-acm: add device id for GW Instek AFG-125
fsl/usb: Workarourd for USB erratum-A005697
usb: hub: Wait for connection to be reestablished after port reset
usbip: vudc: Refactor init_vudc_hw() to be more obvious
...
Pass a task state as second argument to percpu_ida_alloc().
Fixes: commit 71e7ae8e1f ("usb-gadget/tcm: Conversion to percpu_ida tag pre-allocation")
Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
Cc: Nicholas Bellinger <nab@linux-iscsi.org>
Cc: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: Felipe Balbi <felipe.balbi@linux.intel.com>
This patch adds support for PIDs 0x1040, 0x1041 of Telit LE922A.
Since the interface positions are the same than the ones used
for other Telit compositions, previous defined blacklists are used.
Signed-off-by: Daniele Palmas <dnlplm@gmail.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch will fix the checkpatch.pl following warnings:
WARNING: Missing a blank line after declarations
WARNING: braces {} are not necessary for single statement blocks
Signed-off-by: Manjunath Goudar <csmanjuvijay@gmail.com>
Acked-by: Vladimir Zapolskiy <vz@mleia.com>
Cc: Sylvain Lemieux <slemieux.tyco@gmail.com>
Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-usb@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Fix variable type for dev_err about usb_bulk_msg()
Signed-off-by: Kim Jae Joong <climbbb.kim@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
the issue is introduced when @is_u3_ip is used in mtu3_device_enabe()
before initialized in mtu3_mem_alloc(), so get global IP information
at first before used by following functins.
Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
inform mac2 to build U2 link automatically after U3 detect
fail without software setting soft_connect.
Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
copy_from_iter_full(), copy_from_iter_full_nocache() and
csum_and_copy_from_iter_full() - counterparts of copy_from_iter()
et.al., advancing iterator only in case of successful full copy
and returning whether it had been successful or not.
Convert some obvious users. *NOTE* - do not blindly assume that
something is a good candidate for those unless you are sure that
not advancing iov_iter in failure case is the right thing in
this case. Anything that does short read/short write kind of
stuff (or is in a loop, etc.) is unlikely to be a good one.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
The ohci_hcd_pxa27x_drv_probe function is not doing anything other
than calling usb_hcd_pxa27x_probe function so ohci_hcd_pxa27x_drv_probe
function is useless that is why removed ohci_hcd_pxa27x_drv_probe
function and renamed usb_hcd_pxa27x_probe function to
ohci_hcd_pxa27x_drv_probe for proper naming.
The ohci_hcd_pxa27x_remove function is also not doing anything other than
calling usb_hcd_pxa27x_remove that is why removed ohci_hcd_pxa27x_remove
function and renamed usb_hcd_pxa27x_remove to ohci_hcd_pxa27x_remove for
proper naming.
Signed-off-by: Manjunath Goudar <csmanjuvijay@gmail.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Cc: linux-usb@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The ohci_hcd_omap_drv_probe and ohci_hcd_omap_drv_remove
functions are removed as these are useless functions except calling
usb_hcd_omap_probe and usb_hcd_omap_remove functions.
The usb_hcd_omap_probe function renamed to ohci_hcd_omap_probe
and usb_hcd_omap_remove function renamed to ohci_hcd_omap_remove
for proper naming.
Signed-off-by: Manjunath Goudar <csmanjuvijay@gmail.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Cc: linux-usb@vger.kernel.org
Cc: linux-omap@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The ohci_hcd_s3c2410_drv_probe and ohci_hcd_s3c2410_drv_remove
functions are removed as these are useless functions except calling
usb_hcd_s3c2410_probe and usb_hcd_s3c2410_remove functions.
The usb_hcd_s3c2410_probe function renamed to ohci_hcd_s3c2410_drv_probe
and usb_hcd_s3c2410_remove function renamed to ohci_hcd_s3c2410_drv_remove
for proper naming.
Signed-off-by: Manjunath Goudar <csmanjuvijay@gmail.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Cc: Kukjin Kim <kgene@kernel.org>
Cc: Krzysztof Kozlowski <krzk@kernel.org>
Cc: Javier Martinez Canillas <javier@osg.samsung.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-samsung-soc@vger.kernel.org
Cc: linux-usb@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The EHCI specification states the following in the SUSP bit description:
In the Suspend state, the port is sensitive to resume detection.
Note that the bit status does not change until the port is suspended and
that there may be a delay in suspending a port if there is a transaction
currently in progress on the USB.
However, in NXP USBDR controller, the PORTSCx[SUSP] bit changes immediately
when the application sets it and not when the port is actually suspended.
So the application must wait for at least 10 milliseconds after a port
indicates that it is suspended, to make sure this port has entered
suspended state before initiating this port resume using the Force Port
Resume bit. This bit is for NXP controller, not EHCI compatible.
Signed-off-by: Changming Huang <jerry.huang@nxp.com>
Signed-off-by: Ramneek Mehresh <ramneek.mehresh@nxp.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
On a system with a defective USB device connected to an USB hub,
an endless sequence of port connect events was observed. The sequence
of events as observed is as follows:
- Port reports connected event (port status=USB_PORT_STAT_CONNECTION).
- Event handler debounces port and resets it by calling hub_port_reset().
- hub_port_reset() calls hub_port_wait_reset() to wait for the reset
to complete.
- The reset completes, but USB_PORT_STAT_CONNECTION is not immediately
set in the port status register.
- hub_port_wait_reset() returns -ENOTCONN.
- Port initialization sequence is aborted.
- A few milliseconds later, the port again reports a connected event,
and the sequence repeats.
This continues either forever or, randomly, stops if the connection
is already re-established when the port status is read. It results in
a high rate of udev events. This in turn destabilizes userspace since
the above sequence holds the device mutex pretty much continuously
and prevents userspace from actually reading the device status.
To prevent the problem from happening, let's wait for the connection
to be re-established after a port reset. If the device was actually
disconnected, the code will still return an error, but it will do so
only after the long reset timeout.
Cc: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Current implementation of init_vudc_hw() adds ep0 to ep_list
and then after looping through all endpoints removes it from
that list.
As this may be misleading let's refactor this function
and avoid adding and removing ep0 to eplist and place it
immediately in correct place.
In addition let's remove redundant 0 assignments as ep
array is zeroed during allocation.
Signed-off-by: Krzysztof Opasiak <k.opasiak@samsung.com>
Acked-by: Shuah Khan <shuahkh@osg.samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
ep_list inside gadget structure doesn't contain ep0.
It is stored separately in ep0 field.
This causes an urb hang if gadget driver decides to
delay setup handling. On host side this is visible as
timeout error when setting configuration.
This bug can be reproduced using for example any gadget
with mass storage function.
Fixes: abdb295743 ("usbip: vudc: Add vudc_transfer")
Signed-off-by: Krzysztof Opasiak <k.opasiak@samsung.com>
Cc: stable <stable@vger.kernel.org>
Acked-by: Shuah Khan <shuahkh@osg.samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
These updates include a new driver for Fintek F8153x devices, support
for the GPIO functionality on CP2105 devices, and improved support for
CH34X devices.
Included are also some clean ups and fixes for various minor issues.
Signed-off-by: Johan Hovold <johan@kernel.org>
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Merge tag 'usb-serial-4.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial into usb-next
Johan writes:
USB-serial updates for v4.10-rc1
These updates include a new driver for Fintek F8153x devices, support
for the GPIO functionality on CP2105 devices, and improved support for
CH34X devices.
Included are also some clean ups and fixes for various minor issues.
Signed-off-by: Johan Hovold <johan@kernel.org>
Documentation/filesystems/configfs/configfs.txt says:
"When unlink(2) is called on the symbolic link, the source item is
notified via the ->drop_link() method. Like the ->drop_item() method,
this is a void function and cannot return failure."
The ->drop_item() is indeed a void function, the ->drop_link() is
actually not. This, together with the fact that the value of ->drop_link()
is silently ignored suggests, that it is the ->drop_link() return
type that should be corrected and changed to void.
This patch changes drop_link() signature and all its users.
Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
[hch: reverted reformatting of some code]
Signed-off-by: Christoph Hellwig <hch@lst.de>
Function klsi_105_open() calls usb_control_msg() (to "enable read") and
checks its return value. When the return value is unexpected, it only
assigns the error code to the return variable retval, but does not
terminate the exception path. This patch fixes the bug by inserting
"goto err_generic_close;" when the call to usb_control_msg() fails.
Fixes: 1da177e4c3 ("Linux-2.6.12-rc2")
Signed-off-by: Pan Bian <bianpan2016@163.com>
[johan: rebase on prerequisite fix and amend commit message]
Signed-off-by: Johan Hovold <johan@kernel.org>
Kill urbs and disable read before returning from open on failure to
retrieve the line state.
Fixes: 1da177e4c3 ("Linux-2.6.12-rc2")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
The comment says function wa_nep_queue() should return 0 if ok, and <0
errno code on error. However, its implementation always returns 0, even
if the call to kzalloc() fails. As a result, the return value may be
inconsistent with the execution status, which may mislead the callers.
This patch fixes the bug, returning -ENOMEM when the call to kzalloc()
fails.
Signed-off-by: Pan Bian <bianpan2016@163.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
In function __wa_xfer_setup_segs(), variable result takes the return
value. Its value should be a negative errno on failures. Because result
may be reassigned in a loop, and its value is guaranteed to be not less
than 0 during the following repeats of the loop. So when the call to
kmalloc() or usb_alloc_urb() fails in the loop, the value of variable
result may be 0 (indicates no error), which is inconsistent with the
execution status. This patch fixes the bug, initializing variable result
with -ENOMEM in the loop.
Signed-off-by: Pan Bian <bianpan2016@163.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
In function wusb_dev_sec_add(), variable result takes the return value.
Its value should be negative on failures. When function krealloc() is
called, an earlier check of variable result guarantees that the value of
result must not be less than "sizeof(*secd)", and result is not
reassigned when krealloc() returns a NULL pointer. As a result, a
positive value may be returned, which makes it impossible for the caller
of wusb_dev_sec_add() to detect the error. This patch fixes the bug by
assigning -ENOMEM to result when krealloc() returns NULL.
Signed-off-by: Pan Bian <bianpan2016@163.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The ehci_w90x900_probe function is not doing anything other than
calling usb_w90x900_probe function so ehci_w90x900_probe function
is unuseful that is why removed ehci_w90x900_probe functions and
renamed usb_w90x900_probe function to ehci_w90x900_probe for proper
naming.
The ehci_w90x900_remove function is also not doing anything other
than calling usb_w90x900_remove that is why removed ehci_w90x900_remove
function and renamed usb_w90x900_remove to ehci_w90x900_remove for proper
naming.
This also removes warning of checkpatch.pl script.
Signed-off-by: Manjunath Goudar <csmanjuvijay@gmail.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: Wan ZongShun <mcuos.com@gmail.com>
Cc: linux-usb@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The da8xx ohci controller is not working after suspend and resume.
This is because only the root hub is being resumed.
Balance the ohci_suspend of the suspend path with an ohci_resume
in the resume path so that we resume the entire controller, and not
just the root hub.
Also, while we are here, remove setting device power_state,
as this is no longer needed and scheduled for removal
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Axel Haslam <ahaslam@baylibre.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This adds the compatible string to the ohci driver
to be able to probe from DT
Signed-off-by: Axel Haslam <ahaslam@baylibre.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Using a regulator to handle VBUS will eliminate the need for
platform data and callbacks, and make the driver more generic
allowing different types of regulators to handle VBUS.
The regulator equivalents to the platform callbacks are:
set_power -> regulator_enable/regulator_disable
get_power -> regulator_is_enabled
get_oci -> regulator_get_error_flags
ocic_notify -> regulator event notification
Signed-off-by: Axel Haslam <ahaslam@baylibre.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To migrate to a DT based boot, we will remove the use of platform
callbacks, in favor of using the regulator framework to handle
vbus and over current.
In preparation to use a regulator instead of callbacks, move the platform
data callbacks into separate functions. This provides well defined place
to for the regulator API to coexist with the platform callbacks before
all users are converted.
Signed-off-by: Axel Haslam <ahaslam@baylibre.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Instead of global variables, use the extra_priv_size of
the ohci driver.
We cannot yet move the ocic mask because this is used on
the interrupt handler which is registered through platform
data and does not have an hcd pointer. This will be moved
on a later patch.
Tested-by: David Lechner <david@lechnology.com>
Signed-off-by: Axel Haslam <ahaslam@baylibre.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
- Properly mark little endian descriptors for udc
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Merge tag 'usb-ci-v4.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/peter.chen/usb into usb-next
Peter writes:
- Adding ULPI PHY support for imx53
- Properly mark little endian descriptors for udc
udplite conflict is resolved by taking what 'net-next' did
which removed the backlog receive method assignment, since
it is no longer necessary.
Two entries were added to the non-priv ethtool operations
switch statement, one in 'net' and one in 'net-next, so
simple overlapping changes.
Signed-off-by: David S. Miller <davem@davemloft.net>
The davinci ohci driver name (currently "ohci") is too generic.
To be consistent with other usb dirvers, append the "-da8xx" postfix
to the name.
Signed-off-by: Axel Haslam <ahaslam@baylibre.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The DA8xx OTG PHY has some issues when it is forced in host or
peripheral mode. Actually, most of the time, OTG is the best mode
because host or peripheral mode are only required for hardware that
miss some circuitry.
Init the PHY mode OTG mode by default.
Signed-off-by: Alexandre Bailon <abailon@baylibre.com>
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The first attempt to read a register may fail because the clock may not
be enabled, and then the probe of musb driver will fail.
Call clk_prepare_enable() before the first register read.
Signed-off-by: Alexandre Bailon <abailon@baylibre.com>
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This adds DT support for TI DA8xx/OMAP-L1x/AM17xx/AM18xx MUSB driver
Signed-off-by: Petr Kulhavy <petr@barix.com>
Signed-off-by: Alexandre Bailon <abailon@baylibre.com>
Tested-by: David Lechner <david@lechnology.com>
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This adds the function musb_get_mode() to get the DT property "dr_mode"
Signed-off-by: Petr Kulhavy <petr@barix.com>
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Alexandre Bailon <abailon@baylibre.com>
Tested-by: David Lechner <david@lechnology.com>
Reviewed-by: Kevin Hilman <khilman@baylibre.com>
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
There is no point having this complaint to be dev_err as it is just adding
noise to bootlog.
Signed-off-by: Ladislav Michl <ladis@linux-mips.org>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Replace pr_err with dev_err to print also device name.
Signed-off-by: Ladislav Michl <ladis@linux-mips.org>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Don't complain on -EPROBE_DEFER when initializing controller,
the driver probe will be retried later.
Signed-off-by: Ladislav Michl <ladis@linux-mips.org>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The sunxi musb has a bug where sometimes it will generate a babble
error on device disconnect instead of a disconnect irq. When this
happens the musb-controller switches from host mode to device mode
(it clears MUSB_DEVCTL_SESSION and sets MUSB_DEVCTL_BDEVICE) and
gets stuck in this state.
Clearing this requires reporting Vbus low for 200 or more ms, but
on some devices Vbus is simply always high (host-only mode, no Vbus
control).
This commit adds a sunxi_musb_recover() callback which makes
sunxi_musb_work call phy_set_mode with the current mode, which
will force end the current session.
This fixes the musb controller getting stuck in this state on systems
without Vbus control; and also fixes the need to unplug the usb-b ->
usb-a cable to get out of this state on systems with Vbus control.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The musb core already handles babble interrupts, so the sunxi glue
having its own custom handling is redundant.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Remove comments about resume signalling being stopped from
GetPortStatus, something which is no longer the case.
Fixes: 8ed1fb790e ("usb: musb: finish suspend/reset work...")
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
We should use new API dma_pool_zalloc instead of dma_pool_alloc/memset.
Signed-off-by: Shashi Bhusan <shashibhushan4u123@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
On sparc32, tcflag_t is unsigned long, unlike all other architectures:
drivers/usb/serial/cp210x.c: In function 'cp210x_get_termios':
drivers/usb/serial/cp210x.c:717:3: warning: passing argument 2 of 'cp210x_get_termios_port' from incompatible pointer type
cp210x_get_termios_port(tty->driver_data,
^
drivers/usb/serial/cp210x.c:35:13: note: expected 'unsigned int *' but argument is of type 'tcflag_t *'
static void cp210x_get_termios_port(struct usb_serial_port *port,
^
Consistently use tcflag_t to fix this.
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Read urbs are submitted back only on success, causing read pipe
running out of urbs after few errors. No more characters can
be read from tty device then until it is reopened and no errors
are reported.
Fix that by always submitting urbs back and clearing stall on
-EPIPE.
Signed-off-by: Ladislav Michl <ladis@linux-mips.org>
Acked-by: Oliver Neukum <oneukum@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
is_int_ep is used only in acm_probe, no need to store it in device data.
Signed-off-by: Ladislav Michl <ladis@linux-mips.org>
Acked-by: Oliver Neukum <oneukum@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Clearing stall needs pipe descriptor, store it in acm structure.
Signed-off-by: Ladislav Michl <ladis@linux-mips.org>
Acked-by: Oliver Neukum <oneukum@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Move urb killing code into separate function and use it
instead of copying that code pattern over.
Signed-off-by: Ladislav Michl <ladis@linux-mips.org>
Acked-by: Oliver Neukum <oneukum@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Pointer to usb_device is already stored in acm structure.
Signed-off-by: Ladislav Michl <ladis@linux-mips.org>
Acked-by: Oliver Neukum <oneukum@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Use only one tab to indent dev_{(v)dbg,err} parameters.
Signed-off-by: Ladislav Michl <ladis@linux-mips.org>
Acked-by: Oliver Neukum <oneukum@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
One big merge this time with a total of 166 non-merge commits.
Most of the work, by far, is on dwc2 this time (68.2%) with dwc3 a far
second (22.5%). The remaining 9.3% are scattered on gadget drivers.
The most important changes for dwc2 are the peripheral side DMA support
implemented by Synopsys folks and support for the new IOT dwc2
compatible core from Synopsys.
In dwc3 land we have support for high-bandwidth, high-speed isochronous
endpoints and some non-critical fixes for large scatter lists.
Apart from these, we have our usual set of cleanups, non-critical fixes,
etc.
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Merge tag 'usb-for-v4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-next
Felipe writes:
usb: patches for v4.10 merge window
One big merge this time with a total of 166 non-merge commits.
Most of the work, by far, is on dwc2 this time (68.2%) with dwc3 a far
second (22.5%). The remaining 9.3% are scattered on gadget drivers.
The most important changes for dwc2 are the peripheral side DMA support
implemented by Synopsys folks and support for the new IOT dwc2
compatible core from Synopsys.
In dwc3 land we have support for high-bandwidth, high-speed isochronous
endpoints and some non-critical fixes for large scatter lists.
Apart from these, we have our usual set of cleanups, non-critical fixes,
etc.
Here are a couple of new device ids.
Signed-off-by: Johan Hovold <johan@kernel.org>
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Merge tag 'usb-serial-4.9-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial into usb-linus
Johan writes:
USB-serial fixes for v4.9-rc6
Here are a couple of new device ids.
Signed-off-by: Johan Hovold <johan@kernel.org>
One single fix for FunctionFS to make sure we're checking
ffs_func_req_match()'s return code correctly.
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Merge tag 'fixes-for-v4.9-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-linus
Felipe writes:
usb: fixes for v4.9-rc5
One single fix for FunctionFS to make sure we're checking
ffs_func_req_match()'s return code correctly.
The dma mask is correctly set up by the DT probe function, no
need to override it any more.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Sriram Dash <sriram.dash@nxp.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
The dma ops for dwc3 devices are not set properly. So, use a
physical device sysdev, which will be inherited from parent,
to set the hardware / firmware parameters like dma.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Sriram Dash <sriram.dash@nxp.com>
Tested-by: Baolin Wang <baolin.wang@linaro.org>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Building with W=1, we get a warning about harmless empty statements:
drivers/usb/dwc3/ep0.c: In function 'dwc3_ep0_handle_intf':
drivers/usb/dwc3/ep0.c:491:4: error: suggest braces around empty body in an 'if' statement [-Werror=empty-body]
Instead of adding empty braces which would introduce checkpatch.pl
warnings, we're just removing the code which doesn't do anything and
making sure we return 0 so USBCV tool is happy.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Removed extern specifier from dwc2_host_start(), dwc2_host_disconnect()
and dwc2_host_hub_info() functions. Moved those functions from header
to source. Then make them static.
Signed-off-by: Razmik Karapetyan <razmik@synopsys.com>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
NPTXFIFO's start address is showing 0x03000000 instead of 0x00000800.
Replaced val & FIFOSIZE_DEPTH_MASK by val & FIFOSIZE_STARTADDR_MASK in
fifo_show() function.
Signed-off-by: Razmik Karapetyan <razmik@synopsys.com>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Remove request length checking from dwc2_hsotg_unmap_dma() and
dwc2_hsotg_map_dma(). That checking is done in functions called from
those functions, usb_gadget_unmap_request_by_dev() and
usb_gadget_map_request_by_dev() respectively, so it's unnecessary.
Signed-off-by: Razmik Karapetyan <razmik@synopsys.com>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
While sending zlp for DWC2_EP0_STATUS_IN EP direction was changed to IN.
Change it back to complete OUT transfer request.
This affects only on DMA mode, because DMA buffer map/unmap function is
direction sensitive.
Signed-off-by: Razmik Karapetyan <razmik@synopsys.com>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Check the request length in dwc2_hsotg_start_req() function. If
length == 0, do not write DMA address to control register.
Signed-off-by: Razmik Karapetyan <razmik@synopsys.com>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Stop sending complete split requests in case of ISOC IN split transfers
after getting data with PID0. Otherwise we will get a NYET for each
additional IN token.
Signed-off-by: Sevak Arakelyan <sevaka@synopsys.com>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
dwc3_pci_dsm() is only needed if (PM || PM_SLEEP),
we should make sure it's not defined if neither of
those is defined.
This fixes a randconfig build warning.
Acked-by: Arnd Bergmann <arnd@arndb.de>
Reported-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
This is a workaround for STAR 9000961433 which affects only version
3.00a of the DWC_usb3 core. This prevents the controller interrupt from
being masked while handling events. Enabling interrupt moderation allows
us to work around this issue because once the GEVNTCOUNT.count is
written the IRQ is immediately deasserted and won't be asserted again
until GEVNTCOUNT.EHB is cleared.
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Implement interrupt moderation which allows the interrupt rate to be
throttled. To enable this feature the dwc->imod_interval must be set to
1 or greater. This value specifies the minimum inter-interrupt interval,
in 250 ns increments. A value of 0 disables interrupt moderation.
This applies for DWC_usb3 version 3.00a and higher and for DWC_usb31
version 1.20a and higher.
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
This patch adds support for the "amcc,usb-otg" device
which is found in the PowerPC Canyonlands' dts.
The device definition was added by:
commit c89b3458d8 ("powerpc/44x: Add USB DWC DTS entry to Canyonlands
board")
but without any driver support as the dwc2 driver wasn't available at
that time.
Note: The system can't use the generic "snps,dwc2" compatible
because of the special ahbcfg configuration. The default
GAHBCFG_HBSTLEN_INCR4 of snps,dwc2 can cause a system hang
when the USB and SATA is used concurrently.
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
This patch moves the the host_dma initialization
before dwc2_set_param_dma_desc_enable() and
dwc2_set_param_dma_desc_fs_enable(). The reason being
that both function need it.
Fixes: 1205489cee75bf39 ("usb: dwc2: Get host DMA device properties")
Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Added new core param for low speed, which can be used only when SNPSID
is equal to DWC2_CORE_FS_IOT. When LS mode is enabled, we are
restricting ep types and providing to upper layer only INTR and CTRL
endpoints.
Signed-off-by: Vardan Mikayelyan <mvardan@synopsys.com>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
When device is enumerated in LS we should program ep0_mps accordingly.
USB2 spec says that in LS mode, control ep mps must be 8.
Signed-off-by: Vardan Mikayelyan <mvardan@synopsys.com>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Add new device IDs for IOT gadget. Done changes in probe to
configure core accordingly depending on device ID value.
Signed-off-by: Vardan Mikayelyan <mvardan@synopsys.com>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Do modifications in dwc2_hsotg_core_init_disconnected() function to
enable USB 1.1 Full-Speed Serial Transceiver Select in GUSBCFG register
if corresponding speed and PHY types are chosen. Adjust device speed
selection in DCFG register as well.
Signed-off-by: Vahram Aharonyan <vahrama@synopsys.com>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Check if endpoint is enabled during dwc2_hsotg_ep_disable() function
processing and call dwc2_hsotg_ep_stop_xfr() to disable it and flush
associated FIFO.
Move dwc2_hsotg_ep_stop_xfr() and dwc2_hsotg_wait_bit_set() functions
upper before dwc2_hsotg_ep_enable and dwc2_hsotg_ep_disable function
definitions.
Signed-off-by: Vahram Aharonyan <vahrama@synopsys.com>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Correct dwc2_hsotg_ep_stop_xfr() function to follow dwc2 programming
guide for setting NAK on specific endpoint, disabling it and flushing
corresponding FIFO.
Current code does not take into account whether core acts in shared or
dedicated FIFO mode, current endpoint is periodic or not. It does not
clear EPDISBLD interrupt after programming of DXEPCTL_EPDIS, does not
flush shared TX FIFO and tries to clear global out NAK in wrong manner
instead of setting DCTL_CGOUTNAK.
Signed-off-by: Vahram Aharonyan <vahrama@synopsys.com>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Tests with various hosts show that depend on time difference between
host sending SETUP packet and IN/OUT token SW could get Xfercomplete
interrupt without SetUp interrupt. On the other hand, SW should parse
received SETUP packet only after ensuring that Host has moved to either
Data or Status stage of control transfer.
For this purpose added checking in the dwc2_hsotg_epint() function to
not handle xfercomplete and postpone SETUP packet analysis till SW's
getting of setup phase done interrupt.
Signed-off-by: Vahram Aharonyan <vahrama@synopsys.com>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
In DDMA mode if programmed ISOC OUT transfer length is not DWORD
aligned, after closing descriptor HW leaves value of 4 - (ureq->length %
4) in the RX bytes. This is caused because DMA works using 4B chunks.
Example: if length = 9 and all 9 bytes were received from the bus, after
xfercomplete rx_bytes value is 3. Hence add this value to the amount of
transferred bytes.
Signed-off-by: Vahram Aharonyan <vahrama@synopsys.com>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Enable the BNA (Buffer Not Available) interrupt in descriptor DMA mode.
Signed-off-by: Vahram Aharonyan <vahrama@synopsys.com>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
For DDMA mode in case of isochronous transfers completion performed
differently than other transfer types. This is because each usb request
was mapped to one descriptor in the chain and SW gets xfercomplete
interrupt on all descriptors. The endpoint remains enabled until HW
processes last descriptor with "L" bit set or BNA interrupt gets
asserted for IN and OUT endpoints correspondingly.
Add function dwc2_gadget_complete_isoc_request_ddma() - completes one
isochronous request taken from endpoint's queue.
Add function dwc2_gadget_start_next_isoc_ddma() - tries to restart
isochronous endpoint if requests are pending. Check for EPENA. If the
endpoint was disabled, try to restart it after programming descriptor
chain prepared by SW earlier, switch SW to fill the other half of chain.
Add function dwc2_gadget_fill_isoc_desc() - initializes DMA descriptor
for isochronous transfer based on the received request data and endpoint
characteristics.
Added function dwc2_gadget_start_isoc_ddma() - prepare DMA chain for
isochronous transfer in DDMA, programs corresponding DMA address to
DEPDMA, enables the endpoint. This function is called once SW decides to
start isochronous IN or OUT transfer depend on reception of NAK or
OUTTknEPdis interrupts indicating first isochronous token arrival from
host.
Signed-off-by: Vahram Aharonyan <vahrama@synopsys.com>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
In DDMA mode incompISOOUT should be masked, similar as Bulk Out -
XferCompl and BNA should be handled. incompISOIN is not valid in DDMA
and is not getting asserted.
Signed-off-by: Vahram Aharonyan <vahrama@synopsys.com>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Preparing for isochronous transfers support adding in DDMA mode. In DDMA
isochronous transfers are handled differently compared to Slave and BDMA
modes. This is caused by fact that isoc requests contain data for one
frame/microframe. HW descriptor should contain data of one
frame/microframe as well. Hence each DMA descriptor in the chain will
correspond to one usb request.
Decided to divide endpoints descriptor chain to two halves - while one
will be processed by HW, other one will be under SW control. First part
will be passed to HW once ISOC traffic needs to be started. In parallel
to HW's work SW will keep creating new entries in the other half of
chain if new requests arrive in ep_queue routine. This will allow
passing of already pre-prepared descriptors to HW immediately after
endpoint gets disabled. The endpoint should be disabled once HW closes
descriptor with "L" bit set. Afterwards SW will switch to use first part
of chain if more requests are arriving.
Add two members to the dwc2_hsotg_ep structure to be used in isochronous
transfers' handling in DDMA mode:
-isoc_chain_num - indicates which half of EP descriptor chain can be
used by SW to add new queued requests while HW is
processing other half.
-next_desc - index which points to next not yet programmed descriptor in
the half of descriptor chain which is under SW control.
Also add initialization of these fields in function
dwc2_hsotg_ep_enable().
Signed-off-by: Vahram Aharonyan <vahrama@synopsys.com>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Add DCFG register field macro for descriptor DMA mode and update core
initialization routine to set that bit accordingly.
Signed-off-by: Vahram Aharonyan <vahrama@synopsys.com>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
In DDMA mode of operation IN status phase of control write transfer
should start after getting StsPhseRcvd interrupt. This interrupt is
issued by HW once host starts to send IN tokens after data stage.
Signed-off-by: Vahram Aharonyan <vahrama@synopsys.com>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
The StsPhseRcvd interrupt should not be enabled in slave mode.
Also move the StsPhsRcvd interrupt checking in the endpoint interrupt
handler to the correct order according to the databook. The interrupt
itself will be implemented in a later commit.
Signed-off-by: Vahram Aharonyan <vahrama@synopsys.com>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Update transfer starting dwc2_hsotg_start_req() routine with call of
function dwc2_gadget_config_nonisoc_xfer_ddma() to fill descriptor
chain.
Add call of dwc2_gadget_get_xfersize_ddma() in
dwc2_hsotg_handle_outdone() and dwc2_hsotg_complete_in() interrupt
handlers for DDMA mode to get information on transferred data from
descriptors instead of DXEPTSIZ.
Signed-off-by: Vahram Aharonyan <vahrama@synopsys.com>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Add dwc2_gadget_set_ep0_desc_chain() function to switch between EP0 DDMA
chains depend on the stage of control transfer.
Include EP0 DDMA chain selection during ep_queue called from
dwc2_hsotg_enqueue_setup() for setup stage. Selecting and filling DDMA
chain for status phase as well - add calls of
dwc2_gadget_set_ep0_desc_chain() and
dwc2_gadget_config_nonisoc_xfer_ddma() functions.
Signed-off-by: Vahram Aharonyan <vahrama@synopsys.com>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
This property was mistakenly added, then removed, so don't read it in.
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
All users are DT-only and it makes no sense to keep
unused code
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Nicolae Rosia <Nicolae_Rosia@mentor.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Now that all the infrastructure is in place, we can
clear events in the top-half handler in order to
bring IRQ line low ASAP.
This is also a necessary step in order to implement
workaround for known erratum in follow-up patches.
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Let's start copying events from evt->buf to
evt->cache and use evt->cache for processing events.
A follow-up patch will be added to clear events in
the top-half handler in order to bring IRQ line low
as soon as possible.
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Instead of always accessing the macro directly,
let's rely on evt->length which is the actual length
of current event buffer. While unlikely, we could
change event buffer's size at any time.
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
This extra buffer will be used so we can copy
triggered events from our event buffer to this cache
and process all of them later in bottom half
handler.
We need this in order to implement a workaround for
a known erratum in recent DWC3 release.
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Add clock operation at .set_suspend if the PHY has
suspend requirement, it can be benefit of power saving for
phy and the whole system (parent clock may also be disabled).
Signed-off-by: Peter Chen <peter.chen@nxp.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
dwc3_soft_reset() is doing the same thing as
dwc3_core_soft_reset(). Let's remove
dwc3_soft_reset() since that's not needed anymore.
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Fix error message by checkpath.pl
open brace '{' following struct/enum go on the same line
Patch applied by running fix inplace capability of checkpatch:
checkpatch.pl -f *.[ch] --types OPEN_BRACE --fix-inplace
Signed-off-by: Anson Jacob <ansonjacob.aj@gmail.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
We have a macro which does the same trick. Let's
use it.
Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Since usb_endpoint_maxp now returns only lower 11 bits mult
calculation here isn't correct anymore and that breaks webcam
for me. Patch make use of usb_endpoint_maxp_mult instead of
direct calculation.
Fixes: abb621844f ("usb: ch9: make usb_endpoint_maxp() return
only packet size")
Signed-off-by: Mike Krinkin <krinkin.m.u@gmail.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Add a function to check properties and call it from probe. This will
allow us to add check code without bloating the probe function. This
needs to be done after dwc3_get_properties() and dwc3_core_init() so
that all the properties and hardware configs are available.
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Add a helper function to check if we are running on a DWC_usb3 core.
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Add DMA descriptor members to the dwc2_hsotg_ep structure.
Signed-off-by: Vahram Aharonyan <vahrama@synopsys.com>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Add dwc2_gadget_get_chain_limit() function and its call in transfer
start routine to correctly estimate one go on transfer size if
descriptor DMA mode is selected.
Signed-off-by: Vahram Aharonyan <vahrama@synopsys.com>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Rename MAX_DMA_DESC_SIZE to HOST_DMA_NBYTES_LIMIT as it stores value of
host DMA descriptor transfer bytes' limit. Values are different in case
of gadget DMA descriptors.
Signed-off-by: Vahram Aharonyan <vahrama@synopsys.com>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Update dwc2_hsotg structure to add descriptor chains for EP 0: two DMA
descriptors for Setup phase, per one for IN/OUT data and status phases.
Add their allocation function dwc2_gadget_alloc_ctrl_desc_chains() and
its call during gadget probe.
Signed-off-by: Vahram Aharonyan <vahrama@synopsys.com>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Add device mode DMA transfer descriptor status quadlet field notations.
Signed-off-by: Vahram Aharonyan <vahrama@synopsys.com>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Add a parameter for descriptor DMA and set it based on hardware
capabilities. This won't actually be used by the gadget until later,
when the descriptor DMA code is in place.
Signed-off-by: Vahram Aharonyan <vahrama@synopsys.com>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Make the DMA descriptor structure packed to guarantee alignment and size
in memory.
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Rename DMA descriptor structure from dwc2_hcd_dma_desc to dwc2_dma_desc
as it is applies to both host and gadget.
Signed-off-by: Vahram Aharonyan <vahrama@synopsys.com>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
This is not needed as the gadget now fully supports DMA and it can
autodetect it. This was initially added because gadget DMA mode was only
partially implemented so could not be automatically enabled.
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
The register programming code in dwc2_updated_ram_clk_sel() will never
be executed. And in fact the entire function can be removed as there is
no way to override the default value of GCTL.RAMCLKSEL. Remove the
function and add a comment explaining where GCTL.RAMCLKSEL should be
programmed if needed in the future.
This fixes dead code warnings in coverity.
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
This fixes the coverity issues related to unreachable code with
debugging off.
Signed-off-by: Vardan Mikayelyan <mvardan@synopsys.com>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Because usb_pipetype() masks urb->pipe, the default case can never be
hit. Remove it. This cleans up a coverity warning.
Signed-off-by: Vardan Mikayelyan <mvardan@synopsys.com>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
The __dwc3_gadget_endpoint_enable() function has access to the endpoint
descriptors via the usb_ep. So we don't need to pass them in as
arguments. The descriptors should be set by the caller prior to calling
usb_ep_enable().
Signed-off-by: John Youn <johnyoun@synopsys.com>
[felipe.balbi@linux.intel.com : minor improvements]
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Update the dwc2 driver for the new behavior of the usb_endpoint_maxp()
and also use the new usb_endpoint_maxp_mult() helper function.
This commit fixes failures in high-badwith ISOC transfer tests.
Signed-off-by: Vardan Mikayelyan <mvardan@synopsys.com>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Seems last time we hit few issues where
we get trb_left = 0, mainly because of
HWO bit still set in previous TRB.
Add warn on once to catch/fix such
problems much faster.
Signed-off-by: Janusz Dziedzic <januszx.dziedzic@linux.intel.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
After we kick_transfer we should clean
DWC3_EP_PENDING_REQUEST endpoint flag.
Signed-off-by: Janusz Dziedzic <januszx.dziedzic@linux.intel.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Use pre-increment and set -ETIMEDOUT correctly.
Signed-off-by: Janusz Dziedzic <januszx.dziedzic@linux.intel.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
In case STARTTRANSFER will fail, clean TRB.
Seems HW in such case don't clean HWO bit.
So, without this cleanup prev_trb still have
HWO bit set.
In my case (without patch), after first START failed:
- dep->enqueue == 1
- dep->dequeue == 1
- prev_trb still have HWO set
- left_trb() == 0
No way to send more data.
Signed-off-by: Janusz Dziedzic <januszx.dziedzic@linux.intel.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
In case we will fail to STARTTRANSFER we should
also decrement queued_requests.
Signed-off-by: Janusz Dziedzic <januszx.dziedzic@linux.intel.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Add device parameters handling in dwc2-pci similar what is done in dwc3.
Signed-off-by: Vahram Aharonyan <vahrama@synopsys.com>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
The driver will automatically enable host DMA and use it if available.
This is consistent with the behavior of all existing platforms.
Read in the "snps,host-dma-disable" device property to disable it.
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Rename it so that it is more consistent with the gadget dma parameter.
It only affects host-mode operation so prefix it with "host".
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Move the gadget devicetree settings into the core_params structure and
document them. Then set and check them in params.c, with the addition of
some helper functions, and remove the equivalent code in gadget.c.
Because these parameters came from the standalone s3c driver, they have
a fixed default value rather than an autodetected one. Preserve and
document this behavior to avoid any compatibility issues.
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
This hardware parameter is not host specific. It also applies to device
mode. Drop the "host" from the name to make that clear.
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Remove the unnecessary prototypes for all the parameter setting
functions and declare those functions 'static' in the params.c file.
Also remove the duplicate documentation that went along with them. They
are already documented as part of the params structure definition.
Then move the constants that went along with the prototype into the
structure.
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Replace this by statically defining a function with defaults, and just
assigning it. This will allow us to use parameters of any type and any
default value.
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Consolidate and move all the parameter initialization code from the
probe function to params.c.
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
This makes it consistent with the hw_params struct and simplifies the
memory management for future refactoring. Fix up usage in all files.
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Add a params.c file and move all driver parameter code there, including
all the static parameter definitions.
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
The dma_desc_fs_enable does not correspond to any hardware parameter and
is unused. Remove it.
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
This shouldn't be freed by the HCD as it is owned by the core and
allocated with devm_kzalloc.
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Make sure to drop the references taken by of_parse_phandle() and
bus_find_device() before returning from am335x_get_phy_control().
Note that there is no guarantee that the devres-managed struct
phy_control will be valid for the lifetime of the sibling phy device
regardless of this change.
Fixes: 3bb869c8b3 ("usb: phy: Add AM335x PHY driver")
Acked-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Properly check the return code of ffs_func_revmap_intf() and
ffs_func_revmap_ep() for a non-negative value.
Instead of checking the return code, the comparison was performed for the last
parameter of the function calls, because of wrong parenthesis.
This also fixes the following static checker warning:
drivers/usb/gadget/function/f_fs.c:3152 ffs_func_req_match()
warn: always true condition '(((creq->wIndex)) >= 0) => (0-u16max >= 0)'
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Felix Hädicke <felixhaedicke@web.de>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
USB-3 does not have any link state that will avoid negotiating a connection
with a plugged-in cable but will signal the host when the cable is
unplugged.
For USB-3 we used to first set the link to Disabled, then to RxDdetect to
be able to detect cable connects or disconnects. But in RxDetect the
connected device is detected again and eventually enabled.
Instead set the link into U3 and disable remote wakeups for the device.
This is what Windows does, and what Alan Stern suggested.
Cc: stable@vger.kernel.org
Cc: Alan Stern <stern@rowland.harvard.edu>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This already gets done automatically by PM runtime and we have
a separate autosuspend timeout in musb_core.c.
Reviewed-by: Johan Hovold <johan@kernel.org>
Tested-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
We are missing pm_runtime_disable() in 2430 glue layer. Further,
we only need to enable PM runtime and disable it on exit. With
musb_core.c doing PM, the glue layer as a parent will always be
active when musb_core.c is active.
This fixes host enumeration issues with some devices as reported
by Ladislav Michl <ladis@linux-mips.org>.
And holding an RPM reference while deregistering the child would
lead to a crash in omap2430_runtime_suspend() which dereferences
the now freed child's driver data on put as pointed out by
Johan Hovold <johan@kernel.org>:
Unable to handle kernel paging request at virtual address 6b6b6f17
...
[<c05453d4>] (omap2430_runtime_suspend) from [<c0481410>]
(pm_generic_runtime_suspend+0x3c/0x48)
[<c0481410>] (pm_generic_runtime_suspend) from [<c0121028>]
(_od_runtime_suspend+0x1c/0x30)
[<c0121028>] (_od_runtime_suspend) from [<c04833b0>] (__rpm_callback+0x3c/0x70)
[<c04833b0>] (__rpm_callback) from [<c0483414>] (rpm_callback+0x30/0x90)
[<c0483414>] (rpm_callback) from [<c0483984>] (rpm_suspend+0x118/0x6b4)
[<c0483984>] (rpm_suspend) from [<c04840f4>] (rpm_idle+0x104/0x440)
[<c04840f4>] (rpm_idle) from [<c04844ac>] (__pm_runtime_idle+0x7c/0xb0)
[<c04844ac>] (__pm_runtime_idle) from [<c0545458>] (omap2430_remove+0x38/0x58)
[<c0545458>] (omap2430_remove) from [<c047b2bc>] (platform_drv_remove+0x34/0x4c)
Note that if changes are needed to the autosuspend timeout, it should
be done in musb_core.c.
Reported-by: Ladislav Michl <ladis@linux-mips.org>
Fixes: 87326e8584 ("usb: musb: Remove extra PM runtime calls from
2430 glue layer")
Tested-by: Ladislav Michl <ladis@linux-mips.org>
Reviewed-by: Johan Hovold <johan@kernel.org>
Tested-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
With a USB hub disconnected, devctl can be 0x19 for about a second
on am335x and will stay forever on at least omap3. And we get no
further interrupts when devctl session bit clears. This keeps
PM runtime active.
Let's fix the issue by polling devctl until the session bit clears
or times out. We can do this by making musb->irq_work into
delayed_work.
And with the polling implemented, we can now also have the quirk
for invalid VBUS it to avoid disconnecting too early while VBUS
is ramping up.
Fixes: 467d5c9807 ("usb: musb: Implement session bit based runtime
PM for musb-core")
Fixes: 65b3f50ed6 ("usb: musb: Add PM runtime support for MUSB DSPS
Tested-by: Ladislav Michl <ladis@linux-mips.org>
Tested-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Commit 65b3f50ed6 ("usb: musb: Add PM runtime support for MUSB DSPS
glue layer") wrongly added a call for pm_runtime_get_sync to otg_timer
that runs in softirq context. That causes a "BUG: sleeping function called
from invalid context" every time when polling the cable status:
[<c015ebb4>] (__might_sleep) from [<c0413d60>] (__pm_runtime_resume+0x9c/0xa0)
[<c0413d60>] (__pm_runtime_resume) from [<c04d0bc4>] (otg_timer+0x3c/0x254)
[<c04d0bc4>] (otg_timer) from [<c0191180>] (call_timer_fn+0xfc/0x41c)
[<c0191180>] (call_timer_fn) from [<c01915c0>] (expire_timers+0x120/0x210)
[<c01915c0>] (expire_timers) from [<c0191acc>] (run_timer_softirq+0xa4/0xdc)
[<c0191acc>] (run_timer_softirq) from [<c010168c>] (__do_softirq+0x12c/0x594)
I did not notice that as I did not have CONFIG_DEBUG_ATOMIC_SLEEP enabled.
And looks like also musb_gadget_queue() suffers from the same problem.
Let's fix the issue by using a list of delayed work then call it on
resume. Note that we want to do this only when musb core and it's
parent devices are awake, and we need to make sure the DSPS glue
timer is stopped as noted by Johan Hovold <johan@kernel.org>.
Note that we already are re-enabling the timer with mod_timer() in
dsps_musb_enable().
Later on we may be able to remove other delayed work in the musb driver
and just do it from pending_resume_work. But this should be done only
for delayed work that does not have other timing requirements beyond
just being run on resume.
Fixes: 65b3f50ed6 ("usb: musb: Add PM runtime support for MUSB DSPS
glue layer")
Reported-by: Johan Hovold <johan@kernel.org>
Reviewed-by: Johan Hovold <johan@kernel.org>
Tested-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
We can't use static variable first for checking when musb is
initialized when we have multiple musb instances like on am335x.
Tested-by: Ladislav Michl <ladis@linux-mips.org>
Reviewed-by: Johan Hovold <johan@hovoldconsulting.com>
Tested-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The BRIM Brothers Zone DPMX is a bicycle powermeter. This ID is for the USB
serial interface in its charging dock for the control pods, via which some
settings for the pods can be modified.
Signed-off-by: Paul Jakma <paul@jakma.org>
Cc: Barry Redmond <barry@brimbrothers.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Some code (all error handling) submits CDBs that are allocated
on the stack. This breaks with CB/CBI code that tries to create
URB directly from SCSI command buffer - which happens to be in
vmalloced memory with vmalloced kernel stacks.
Let's make copy of the command in usb_stor_CB_transport.
Signed-off-by: Petr Vandrovec <petr@vandrovec.name>
Cc: stable <stable@vger.kernel.org>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
We normally use the passed in gfp flags for allocations, it's just these
two which were missed.
Fixes: 22d45f01a8 ("usb/xhci: replace pci_*_consistent() with dma_*_coherent()")
Cc: Mathias Nyman <mathias.nyman@intel.com>
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The only user of the functions mtu3_irq() and gpd_ring_empty() are in
the same file. They can be declared as static.
Signed-off-by: Sudip Mukherjee <sudip.mukherjee@codethink.co.uk>
Acked-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
xhci->slot_id is used for providing a way to pass slot id from the
command completion handler to the function waiting for completion.
It's shared by enumerations of all USB devices connected to an
xhci host. Hence, it's a source for possible races. Since we've
introduced command structure and the command queue to xhci driver.
It's better to move slot_id from xhci_hcd structure to xhci_command
structure. Hence the race source is removed.
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
xhci->addr_dev is used for the completion of both address device
and enable slot commands. It's shared by enumerations of all USB
devices connected to an xhci host. Hence, it's just a source for
possible races. Since we've introduced command structure and the
command queue to xhci driver. It is time to get rid of addr_dev
and use the completion in the command structure instead.
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
cmd_completion in struct xhci_virt_device is legacy. With command
structure and command queue introduced in xhci, cmd_completion is
not used any more. This patch removes it.
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
define GET_EP_CTX_STATE() macro to get the endpoint state from a
pointer to a le32 enpoint context structure
No functional changes
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch adds support for Renesas r8a7796 SoC. This SoC is not
compatible with r8a7795 because using firmware version differs.
Since the "V2" firmware can be used on both r8a7795 (es1.x) and r8a7796,
the "renesas,rcar-gen3-xhci" keeps to use the "V2" for now.
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch adds a new firmware version "V3" for r8a7796. This patch
also adds explanation of each version's information.
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
In xhci_handle_event(), when errors are detected, driver always sets
a bit in error_bitmask (one member of the xhci private driver data).
That means users have to retrieve and decode the value of error_bitmask
in xhci private driver data if they want to know whether those erros
ever happened in xhci_handle_event(). Otherwise, those errors are just
ignored silently.
This patch cleans up this by replacing the setting of error_bitmask
with the kernel print functions, so that users can easily check and
report the errors happened in xhci_handle_event().
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
We want one function that gives back urb in interrupt that can
be used in both normal cases and when killing off urbs.
Add small helpers that check if td is last_td_in_urb() and
that increase the td count of a urb inc_td_cnt()
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
mostly refactoring and code cleanup.
while handling transfer events we used to check the return value of
various functions to see if we can give back the URB.
Turns out the only case when those return values are set are when
finish_td() notices we are completing the last td in the URB.
give back the urb directly in finish_td() instead.
Only functional change is that we now increase the event ring dequeue
pointer in sowtware after giving back the URB. This should not matter
as we are in hardware interrupt context and the time when writing the
new event ring dequeue to hardware remains the same.
Hardware is the only one that can put event TRBs on the event ring.
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Move giving back the urb to a separate function
No functional changes
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Fixes the following sparse warning:
drivers/usb/host/xhci-ring.c:608:6: warning:
symbol 'xhci_unmap_td_bounce_buffer' was not declared.
Should it be static?
Signed-off-by: Wei Yongjun <weiyj.lk@gmail.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
No functional changes but a few debugging outputs removed
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Renaming variables, no functional changes
Event trbs on the event ring cointain a pointer to the transfer trb
on a endpoint ring that caused the event.
The naming has been very confusing as the event trb was called "event"
and the endpoint transfer trb was called "event_trb".
rename all variables that are realated to the endpoint transfer trb
from event_* to ep_*
No functional changes
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
mostly refactoring, but does also change error message if
we get a bad length in the event trb.
Adds a helper function to sum trb lengths of partial TDs
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Refactor pricess_ctrl_tx() to make it more readable
No functional changes
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
We only check for the URB_SHORT_NOT_OK urb flag to set the urb status
to -EREMOTEIO for transfers that didn't transfer all data.
This will be done in __usb_hcd_giveback() for other than isoc tranfers,
so remove the redundant check from xhci.
Also fix a couple split lines in debug messages to make them greppable.
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
replace the complex check for noop with a simple helper
Improve code readability
No functional changes
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Use the trb_is_link() and link_trb_toggles_cycle() helpers to
make the code more readable
No functional changes
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
There is no point in trying to reset the host controller by writing
to its registers if host is removed and registers just return 0xffffffff
bail out and return -ENODEV instead
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The old error message always stated that host was not halted
even after trying a certain time.
Host may fail the halt immediately as well with -ENODEV if device
is removed and returns 0xffffffff.
Use a more generic error message and show return value to know if we
failed with -ETIMEDOUT or -ENODEV
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Fist function called in xhci_halt is xhci_quiesce, so no point
in calling it twice
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The internal 60Mhz clock for host2 and host3 are useless in ULPI
phy mode, so we disable it when configuring ULPI PHY node for
those host.
Signed-off-by: Fabien Lahoudere <fabien.lahoudere@collabora.co.uk>
Signed-off-by: Peter Chen <peter.chen@nxp.com>
In order to use ULPI phy with usb host 2 and 3, we need to configure
controller register to enable ULPI features.
Each USB controller have different behaviour, so in order to avoid to have
several "swicth(data->index)" and lock/unlock, we prefer to get the index
switch and then test for features if they exist for this index.
This patch also remove useless test of reg and val. Those two values cannot
be NULL.
Signed-off-by: Fabien Lahoudere <fabien.lahoudere@collabora.co.uk>
Signed-off-by: Peter Chen <peter.chen@nxp.com>
The DMA descriptors are little endian, and we do a pretty good
job of handling them with the proper le32_to_cpu() markings, but
we don't actually mark them as __le32. This means checkers like
sparse can't easily find new bugs. Let's mark the members of
structures properly and fix the few places where we're missing
conversions.
Cc: Peter Chen <peter.chen@nxp.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Stephen Boyd <stephen.boyd@linaro.org>
Signed-off-by: Peter Chen <peter.chen@nxp.com>
The UHCI controllers in Intel chipsets rely on a platform-specific non-PME
mechanism for wakeup signalling. They can generate wakeup signals even
though they don't support PME.
We need to let the USB core know this so that it will enable runtime
suspend for UHCI controllers.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
CC: stable@vger.kernel.org
Drop invalid user-pointer checks from ioctl handlers.
A NULL-pointer can be valid in user space and copy_to_user() takes care
of sanity checking.
Signed-off-by: Johan Hovold <johan@kernel.org>
Use the tty get_icount operation instead of implementing TIOCGICOUNT
directly.
Signed-off-by: Johan Hovold <johan@kernel.org>
Acked-by: Oliver Neukum <oneukum@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Drop invalid user-pointer check from TIOCGSERIAL handler.
A NULL-pointer can be valid in user space and copy_to_user() takes care
of sanity checking.
Signed-off-by: Johan Hovold <johan@kernel.org>
Acked-by: Oliver Neukum <oneukum@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The TIOCMIWAIT implementation would return -EINVAL if any of the three
supported signals were included in the mask.
Instead of returning an error in case TIOCM_CTS is included, simply
drop the mask check completely, which is in accordance with how other
drivers implement this ioctl.
Fixes: 5a6a62bdb9 ("cdc-acm: add TIOCMIWAIT")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Acked-by: Oliver Neukum <oneukum@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Add super speed descriptors to f_hid.
Signed-off-by: Janusz Dziedzic <januszx.dziedzic@linux.intel.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
The patch improves readability of mv_u3d_start_queue()
by rearranging its code with two semantic modifications:
- assignment zero to ep->processing if usb_gadget_map_request() fails;
- propagation of error code from mv_u3d_req_to_trb() instead of
hardcoded -ENOMEM.
Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
mv_u3d_req_to_trb() does not check for dma mapping errors.
Found by Linux Driver Verification project (linuxtesting.org).
Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Finally get rid of dwc3_trace() hack. If any other
message is truly needed, we should add proper
tracepoints for them instead of hacking around with
dwc3_trace() or similar.
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
instead of using a simple trace_printk() wrapper,
let's add an actual tracepoint and print further
details about the endpoint being operated upon.
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
This patch adds support for the TI CC3200 LaunchPad board, which uses a
custom USB vendor ID and product ID. Channel A is used for JTAG, and
channel B is used for a UART.
Signed-off-by: Doug Brown <doug@schmorgal.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
usb-storage does not use any freezer apis, so drop the inclusion of
freezer.h from the drivers/usb/storage/usb.c file.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Use DEVICE_ATTR_RW for read-write attributes. This simplifies the
source code, improves readbility, and reduces the chance of
inconsistencies.
The semantic patch that makes this change is as follows:
(http://coccinelle.lip6.fr/)
// <smpl>
@rw@
declarer name DEVICE_ATTR;
identifier x,x_show,x_store;
@@
DEVICE_ATTR(x, \(0644\|S_IRUGO|S_IWUSR\), x_show, x_store);
@script:ocaml@
x << rw.x;
x_show << rw.x_show;
x_store << rw.x_store;
@@
if not (x^"_show" = x_show && x^"_store" = x_store)
then Coccilib.include_match false
@@
declarer name DEVICE_ATTR_RW;
identifier rw.x,rw.x_show,rw.x_store;
@@
- DEVICE_ATTR(x, \(0644\|S_IRUGO|S_IWUSR\), x_show, x_store);
+ DEVICE_ATTR_RW(x);
// </smpl>
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Use DEVICE_ATTR_WO for write ony attributes and DEVICE_ATTR_RO for read
only attributes. This simplifies the source code, improves readbility,
and reduces the chance of inconsistencies.
The semantic patch for the RO case is as follows:
(http://coccinelle.lip6.fr/)
// <smpl>
@ro@
declarer name DEVICE_ATTR;
identifier x,x_show;
@@
DEVICE_ATTR(x, \(0444\|S_IRUGO\), x_show, NULL);
@script:ocaml@
x << ro.x;
x_show << ro.x_show;
@@
if not (x^"_show" = x_show) then Coccilib.include_match false
@@
declarer name DEVICE_ATTR_RO;
identifier ro.x,ro.x_show;
@@
- DEVICE_ATTR(x, \(0444\|S_IRUGO\), x_show, NULL);
+ DEVICE_ATTR_RO(x);
// </smpl>
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch fixes possibility of dereference by NULLL pointer in "[PATCH
v5 1/3] usbip: vhci extension: modifications to vhci driver" which has
been merged to 4.9-rc1. It occurs when a URB with pointer to invalid
USB/IP device is enqueued in race condition against detach operation.
A pointer was passed to vdev_to_vhci() before NULL check.
In vdev_to_vhci(), there's a dereference by the pointer.
This patch moves vdev_to_vhci() after NULL check of the pointer.
Signed-off-by: Nobuo Iwata <nobuo.iwata@fujixerox.co.jp>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
variable struct usb_cdc_parsed_header h may be used
uninitialized in acm_probe.
In kernel 4.8.
/* handle quirks deadly to normal probing*/
if (quirks == NO_UNION_NORMAL)
...
goto skip_normal_probe;
}
we bypass call to
cdc_parse_cdc_header(&h, intf, buffer, buflen);
but later use h in
if (h.usb_cdc_country_functional_desc) { /* export the country data */
Signed-off-by: Oliver Neukum <oneukum@suse.com>
CC: stable@vger.kernel.org
Reported-by: Victor Sologoubov <victor0@rambler.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Never seen XHCI auto handoff working on TI and RENESAS cards.
Eventually, we force handoff. This code forces the handoff
unconditionally. It saves 5 seconds boot time for each card.
Signed-off-by: Babu Moger <babu.moger@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This suppresses printing the error message "failed to get phy" in the
kernel log when the error is -EPROBE_DEFER. This prevents usless noise
in the kernel log.
Signed-off-by: David Lechner <david@lechnology.com>
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Intel's BXT devices need to execute a _DSM method
during {runtime_,}{suspend,resume} in order to get a
chunk of dwc3 to power gate and save some extra
power.
Let's do that now.
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
We'll be tracking a little more information for PCI
drivers, it's about time we add a private structure
for that.
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
When we get a half-way processed request, we should
make sure to try to prepare further TRBs for it or
for any possibly queued up request held in our
pending_list. This will make sure our controller is
kept busy for as long as possible.
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Say we have three requests prepared to the HW (reqA,
reqB, and reqC). All of them are composed of
SG-lists with several entries and they all requests
interrupt only on last TRBs of the SG-list.
When we get interrupt for reqA, it could be that
reqB is already half-way transferred and some of its
TRBs will have HWO already cleared.
It's okay to free up TRBs without HWO bit set, but
we need to guarantee we don't giveback a request
that's half-way transferred as that will confuse
gadget drivers.
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
In cases where we're given an SG-list which is
longer than the amount of currently available TRBs,
we will be left with the same request on
started_list and we should prioritize that request
over possible new requests on pending_list. That's
a way to guarantee requests complete in order.
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
This will give us a simpler way of figuring out how
many bytes were left in each TRB. It's useful for
cases where we queue only part of an SG-list due to
amount of available TRBs at the time of kicking the
transfer.
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
If XferNotReady comes before usb_ep_queue() we will
set our PENDING request flag and wait for a
request. However, originally, we were assuming
usb_ep_queue() would always happen before our first
XferNotReady and that causes a corner case where we
could try to issue ENDTRANSFER command before
STARTTRANSFER.
Let's fix that by tracking endpoints which have been
started.
Reported-by: Janusz Dziedzic <januszx.dziedzic@intel.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Instead of just delaying for 100us, we should
actually wait for End Transfer Command Complete
interrupt before moving on. Note that this should
only be done if we're dealing with one of the core
revisions that actually require the interrupt before
moving on.
[ felipe.balbi@linux.intel.com: minor improvements ]
Signed-off-by: Baolin Wang <baolin.wang@linaro.org>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
dev_kfree_skb_any() is used to free packets that are dropped by the
network stack. Therefore the function should not be used for packets
that have been successfully processed by the network stack. Instead
dev_consume_skb_any() has to be used for such consumed packets.
This separation helps to identify dropped packets.
Signed-off-by: Torsten Polle <tpolle@de.adit-jv.com>
Signed-off-by: Harish Jenny K N <harish_kandiga@mentor.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Socket buffers should be linked to the (network) device that allocated
the buffers. __netdev_alloc_skb performs this task.
Signed-off-by: Torsten Polle <tpolle@de.adit-jv.com>
Signed-off-by: Jim Baxter <jim_baxter@mentor.com>
Signed-off-by: Harish Jenny K N <harish_kandiga@mentor.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
