Commit Graph

603024 Commits

Author SHA1 Message Date
Wolfram Sang
9adca34b7e staging: ks7010: drop counting sd errors
They were counted but never really used anywhere. Also change the printk
to a debug print, since it mostly shows on the expected -ENOMEDIUM on
card removal.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-07 22:42:53 -07:00
Wolfram Sang
6b0cb0b02e staging: ks7010: simplify module_init/exit
The printouts are not needed, the driver core has enough debug output
for this if wanted. So, use a helper to save boilerplate code.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-07 22:42:53 -07:00
Wolfram Sang
4e66308e7d staging: ks7010: adapt to new trans_start handling
trans_start is gone from netdevice, so use the new helper function to
set the mark.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-07 22:42:53 -07:00
Wolfram Sang
e1240140f9 staging: ks7010: fix module annotations
List all authors, beautify description, match license to what is stated
in file headers, add firmware information.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-07 22:42:53 -07:00
Wolfram Sang
2801d7a289 staging: ks7010: remove supported card table with one element
There is only this card supported, no need to iterate over the table.
The resulting firmware filename wasn't used anyway, but came from the
config file or hardcoded default.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-07 22:42:53 -07:00
Wolfram Sang
cdf6ecc5ee staging: ks7010: indent ks7010_sdio.c
Unlike the previous patches which are plain indent outcomes, this has
some manual fixups to be not overly strict with the 80 char limit.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-07 22:42:53 -07:00
Wolfram Sang
79c2df5866 staging: ks7010: indent michael_mic.h
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-07 22:42:53 -07:00
Wolfram Sang
cab898fbb0 staging: ks7010: indent michael_mic.c
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-07 22:42:53 -07:00
Wolfram Sang
1df655478e staging: ks7010: indent ks_wlan_net.c
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-07 22:42:53 -07:00
Wolfram Sang
2086ffac7b staging: ks7010: indent ks_wlan_ioctl.h
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-07 22:42:53 -07:00
Wolfram Sang
d6e25e7048 staging: ks7010: indent ks_wlan.h
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-07 22:42:53 -07:00
Wolfram Sang
e3d7482607 staging: ks7010: indent ks_hostif.h
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-07 22:42:53 -07:00
Wolfram Sang
20c4f9c52e staging: ks7010: indent ks_hostif.c
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-07 22:42:53 -07:00
Wolfram Sang
4a3e75483d staging: ks7010: indent ks7010_sdio.h
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-07 22:42:53 -07:00
Wolfram Sang
84e18a94b9 staging: ks7010: indent ks7010_config.c
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-07 22:42:53 -07:00
Wolfram Sang
5d7696bcce staging: ks7010: indent eap_packet.h
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-07 22:42:53 -07:00
Wolfram Sang
feedcf1a5f staging: ks7010: remove unecessary typedef
Let's simply specify the struct to keep in sync with kernel coding
style.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-07 22:42:53 -07:00
Wolfram Sang
acd15986df staging: ks7010: add example cfg file as a reference
We want to remove it, but to do so properly, it is good to have a
working example. Needs to be copied to /lib/firmware in order to be
used.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-07 22:42:53 -07:00
Wolfram Sang
f8d72df83c staging: ks7010: fix printk format warnings
Use proper type for size_t.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-07 22:42:53 -07:00
Wolfram Sang
4fdec6ad1c staging: ks7010: make loading config file optional
We have sane defaults, so we don't need to bail out if there is no
config file. Note that the config file should go away completely in
favour of configuration mechanisms already upstream.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-07 22:42:53 -07:00
Wolfram Sang
f88e6d3317 staging: ks7010: really iterate over multicast addresses
The loop variable was defined but not really used. Fix this.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-07 22:42:53 -07:00
Wolfram Sang
564efd7935 staging: ks7010: delete seperate debug header
Move the one debug macro to the generic wlan header.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-07 22:42:53 -07:00
Wolfram Sang
3215bb1a4b staging: ks7010: use kernel helper to print buffer
No need for an open coded one.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-07 22:42:53 -07:00
Wolfram Sang
19b0832759 staging: ks7010: use long preamble as default
I had a problem connecting to a network with a short preamble, so let's
make the safer option the default.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-07 22:42:53 -07:00
Wolfram Sang
e8593a8abf staging: ks7010: avoid workqueue races
My Spectec SDW823 card oopsed when it was already inserted during boot.
When debugging this, I noticed that the card init was done in a seperate
workqueue which was only activated once in probe. After removing the
workqueue and calling the card init directly from probe, the OOPS went
away. It turned out this is the same OOPS which happened when removing
the card, so this seems possible now. Note: There is still a
not-understood card-removed event during boot, but at least it doesn't
crash anymore and the card will be re-probed right away.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-07 22:42:53 -07:00
Wolfram Sang
72bf750007 staging: ks7010: remove code for old kernel versions
No need to be backwards compatible.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-07 22:42:53 -07:00
Wolfram Sang
4ab274017b staging: ks7010: remove checks for WIRELESS_EXT version
We are by far newer than that anyhow.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-07 22:42:53 -07:00
Wolfram Sang
c3fe667f0a staging: ks7010: remove custom firmware loader
FW_LOADER works fine, no need for a open coded fallback.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-07 22:42:53 -07:00
Wolfram Sang
021873f650 staging: ks7010: remove non-SDIO code and #ifdefs
I couldn't find any trace of code or even products using ks7010 with
something else than SDIO. So, remove the conditionals.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-07 22:42:53 -07:00
Wolfram Sang
13a9930d15 staging: ks7010: add driver from Nanonote extra-repository
See the TODO for details where this driver came from. Only a few minor
changes were made to make the driver suitable for staging:

* updated Kconfig help text and dependencies
* added TODO
* removed two __DATE__ and __TIME__ printouts to allow reproducible builds
* added to staging main Kconfig + Makefile

Tested on a Renesas Salvator-X board with a Spectec SDW-823 card. I
could connect to a WPA-protected network.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-07 22:42:53 -07:00
Tobin C Harding
e3c9078af8 staging: lustre: set function scope with static
A number of function definitions were found to be candidates for
static scoping. This patch adds static to these functions.

Signed-off-by: Tobin C Harding <me@tobin.cc>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-07 22:40:16 -07:00
Oleg Drokin
d484ed6f10 staging/lustre/osc: Get rid of osc_page_protected()
There was a proper debugging function by that name that's long
gone.
The currently remaining shadow that always returns true is not
really useful so it could be dropped along with all the
asserts it is part of.

Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-07 22:39:41 -07:00
Oleg Drokin
d4722fccbe staging/lustre/osc: Remove ops_temp from osc_page
It's no longer used and never set anywhere.

Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-07 22:39:41 -07:00
Jinshan Xiong
966c4a8f80 staging/lustre/llite: define per open file cache for ll_cl_context
In ll_readpage and ll_write_begin, it needs to find out the cl_env
and cl_io, a.k.a ll_cl_context, when the IO is initialized. It used
to call cl_env_get() to figure it out but turned out to be contended
if multiple threads are doing IO.

In this patch, a per open file ll_cl_context cache is created. When
IO type of CIT_READ, CIT_WRITE and CIR_FAULT is initialized, it will
add a ll_cl_context into the cache maintained in ll_file_data. In this
case, the ll_cl_context can be found in ll_readpage and ll_write_begin
later.

Signed-off-by: Jinshan Xiong <jinshan.xiong@intel.com>
Reviewed-on: http://review.whamcloud.com/10503
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-5108
Reviewed-on: http://review.whamcloud.com/10955
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-5260
Reviewed-by: Lai Siyao <lai.siyao@intel.com>
Reviewed-by: Bobi Jam <bobijam@gmail.com>
Signed-off-by: Oleg Drokin <oleg.drokin@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-07 22:39:41 -07:00
Jinshan Xiong
ecd4df4a7a staging/lustre/lov: calculate file offset correctly
In lov_stripe_pgoff(), it calls lov_stripe_size() to calculate the
file size by ost_size, which will be wrong if the stripe_index
happens to be stripe aligned.

Signed-off-by: Jinshan Xiong <jinshan.xiong@intel.com>
Reviewed-on: http://review.whamcloud.com/14462
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-6482
Reviewed-by: Bobi Jam <bobijam@hotmail.com>
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Signed-off-by: Oleg Drokin <oleg.drokin@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-07 22:39:41 -07:00
James Simmons
b788dc51e4 staging: lustre: llite: drop acl from cache
Commit b8a7a3a6 change get_acl() for posix xattr to always cache
the ACL which increases the reference count. That reference count
can be reduced by have ll_get_acl() call forget_cached_acl() which
it wasn't. When an inode gets deleted by Lustre the POSIX ACL
reference count is tested to ensure its 1 and if not produces an error.
Since forget_cached_acl() was not called Lustre started to complain.
This patch changes ll_get_acl() to call forget_cached_acl().

Signed-off-by: James Simmons <jsimmons@infradead.org>
Reviewed-by: Andreas Gruenbacher <agruenba@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-07 22:39:41 -07:00
Tobin C Harding
c6c7a17010 staging: lustre: llite: kzalloc/copy_to_user to memdup_user
kzalloc call followed by copy_to_user can be replaced by call to memdup_user.

Signed-off-by: Tobin C Harding <me@tobin.cc>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-07 22:38:19 -07:00
Lidza Louina
db3c16cdde staging/lustre/ptlrpc: Removes potential null dereference
The lustre_msg_buf method could return NULL. Subsequent code didn't
check if it's null before using it. This patch adds two checks.

Signed-off-by: Lidza Louina <lidza.louina@oracle.com>
Acked-by: Oleg Drokin <oleg.drokin@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-07 22:38:19 -07:00
Muhammad Falak R Wani
423b09b8f4 staging: lustre: use setup_timer().
Use setup_timer() for initializing the timer, instead of structure
assignments.
This is the preferred/standard way.

Signed-off-by: Muhammad Falak R Wani <falakreyaz@gmail.com>
Acked-by: James Simmons <jsimmons@infradead.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-07 22:38:19 -07:00
James Simmons
147280d88f staging: lustre: ko2iblnd: fix memory corruption with fragments
In my test of the upstream client this change exposed a long
standing issues where we have a offset that is not page algined
would causes us to access memory beyond the scatter gather list
which was causing memory corruption when all 256 fragments were
in use.

Signed-off-by: James Simmons <jsimmons@infradead.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-07 22:38:19 -07:00
James Simmons
cd779f2ede staging: lustre: libcfs: fix memort leak in libcfs crypto layer
During code review Boyko discovered a memory leak. This
patch fixes that leak.

Signed-off-by: James Simmons <uja.ornl@yahoo.com>
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-4423
Reviewed-on: http://review.whamcloud.com/19716
Reviewed-by: Alexander Boyko <alexander.boyko@seagate.com>
Reviewed-by: Frank Zago <fzago@cray.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>
Signed-off-by: James Simmons <jsimmons@infradead.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-07 22:38:19 -07:00
Li Dongyang
494025c634 staging: lustre: o2iblnd: make rdma_create_id() support containers
Add support for lustre's ko2iblnd driver to work with
containers which was requested by Sebastien Buisson.

Signed-off-by: Li Dongyang <dongyang.li@anu.edu.au>
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-6215
Reviewed-on: http://review.whamcloud.com/18759
Reviewed-by: James Simmons <uja.ornl@yahoo.com>
Reviewed-by: Sebastien Buisson <sbuisson@ddn.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>
Signed-off-by: James Simmons <jsimmons@infradead.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-07 22:38:19 -07:00
Greg Kroah-Hartman
03cce00b4b First round of iio fixes for the 4.7 cycle.
A slightly bumper set due to travel delaying the pull request and a fair few
 issues with the recent merge window patches.  Patches all over the place.
 The st-sensors one is probably the most involved, but definitly solves the
 issues seen.  Note there are some other issues around that handler
 (and the fact that a lot of boards tie a level interrupt chip to an
 edge interrupt only irq chip).  These are not regressions however, so
 will turn up the slow route.
 
 * core
   - iio_trigger_attach_pollfunc had some really badly wrong error handling.
   Another nasty triggered whilst chasing down issues with the st sensors
   rework below.
 * ad5592r
   - fix an off by one error when allocating channels.
 * am2315
   - a stray mutex unlock before we ever take the lock.
 * apds9960
   - missing a parent in the driver model (which should be the i2c device).
   Result is it doesn't turn up under /sys/bus/i2c/devices which some
   userspace code uses for repeatable device identification.
 * as3935
   - ABI usage bug which meant a processed value was reported as raw. Now
     reporting scale as well to ensure userspace has the info it needs.
   - Don't return processed value via the buffer - it doesn't conform to
     the ABI and will overflow in some cases.
   - Fix a wrongly sized buffer which would overflow trashing part of the
     stack.  Also move it onto the heap as part of the fix.
 * bh1780
   - a missing return after write in debugfs lead to an incorrect read and
     a null pointer dereference.
   - dereferencing the wrong pointer in suspend and resume leading to
     unpredictable results.
   - assign a static name to avoid accidentally ending up with no name if
     loaded via device tree.
 * bmi160
   - output data rate for the accelerometer was incorrectly reported. Fix it.
   - writing the output data rate was also wrong due to reverse parameters.
 * bmp280
   - error message for wrong chip ID gave the wrong expected value.
 * hdc100x
   - mask for writing the integration time was wrong allowin g us to get
   'stuck' in a particular value with no way back.
   - temperature reported in celsius rather than millicelsius as per the
   ABI.
   - Get rid of some incorrect data shifting which lead to readings being
   rather incorrect.
 * max44000
   - drop scale attribute for proximity as it is an unscaled value (depends
     on what is in range rather than anything knowable at the detector).
 * st-pressure
   - ABI compliance fixes - units were wrong.
 * st-sensors
   - We introduced some nasty issues with the recent switch over to a
   a somewhat threaded handler in that we broke using a software trigger
   with these devices.  Now do it properly.  It's a larger patch than ideal
   for a fix, but the logic is straight forward.
   - Make sure the trigger is initialized before requesting the interrupt.
   This matters now the interrupt can be shared. Before it was ugly and wrong
   but short of flakey hardware could not be triggered.
   - Hammer down the dataready pin at boot - otherwise with really
   unlucky timing things could get interestingly wedged requiring a hard power
   down of the chip.
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Merge tag 'iio-fixes-for-4.7a' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-linus

Jonathan writes:

First round of iio fixes for the 4.7 cycle.

A slightly bumper set due to travel delaying the pull request and a fair few
issues with the recent merge window patches.  Patches all over the place.
The st-sensors one is probably the most involved, but definitly solves the
issues seen.  Note there are some other issues around that handler
(and the fact that a lot of boards tie a level interrupt chip to an
edge interrupt only irq chip).  These are not regressions however, so
will turn up the slow route.

* core
  - iio_trigger_attach_pollfunc had some really badly wrong error handling.
  Another nasty triggered whilst chasing down issues with the st sensors
  rework below.
* ad5592r
  - fix an off by one error when allocating channels.
* am2315
  - a stray mutex unlock before we ever take the lock.
* apds9960
  - missing a parent in the driver model (which should be the i2c device).
  Result is it doesn't turn up under /sys/bus/i2c/devices which some
  userspace code uses for repeatable device identification.
* as3935
  - ABI usage bug which meant a processed value was reported as raw. Now
    reporting scale as well to ensure userspace has the info it needs.
  - Don't return processed value via the buffer - it doesn't conform to
    the ABI and will overflow in some cases.
  - Fix a wrongly sized buffer which would overflow trashing part of the
    stack.  Also move it onto the heap as part of the fix.
* bh1780
  - a missing return after write in debugfs lead to an incorrect read and
    a null pointer dereference.
  - dereferencing the wrong pointer in suspend and resume leading to
    unpredictable results.
  - assign a static name to avoid accidentally ending up with no name if
    loaded via device tree.
* bmi160
  - output data rate for the accelerometer was incorrectly reported. Fix it.
  - writing the output data rate was also wrong due to reverse parameters.
* bmp280
  - error message for wrong chip ID gave the wrong expected value.
* hdc100x
  - mask for writing the integration time was wrong allowin g us to get
  'stuck' in a particular value with no way back.
  - temperature reported in celsius rather than millicelsius as per the
  ABI.
  - Get rid of some incorrect data shifting which lead to readings being
  rather incorrect.
* max44000
  - drop scale attribute for proximity as it is an unscaled value (depends
    on what is in range rather than anything knowable at the detector).
* st-pressure
  - ABI compliance fixes - units were wrong.
* st-sensors
  - We introduced some nasty issues with the recent switch over to a
  a somewhat threaded handler in that we broke using a software trigger
  with these devices.  Now do it properly.  It's a larger patch than ideal
  for a fix, but the logic is straight forward.
  - Make sure the trigger is initialized before requesting the interrupt.
  This matters now the interrupt can be shared. Before it was ugly and wrong
  but short of flakey hardware could not be triggered.
  - Hammer down the dataready pin at boot - otherwise with really
  unlucky timing things could get interestingly wedged requiring a hard power
  down of the chip.
2016-06-07 22:26:20 -07:00
Srinivas Kandagatla
11c011a5e7 usb: echi-hcd: Add ehci_setup check before echi_shutdown
This patch protects system from crashing at shutdown in
cases where usb host is not added yet from OTG controller driver.
As ehci_setup() not done yet, so stop accessing registers or
variables initialized as part of ehci_setup().

The use case is simple, for boards like DB410c where the usb host
or device functionality is decided based on the micro-usb cable
presence. If the board boots up with micro-usb connected, the
OTG driver like echi-msm would not add the usb host by default.
However a system shutdown would go and access registers and
uninitialized variables, resulting in below crash.

Unable to handle kernel NULL pointer dereference at virtual address
 00000008
pgd = ffffffc034581000
[00000008] *pgd=0000000000000000, *pud=0000000000000000
CPU: 2 PID: 1957 Comm: reboot Not tainted 4.6.0+ #99
task: ffffffc034bc0000 ti: ffffffc0345cc000 task.ti: ffffffc0345cc000
PC is at ehci_halt+0x54/0x108
LR is at ehci_halt+0x38/0x108
pc : [<ffffff800869837c>] lr : [<ffffff8008698360>] pstate: a00001c5
sp : ffffffc0345cfc60
x29: ffffffc0345cfc60 x28: ffffffc0345cc000
x27: ffffff8008a4d000 x26: 000000000000008e
x25: ffffff8008d86cb0 x24: ffffff800908b040
x23: ffffffc036068870 x22: ffffff8009d0a000
x21: ffffffc03512a410 x20: ffffffc03512a410
x19: ffffffc03512a338 x18: 00000000000065ba
x17: ffffff8009b16b80 x16: 0000000000000003
x15: 00000000000065b9 x14: 00000000000065b6
x13: 0000000000000000 x12: 0000000000000000
x11: 000000000000003d x10: ffffffc0345cf9e0
x9 : 0000000000000001 x8 : ffffffc0345cc000
x7 : ffffff8008698360 x6 : 0000000000000000
x5 : 0000000000000080 x4 : 0000000000000001
x3 : 0000000000000000 x2 : 0000000000000000
x1 : 0000000000000008 x0 : ffffffc034bc0000

Process reboot (pid: 1957, stack limit = 0xffffffc0345cc020)
Stack: (0xffffffc0345cfc60 to 0xffffffc0345d0000)
fc60: ffffffc0345cfc90 ffffff8008698448 ffffffc03512a338 ffffffc03512a338
fc80: ffffffc03512a410 ffffff8008a3bbfc ffffffc0345cfcc0 ffffff8008698548
fca0: ffffffc03512a338 ffffffc03512a000 ffffffc03512a410 ffffff8009d0a000
fcc0: ffffffc0345cfcf0 ffffff800865d2bc ffffffc036068828 ffffffc036068810
fce0: ffffffc036003810 ffffff800853f43c ffffffc0345cfd00 ffffff800854338c
fd00: ffffffc0345cfd10 ffffff800853f45c ffffffc0345cfd60 ffffff80080e0f48
fd20: 0000000000000000 0000000001234567 ffffff8008f8c000 ffffff8008f8c060
fd40: 0000000000000000 0000000000000015 0000000000000120 ffffff80080e0f30
fd60: ffffffc0345cfd70 ffffff80080e1020 ffffffc0345cfd90 ffffff80080e12fc
fd80: 0000000000000000 0000000001234567 0000000000000000 ffffff8008085e70
fda0: 0000000000000000 0000005592905000 ffffffffffffffff 0000007f79daf1cc
fdc0: 0000000000000000 0000000000000000 0000007ffcbb1198 000000000000000a
fde0: 00000055928d3f58 0000000000000001 ffffffc034900000 00000000fffffffe
fe00: ffffffc034900000 0000007f79da902c ffffffc0345cfe40 ffffff800820af38
fe20: 0000000000000000 0000007ffcbb1078 ffffffffffffffff ffffff80081e9b38
fe40: ffffffc0345cfe60 ffffff80081eb410 ffffffc0345cfe60 ffffff80081eb444
fe60: ffffffc0345cfec0 ffffff80081ec4f4 0000000000000000 0000007ffcbb1078
fe80: ffffffffffffffff 0000000000000015 ffffffc0345cfec0 0000007ffcbb1078
fea0: 0000000000000002 000000000000000a ffffffffffffffff 0000000000000000
fec0: 0000000000000000 ffffff8008085e70 fffffffffee1dead 0000000028121969
fee0: 0000000001234567 0000000000000000 ffffffffffffffff 8080800000800000
ff00: 0000800000808080 0000007ffcbb10f0 000000000000008e fefeff54918cb8c7
ff20: 7f7f7f7fffffffff 0101010101010101 0000000000000010 0000000000000000
ff40: 0000000000000000 0000007f79e33588 0000005592905eb8 0000007f79daf1b0
ff60: 0000007ffcbb1340 0000005592906000 0000005592905000 0000005592906000
ff80: 0000005592907000 0000000000000002 0000007ffcbb1d98 0000005592906000
ffa0: 00000055928d2000 0000000000000000 0000000000000000 0000007ffcbb1aa0
ffc0: 00000055928b819c 0000007ffcbb1aa0 0000007f79daf1cc 0000000000000000
ffe0: fffffffffee1dead 000000000000008e 05ef555057155555 d555544d55d775d3
Call trace:
Exception stack(0xffffffc0345cfaa0 to 0xffffffc0345cfbc0)
Set corner to 6
faa0: ffffffc03512a338 ffffffc03512a410 ffffffc0345cfc60 ffffff800869837c
fac0: ffffff8008114210 0000000100000001 ffffff8009ce1b20 ffffff8009ce5f20
fae0: ffffffc0345cfb80 ffffff80081145a8 ffffffc0345cfc10 ffffff800810b924
fb00: ffffffc0345cc000 00000000000001c0 ffffffc03512a410 ffffff8009d0a000
fb20: ffffffc036068870 ffffff800908b040 ffffff8008d86cb0 000000000000008e
fb40: ffffffc034bc0000 0000000000000008 0000000000000000 0000000000000000
fb60: 0000000000000001 0000000000000080 0000000000000000 ffffff8008698360
fb80: ffffffc0345cc000 0000000000000001 ffffffc0345cf9e0 000000000000003d
fba0: 0000000000000000 0000000000000000 00000000000065b6 00000000000065b9
[<ffffff800869837c>] ehci_halt+0x54/0x108
[<ffffff8008698448>] ehci_silence_controller+0x18/0xcc
[<ffffff8008698548>] ehci_shutdown+0x4c/0x64
[<ffffff800865d2bc>] usb_hcd_platform_shutdown+0x1c/0x24
[<ffffff800854338c>] platform_drv_shutdown+0x20/0x28
[<ffffff800853f45c>] device_shutdown+0xf4/0x1b0
[<ffffff80080e0f48>] kernel_restart_prepare+0x34/0x3c
[<ffffff80080e1020>] kernel_restart+0x14/0x74
[<ffffff80080e12fc>] SyS_reboot+0x110/0x21c
[<ffffff8008085e70>] el0_svc_naked+0x24/0x28
Code: 53001c42 350000a2 d5033e9f 91002021 (b9000022)

Fixes 4bb3cad712 ("usb: host: ehci-msm: Register usb shutdown function")
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Tested-by: Pramod Gurav <pramod.gurav@linaro.org>
Tested-by: Andy Gross <andy.gross@linaro.org>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-07 22:15:25 -07:00
Andy Gross
815c9d6a3c usb: host: ehci-msm: Conditionally call ehci suspend/resume
This patch fixes a suspend/resume issue where the driver is blindly
calling ehci_suspend/resume functions when the ehci hasn't been setup.
This results in a crash during suspend/resume operations.

Signed-off-by: Andy Gross <andy.gross@linaro.org>
Tested-by: Pramod Gurav <pramod.gurav@linaro.org>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-07 22:15:25 -07:00
Geert Uytterhoeven
1700bd9872 MAINTAINERS: Add file patterns for usb device tree bindings
Submitters of device tree binding documentation may forget to CC
the subsystem maintainer if this is missing.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: linux-usb@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-07 22:15:25 -07:00
Thierry Reding
7cc9ca5a99 usb: host: ehci-tegra: Avoid getting the same reset twice
Starting with commit 0b52297f22 ("reset: Add support for shared reset
controls") there is a reference count for reset control assertions. The
goal is to allow resets to be shared by multiple devices and an assert
will take effect only when all instances have asserted the reset.

In order to preserve backwards-compatibility, all reset controls become
exclusive by default. This is to ensure that reset_control_assert() can
immediately assert in hardware.

However, this new behaviour triggers the following warning in the EHCI
driver for Tegra:

[    3.365019] ------------[ cut here ]------------
[    3.369639] WARNING: CPU: 0 PID: 1 at drivers/reset/core.c:187 __of_reset_control_get+0x16c/0x23c
[    3.382151] Modules linked in:
[    3.385214] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.6.0-rc6-next-20160503 #140
[    3.392769] Hardware name: NVIDIA Tegra SoC (Flattened Device Tree)
[    3.399046] [<c010fa50>] (unwind_backtrace) from [<c010b120>] (show_stack+0x10/0x14)
[    3.406787] [<c010b120>] (show_stack) from [<c0347dcc>] (dump_stack+0x90/0xa4)
[    3.414007] [<c0347dcc>] (dump_stack) from [<c011f4fc>] (__warn+0xe8/0x100)
[    3.420964] [<c011f4fc>] (__warn) from [<c011f5c4>] (warn_slowpath_null+0x20/0x28)
[    3.428525] [<c011f5c4>] (warn_slowpath_null) from [<c03cc8cc>] (__of_reset_control_get+0x16c/0x23c)
[    3.437648] [<c03cc8cc>] (__of_reset_control_get) from [<c0526858>] (tegra_ehci_probe+0x394/0x518)
[    3.446600] [<c0526858>] (tegra_ehci_probe) from [<c04516d8>] (platform_drv_probe+0x4c/0xb0)
[    3.455029] [<c04516d8>] (platform_drv_probe) from [<c044fe78>] (driver_probe_device+0x1ec/0x330)
[    3.463892] [<c044fe78>] (driver_probe_device) from [<c0450074>] (__driver_attach+0xb8/0xbc)
[    3.472320] [<c0450074>] (__driver_attach) from [<c044e1ec>] (bus_for_each_dev+0x68/0x9c)
[    3.480489] [<c044e1ec>] (bus_for_each_dev) from [<c044f338>] (bus_add_driver+0x1a0/0x218)
[    3.488743] [<c044f338>] (bus_add_driver) from [<c0450768>] (driver_register+0x78/0xf8)
[    3.496738] [<c0450768>] (driver_register) from [<c010178c>] (do_one_initcall+0x40/0x170)
[    3.504909] [<c010178c>] (do_one_initcall) from [<c0c00ddc>] (kernel_init_freeable+0x158/0x1f8)
[    3.513600] [<c0c00ddc>] (kernel_init_freeable) from [<c0810784>] (kernel_init+0x8/0x114)
[    3.521770] [<c0810784>] (kernel_init) from [<c0107778>] (ret_from_fork+0x14/0x3c)
[    3.529361] ---[ end trace 4bda87dbe4ecef8a ]---

The reason is that Tegra SoCs have three EHCI controllers, each with a
separate reset line. However the first controller contains UTMI pads
configuration registers that are shared with its siblings and that are
reset as part of the first controller's reset. There is special code in
the driver to assert and deassert this shared reset at probe time, and
it does so irrespective of which controller is probed first to ensure
that these shared registers are reset before any of the controllers are
initialized. Unfortunately this means that if the first controller gets
probed first, it will request its own reset line and will subsequently
request the same reset line again (temporarily) to perform the reset.
This used to work fine before the above-mentioned commit, but now
triggers the new WARN.

Work around this by making sure we reuse the controller's reset if the
controller happens to be the first controller.

Cc: Philipp Zabel <p.zabel@pengutronix.de>
Cc: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-07 22:15:25 -07:00
Thierry Reding
f8a15a9650 usb: host: ehci-tegra: Grab the correct UTMI pads reset
There are three EHCI controllers on Tegra SoCs, each with its own reset
line. However, the first controller contains a set of UTMI configuration
registers that are shared with its siblings. These registers will only
be reset as part of the first controller's reset. For proper operation
it must be ensured that the UTMI configuration registers are reset
before any of the EHCI controllers are enabled, irrespective of the
probe order.

Commit a47cc24cd1 ("USB: EHCI: tegra: Fix probe order issue leading to
broken USB") introduced code that ensures the first controller is always
reset before setting up any of the controllers, and is never again reset
afterwards.

This code, however, grabs the wrong reset. Each EHCI controller has two
reset controls attached: 1) the USB controller reset and 2) the UTMI
pads reset (really the first controller's reset). In order to reset the
UTMI pads registers the code must grab the second reset, but instead it
grabbing the first.

Fixes: a47cc24cd1 ("USB: EHCI: tegra: Fix probe order issue leading to broken USB")
Acked-by: Jon Hunter <jonathanh@nvidia.com>
Cc: stable@vger.kernel.org
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-07 22:15:25 -07:00
Sudip Mukherjee
dcb21ad438 USB: mos7720: delete parport
parport subsystem has introduced parport_del_port() to delete a port
when it is going away. Without parport_del_port() the registered port
will not be unregistered.
To reproduce and verify the error:
Command to be used is : ls /sys/bus/parport/devices
1) without the device attached there is no output as there is no
registered parport.
2) Attach the device, and the command will show "parport0".
3) Remove the device and the command still shows "parport0".
4) Attach the device again and we get "parport1".

With the patch applied:
1) without the device attached there is no output as there is no
registered parport.
2) Attach the device, and the command will show "parport0".
3) Remove the device and there is no output as "parport0" is now
removed.
4) Attach device again to get "parport0" again.

Cc: <stable@vger.kernel.org> # 4.2+
Signed-off-by: Sudip Mukherjee <sudip.mukherjee@codethink.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-07 22:15:25 -07:00
Michał Pecio
c66f59ee50 USB: OHCI: Don't mark EDs as ED_OPER if scheduling fails
Since ed_schedule begins with marking the ED as "operational",
the ED may be left in such state even if scheduling actually
fails.

This allows future submission attempts to smuggle this ED to the
hardware behind the scheduler's back and without linking it to
the ohci->eds_in_use list.

The former causes bandwidth saturation and data loss on isoc
endpoints, the latter crashes the kernel when attempt is made
to unlink such ED from this list.

Fix ed_schedule to update ED state only on successful return.

Signed-off-by: Michal Pecio <michal.pecio@gmail.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-07 22:15:25 -07:00