From cefcdab08d1c9636c4a7290bc2bbe937d051bce4 Mon Sep 17 00:00:00 2001
From: Volker Ernst <volker.ernst@txtr.com>
Date: Mon, 26 Apr 2010 22:51:07 +0200
Subject: [PATCH] ARM: mx3: Fix a race condition in mxcmmc
This fixes a race condition regarding interrupt bits in the SDHC
controller driver code.
In case of PIO-transfer it does not clear SDHC-status bit#11/12
in the INT-handler anymore. INT-handler might be called during
an ongoing PIO-data-transfer (with some other INT-flag set) and
PIO-transfer depends on these bits being set to detect the end
of the data-transfer. This also means that at the end of PIO-
transfer that PIO-software has to clear these bits itself.
However in case of DMA-transfer these bits have to be cleared
in the INT-handler, because they are used to generate INTs then.
Works solid, no more problems here, can transfer big files.
Signed-off-by: Volker Ernst <volker.ernst@txtr.com>
Acked-by: Daniel Mack <daniel@caiaq.de>
Cc: Andy Green <andy@warmcat.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Tested on actual hardware using the g_ether and g_serial gadget drivers.
Signed-off-by: Magnus Lilja <lilja.magnus@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
The Eyebot robot needs the OTG port in host mode on the smartbot.
Add a new board definition so we can select the usb host/device
mode at boot with the mx31moboard_baseboard boot parameter.
Signed-off-by: Philippe Rétornaz <philippe.retornaz@epfl.ch>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
In preparation for a new robot which needs the
OTG port as host.
This moves the OTG device registration into board
initialisation.
Signed-off-by: Philippe Rétornaz <philippe.retornaz@epfl.ch>
Acked-by: Valentin Longchamp <valentin.longchamp@epfl.ch>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Setup the pad with correct pull-up/down before doing the reset.
Assert the PHY enable signal so the reset is really done.
Signed-off-by: Philippe Rétornaz <philippe.retornaz@epfl.ch>
Acked-by: Valentin Longchamp <valentin.longchamp@epfl.ch>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This patch enables usb gadget for freescale mx51 babbage hw. By default,
the OTG port will be in device mode. To put the OTG port into Host mode,
pass "otg_mode=host" in the exec command.
This patch applies to 2.6.34-rc7.
Signed-off-by: Dinh Nguyen <Dinh.Nguyen@freescale.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
For power management reasons, pll2 should be used to source the USBOH3
clock for mx51. PLL3 can be completely gated off when USB is not used.
This patch applies to 2.6.34-rc7.
Signed-off-by: Dinh Nguyen <Dinh.Nguyen@freescale.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Since it is finally used on the handbot as a configuration input for
the translator.
Signed-off-by: Valentin Longchamp <valentin.longchamp@epfl.ch>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Update mx51_defconfig to include USB EHCI by default.
This patch applies to 2.6.34-rc6.
Signed-off-by: Dinh Nguyen <Dinh.Nguyen@freescale.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This patch adds USB HW initializiation code to /plat-mxc/ehci.c.
-Sets some specific PHY settings
Renames mxc_set_usbcontrol to mxc_initialize_usb_hw.
Adds new register bit defines for the USB HW on Freescale
SoCs.
This patch applies to 2.6.34-rc6.
Signed-off-by: Dinh Nguyen <Dinh.Nguyen@freescale.com>
Reviewed-by: Daniel Mack <daniel@caiaq.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This patch enables USB host functionality for Host1 and OTG port on
Freescale MX51 Babbage HW. This patch contains the board specific
HW initialization of the USB HW.
This patch applies to 2.6.34-rc6.
Signed-off-by: Dinh Nguyen <Dinh.Nguyen@freescale.com>
Reviewed-by: Daniel Mack <daniel@caiaq.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This patch is part of enabling USB for Freescale MX51 Babbage HW. This
patch adds device structures for USB Host1 and OTG port, and adds
clocking information for USB HW.
This patch applies to 2.6.34-rc6.
Signed-off-by: Dinh Nguyen <Dinh.Nguyen@freescale.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This patch is part of enabling USB for Freescale MX51 Babbage HW. This
patch updates the iomux pins for USB, and gpio line for reset the
USB hub on the MX51 Babbage HW.
This patch applies to 2.6.34-rc6.
Signed-off-by: Dinh Nguyen <Dinh.Nguyen@freescale.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Commit "mxc: Change gpt timer code to be more generic by using V2
instead of MX3" forgot to replace one occurence causing a build
failure.
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Cc: Amit Kucheria <amit.kucheria@canonical.com>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Replace mx3_ with v2_ since the register layout is the same for all SoCs using
version 2 of the timer (mx25, mx31, mx37 and now mx51)
Signed-off-by: Amit Kucheria <amit.kucheria@canonical.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
MX3 SoCs have a silicon bug which corrupts CRC calculation of
multi-block transfers when connected SDIO peripheral doesn't drive the
BUSY line as required by the specs.
One way to prevent this is to only allow 1-bit transfers.
Another way is playing tricks with the DMA engine, but this isn't
mainline yet. So for now, we live with the performance drawback of 1-bit
transfers until a nicer solution is found.
This patch introduces a new host controller callback 'init_card' which
is for now only called from mmc_sdio_init_card().
Signed-off-by: Daniel Mack <daniel@caiaq.de>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Volker Ernst <volker.ernst@txtr.com>
Cc: Jiri Kosina <jkosina@suse.cz>
Cc: Michał Mirosław <mirqus@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Be more verbose on error messages and add one debug message.
Signed-off-by: Daniel Mack <daniel@caiaq.de>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Volker Ernst <volker.ernst@txtr.com>
Cc: Jiri Kosina <jkosina@suse.cz>
Cc: Michał Mirosław <mirqus@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
On i.MX21 SoCs, if the NFC_CONFIG1:NFC_INT_MASK bit is set,
NFC_CONFIG2:NFC_INT always reads out zero, even if an
operation is completed. This patch uses enable_irq and
disable_irq_nosync instead of NFC_CONFIG1:NFC_INT_MASK to
mask NFC interrupts. This allows NFC_CONFIG2:NFC_INT to also
be used to detect operation completion on i.MX21.
The i.MX21 NFC does not signal reset completion using
NFC_CONFIG1:NFC_INT_MASK, so instead reset completion is
tested by checking if NFC_CONFIG2 becomes 0.
Signed-off-by: Ivo Clarysse <ivo.clarysse@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This patch allows the mxc_nand driver to reset the NAND
flash controller. NFC registers are (re-)set after
completion of the reset, as a reset will have reverted
the NFC registers to their default values.
Signed-off-by: Ivo Clarysse <ivo.clarysse@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This patch adds support for SoC build-in RTC device on litekit board.
Signed-off-by: Vladimir Zapolskiy <vzapolskiy@gmail.com>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This patch adds support for build-in RTC device found on
Freescale imx31 and imx35 SoCs.
Signed-off-by: Vladimir Zapolskiy <vzapolskiy@gmail.com>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* 'bugfixes' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6:
NFSv4: fix delegated locking
NFS: Ensure that the WRITE and COMMIT RPC calls are always uninterruptible
NFS: Fix a race with the new commit code
NFS: Ensure that writeback_single_inode() calls write_inode() when syncing
NFS: Fix the mode calculation in nfs_find_open_context
NFSv4: Fall back to ordinary lookup if nfs4_atomic_open() returns EISDIR
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6:
sparc64: Add some more commentary to __raw_local_irq_save()
sparc64: Fix memory leak in pci_register_iommu_region().
sparc64: Add kmemleak annotation to sun4v_build_virq()
sparc64: Support kmemleak.
sparc64: Add function graph tracer support.
sparc64: Give a stack frame to the ftrace call sites.
sparc64: Use a seperate counter for timer interrupts and NMI checks, like x86.
sparc64: Remove profiling from some low-level bits.
sparc64: Kill unnecessary static on local var in ftrace_call_replace().
sparc64: Kill CONFIG_STACK_DEBUG code.
sparc64: Add HAVE_FUNCTION_TRACE_MCOUNT_TEST and tidy up.
sparc64: Adjust __raw_local_irq_save() to cooperate in NMIs.
sparc64: Use kstack_valid() in die_if_kernel().
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (25 commits)
smc91c92_cs: define multicast_table as unsigned char
can: avoids a false warning
e1000e: stop cleaning when we reach tx_ring->next_to_use
igb: restrict WoL for 82576 ET2 Quad Port Server Adapter
virtio_net: missing sg_init_table
Revert "tcp: Set CHECKSUM_UNNECESSARY in tcp_init_nondata_skb"
iwlwifi: need check for valid qos packet before free
tcp: Set CHECKSUM_UNNECESSARY in tcp_init_nondata_skb
udp: fix for unicast RX path optimization
myri10ge: fix rx_pause in myri10ge_set_pauseparam
net: corrected documentation for hardware time stamping
stmmac: use resource_size()
x.25 attempts to negotiate invalid throughput
x25: Patch to fix bug 15678 - x25 accesses fields beyond end of packet.
bridge: Fix IGMP3 report parsing
cnic: Fix crash during bnx2x MTU change.
qlcnic: fix set mac addr
r6040: fix r6040_multicast_list
vhost-net: fix vq_memory_access_ok error checking
ath9k: fix double calls to ath_radio_enable
...
smc91c92_cs:
* define multicast_table as unsigned char
* remove unnecessary "#ifndef final_version"
Signed-off-by: Ken Kawasaki <ken_kawasaki@spring.nifty.jp>
Signed-off-by: David S. Miller <davem@davemloft.net>
At this point optlen == sizeof(sfilter) but some compilers are dumb.
Reported-by: Németh Márton <nm127@freemail.h
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Acked-by: Oliver Hartkopp <oliver@hartkopp.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Tx ring buffers after tx_ring->next_to_use are volatile and could
change, possibly causing a crash. Stop cleaning when we hit
tx_ring->next_to_use.
Signed-off-by: Terry Loftin <terry.loftin@hp.com>
Acked-by: Bruce Allan <bruce.w.allan@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Restrict Wake-on-LAN to first port on 82576 ET2 quad port NICs, as it is
only supported there.
Signed-off-by: Stefan Assmann <sassmann@redhat.com>
Acked-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Found by kmemleak.
If request_resource() fails, we leak the struct resource we
allocated to represent the IOMMU mapping area.
This actually happens on sun4v machines because the IOMEM area is only
reported sans the IOMMU region, unlike all previous systems. I'll
need to fix that at some point, but for now fix the leak.
Signed-off-by: David S. Miller <davem@davemloft.net>
The only reference we store to this memory is in the form of a
physical address, so kmemleak can't see it.
Add a kmemleak_not_leak() annotation.
It's probably useful to be able to look at a dump of these things
either via debugfs or similar, and thus we could at some point store
them in some kind of table and therefore get rid of this annotation.
Signed-off-by: David S. Miller <davem@davemloft.net>
It's the only way we'll be able to implement the function
graph tracer properly.
A positive is that we no longer have to worry about the
linker over-optimizing the tail call, since we don't
use a tail call any more.
Signed-off-by: David S. Miller <davem@davemloft.net>
This keeps us from having to use kstat_irqs_cpu() from the NMI handler,
the former of which is a profiled function.
Instead we use a currently empty slot in the cpu_data
Signed-off-by: David S. Miller <davem@davemloft.net>
These include the timer implementation, perf events support, and the
performance counter register (pcr) programming layer.
Signed-off-by: David S. Miller <davem@davemloft.net>
Check function_trace_stop at ftrace_caller
Toss mcount_call and dummy call of ftrace_stub, unnecessary.
Document problems we'll have if the final kernel image link
ever turns on relaxation.
Properly size 'ftrace_call' so it looks right when inspecting
instructions under gdb et al.
Signed-off-by: David S. Miller <davem@davemloft.net>
If we are in an NMI then doing a plain raw_local_irq_disable() will
write PIL_NORMAL_MAX into %pil, which is lower than PIL_NMI, and thus
we'll re-enable NMIs and recurse.
Doing a simple:
%pil = %pil | PIL_NORMAL_MAX
does what we want, if we're already at PIL_NMI (15) we leave it at
that setting, else we set it to PIL_NORMAL_MAX (14).
This should get the function tracer working on sparc64.
Signed-off-by: David S. Miller <davem@davemloft.net>
This gets rid of a local function (is_kernel_stack()) which tries to
do the same thing, yet poorly in that it doesn't handle IRQ stacks
properly.
Signed-off-by: David S. Miller <davem@davemloft.net>
Add missing sg_init_table for sg_set_buf in virtio_net which
induced in defer skb patch.
Reported-by: Thomas Müller <thomas@mathtm.de>
Tested-by: Thomas Müller <thomas@mathtm.de>
Signed-off-by: Shirley Ma <xma@us.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
