PATA arasan driver expects the clock to be set to 166 MHz for proper
functioning. This patch sets clk to 166 MHz in probe.
Signed-off-by: Vipul Kumar Samar <vipulkumar.samar@st.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
commit 6b66d95895 didn't handle SATA PMP
case in ata_acpi_bind_device and will cause a NULL ptr dereference when
user attached a SATA drive to the PMP port. Fix this by checking PMP
support.
This bug is reported by Dan van der Ster in the following bugzilla page:
https://bugzilla.kernel.org/show_bug.cgi?id=48211
Reported-by: Dan van der Ster <dan@vanderster.com>
Tested-by: Dan van der Ster <dan@vanderster.com>
Signed-off-by: Aaron Lu <aaron.lu@intel.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Tested-by: Simon <tangouniform@sbcglobal.net>
Signed-off-by: Dimitris Papastamos <dp@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Cc: stable@vger.kernel.org
It seems git has been getting confused by the very similar contexts
for the speaker DAIs and has been applying patches to the wrong places
causing all sorts of confusion. Fix this up by hand.
Reported-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Daniel writes:
Just a few small things to fix regressions, somehow all patches from Jani:
- Fix dpms confusion about which platforms support intermediate modes on
vga.
- Revert the "ignore vbt for eDP bpc" patch, it breaks machines. This will
annoy mbp retina owners again, but windows machines seem to _really_
depend upon this. We can try to quirk the mbp retinas again in 3.8 and
backport the patch.
- Fix connector leaks when the sdvo setup failed, resulted in an OOPS
later on when trying to probe that connector (with it's encoder kfree'd
already).
* 'drm-intel-fixes' of git://people.freedesktop.org/~danvet/drm-intel:
drm/i915: do not ignore eDP bpc settings from vbt
drm/i915/sdvo: clean up connectors on intel_sdvo_init() failures
drm/i915/crt: fix DPMS standby and suspend mode handling
It is unnecessary to disable preemption explicitly while calling
copy_highpage(). Because copy_highpage() will do it again through
kmap_atomic/kunmap_atomic.
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
The TTM page can be allocated from high memory. In such case it is
wrong to use the page_address(page) as the virtual address for the high memory
page.
bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=50241
Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
Cc: stable@vger.kernel.org
Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
copy_to_user() returns the number of bytes remaining to be copied, but
we want to return a negative error code here. I fixed a couple of these
last year, but I missed this one.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Check (ha->addr == dev->dev_addr) is always true because dev_addr_init()
sets this. Correct the check to behave properly on addr removal.
Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
Currently if a socket was repaired with a few packet in a write queue,
a kernel bug may be triggered:
kernel BUG at net/ipv4/tcp_output.c:2330!
RIP: 0010:[<ffffffff8155784f>] tcp_retransmit_skb+0x5ff/0x610
According to the initial realization v3.4-rc2-963-gc0e88ff,
all skb-s should look like already posted. This patch fixes code
according with this sentence.
Here are three points, which were not done in the initial patch:
1. A tcp send head should not be changed
2. Initialize TSO state of a skb
3. Reset the retransmission time
This patch moves logic from tcp_sendmsg to tcp_write_xmit. A packet
passes the ussual way, but isn't sent to network. This patch solves
all described problems and handles tcp_sendpages.
Cc: Pavel Emelyanov <xemul@parallels.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>
Cc: James Morris <jmorris@namei.org>
Cc: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org>
Cc: Patrick McHardy <kaber@trash.net>
Signed-off-by: Andrey Vagin <avagin@openvz.org>
Acked-by: Pavel Emelyanov <xemul@parallels.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Add the host1x node along with its children to the Tegra30 DTSI. Board-
specific DTS files are expected to enable the available outputs and
complement the device tree with data specific to the hardware.
Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Add the host1x node along with its children to the Tegra20 DTSI. Board-
specific DTS files are expected to enable the available outputs and
complement the device tree with data specific to the hardware.
Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Nvidia's Tegra20 have the SPI (SFLASH) controller to
interface with spi flash device which is used for system
boot. Add DT entry for this controller.
Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
[swarren: move sflash node to keep file sorted]
Signed-off-by: Stephen Warren <swarren@nvidia.com>
The Harmony board has an ON Semiconductors NCT1008 temperature sensor
connected to the DVC bus. It can be used to monitor the ambient (local)
and on-die (remote) temperatures.
Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
Tested-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
The Tamonten SOM has an ON Semiconductor NCT1008 connected to the DVC
bus which is used to measure the ambient (local) temperature as well as
the on-die (remote) temperature.
Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
The Harmony board has an Analog Devices ADT7461 temperature sensor
connected to the DVC bus. It can be used to monitor the ambient (local)
and on-die (remote) temperatures.
Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
Tested-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
These properties are already set by the tegra20-tamonten.dtsi, so they
don't need to be repeated.
Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
This commit allows the I2C2 controller on Tegra20 to be routed either to
the DDC or the PTA pin group at runtime. On Tamonten this allows the I2C
bus to be used for the DDC of the HDMI connector or to access I2C chips
on the carrier board.
Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Enable SLINK4 and connected device in Tegra30 based
platform Cardhu.
Setting maximum spi frequency to 25MHz.
SPI serial flash is connected on CS1 of SLINK4 on
cardhu platform.
Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
[swarren: swapped reg/compatible order to be consistent]
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Add slink controller details in the dts file of
Tegra20 and Tegra30.
Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Tegra 2's I2C2 controller can be routed to either the PTA
or DDC pin group on Ventana. So:
- Remove the HDMI function definition of pta pingroup
- Define child i2c adapters(ddc & pta) for I2C2 controller
Signed-off-by: Mark Zhang <markz@nvidia.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Configure pinmux as required for WiFi.
Enable the SDHCI1 controller for a02 and a04 board, which is connected to the
WiFi module.
For now, always enable the regulator that provides power to the Wifi module.
Signed-off-by: Wei Ni <wni@nvidia.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Configure pinmux as required for WiFi.
Enable the SDHCI1 controller, which is connectted to the WiFi module.
Signed-off-by: Wei Ni <wni@nvidia.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Enable the SDHCI1 controller. This is connected to the WiFi module.
Signed-off-by: Wei Ni <wni@nvidia.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Setup the clock parents for the two display controllers and HDMI.
Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Add the OF_DEV_AUXDATA table entries required to associate the proper
names with host1x and its children. In turn, this allows the devices to
find the required clocks.
Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Extend the pll_d frequency table with a few entries to support common
HDMI and LVDS display modes and setup the clock parents for the two
display controllers and HDMI.
Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Add the OF_DEV_AUXDATA table entries required to associate the proper
names with host1x and its children. In turn, this allows the devices to
find the required clocks.
Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
This patch adds speedo-based process identification support for Tegra30.
Signed-off-by: Danny Huang <dahuang@nvidia.com>
[swarren s/Tegra3/Tegra30/ in log print,
s/T30/Tegra30/ in commit description]
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Detect CPU and core process ID by checking speedo corner tables.
This can provide a more accurate process ID.
Signed-off-by: Danny Huang <dahuang@nvidia.com>
[swarren s/Tegra2/Tegra20/ in log print]
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Change the spare fuse base from a definition to a variable.
It provides flexibilty to read spare fuse on different chip.
Signed-off-by: Danny Huang <dahuang@nvidia.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Users of GCC 4.7 have reported compiler errors due to having inline
applied to function declarations in clk-provider.h. The definitions
exist in drivers/clk/clk.c. An example error:
In file included from arch/arm/mach-omap2/clockdomain.c:25:0:
arch/arm/mach-omap2/clockdomain.c: In function ‘clkdm_clk_disable’:
include/linux/clk-provider.h:338:12: error: inlining failed in call to always_inline ‘__clk_get_enable_count’: function body not available
arch/arm/mach-omap2/clockdomain.c:1001:28: error: called from here
make[1]: *** [arch/arm/mach-omap2/clockdomain.o] Error 1
make: *** [arch/arm/mach-omap2] Error 2
This patch removes the use of inline from include/linux/clk-provider.h
but keeps the function definitions in drivers/clk/clk.c as inlined since
they are one-liners.
Signed-off-by: Igor Mazanov <i.mazanov@gmail.com>
Acked-by: Paul Walmsley <paul@pwsan.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
[mturquette@linaro.org: improved subject, added changelog]
but only fixed now because no one gave enough material for debugging.
Anyway, these fix the problem that sometimes after a power cut the
file-system is not mountable with the following symptom:
grab_empty_leb: could not find an empty LEB
The fixes make the file-system mountable again.
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Merge tag 'upstream-3.7-rc6' of git://git.infradead.org/linux-ubifs
Pull UBIFS fixes from Artem Bityutskiy:
"Two patches which fix a problem reported by several people in the
past, but only fixed now because no one gave enough material for
debugging.
Anyway, these fix the problem that sometimes after a power cut the
file-system is not mountable with the following symptom:
grab_empty_leb: could not find an empty LEB
The fixes make the file-system mountable again."
* tag 'upstream-3.7-rc6' of git://git.infradead.org/linux-ubifs:
UBIFS: fix mounting problems after power cuts
UBIFS: introduce categorized lprops counter
kernel booting on a APEI-enabled machines w/ CONFIG_PSTORE_CONSOLE=y (this
is N by default, though).
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Merge tag 'for-v3.7-fixes' of git://git.infradead.org/users/cbou/linux-pstore
Pull pstore fix from Anton Vorontsov:
"A small fixup for the persistent storage subsystem. The bug can
prevent kernel booting on a APEI-enabled machines w/ PSTORE_CONSOLE=y
(this is N by default, though)."
* tag 'for-v3.7-fixes' of git://git.infradead.org/users/cbou/linux-pstore:
pstore: Fix NULL pointer dereference in console writes
Pill i2c fixes from Jean Delvare.
Well, "fixes".. The biggest patch here is actually Jan marking Wolfram
Sang as the main i2c subsystem maintainer, with Jan staying on as the PC
controller maintainer.
* 'i2c-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging:
i2c-mux-pinctrl: Fix probe error path
MAINTAINERS: i2c: 7 years, this is it
A few fixes for teardown issues that will be rarely seen, plus a fix for
a silly bug in regulator_is_supported_voltage() which shows how often
the answer to the question should be false.
The supported voltage commit is very new as I just edited to add a Cc to
stable, the code itself has been in -next.
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Merge tag 'regulator-3.7' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator
Pull regulator fixes from Mark Brown:
"A few fixes for teardown issues that will be rarely seen, plus a fix
for a silly bug in regulator_is_supported_voltage() which shows how
often the answer to the question should be false.
The supported voltage commit is very new as I just edited to add a Cc
to stable, the code itself has been in -next."
* tag 'regulator-3.7' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator:
regulator: fix voltage check in regulator_is_supported_voltage()
regulator: core: Avoid deadlock when regulator_register fails
Regulator: core: Unregister when gpio request fails.
The only large LOC is seen in WM5102 driver, just writing a bunch of
register updates, but the actual code change is small.
Other than that, all small fixes suitable for rc6.
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Merge tag 'sound-3.7' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"The only large LOC is seen in WM5102 driver, just writing a bunch of
register updates, but the actual code change is small. Other than
that, all small fixes suitable for rc6."
* tag 'sound-3.7' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
ALSA: usb-audio: Fix mutex deadlock at disconnection
ALSA: fm801: precedence bug in snd_fm801_tea575x_get_pins()
ALSA: es1968: precedence bug in snd_es1968_tea575x_get_pins()
ALSA: hda - Add a missing quirk entry for iMac 9,1
ASoC: core: Double control update err for snd_soc_put_volsw_sx
ASoC: dapm: Use card_list during DAPM shutdown
ASoC: cs42l52: fix the return value of cs42l52_set_fmt()
ASoC: bells: Correct type in sub speaker DAI name for WM5102
ASoC: wm8978: pll incorrectly configured when codec is master
ASoC: mxs-saif: Fix channel swap for 24-bit format
ASoC: bells: Select WM1250-EV1 Springbank audio I/O module
ASoC: bells: Add missing select of WM0010
ASoC: mxs-saif: Add MODULE_ALIAS
ASoC: wm5102: Write register value corrections after SYSCLK is enabled
Commit 13d782f ("sctp: Make the proc files per network namespace.")
changed the /proc/net/sctp/ struct file_operations opener functions to
use single_open_net() and seq_open_net().
Avoid leaking memory by using single_release_net() and seq_release_net()
as the release functions.
Discovered with Trinity (the syscall fuzzer).
Signed-off-by: Tommi Rantala <tt.rantala@gmail.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This resolves a nontrivial conflict where the omap_prcm_restart
is removed in one branch but another use is added in another
branch.
Conflicts:
arch/arm/mach-omap2/cm33xx.c
arch/arm/mach-omap2/io.c
arch/arm/mach-omap2/prm_common.c
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
and clean up related improvment to the SoC detection.
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Merge tag 'omap-for-v3.8/cleanup-fixes-part2-v2-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into next/cleanup
From Tony Lindgren <tony@atomide.com>:
One build fix for recent clean up when CONFIG_PM is not set
and clean up related improvment to the SoC detection.
* tag 'omap-for-v3.8/cleanup-fixes-part2-v2-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
ARM: OMAP4: ID: Improve features detection and check
ARM: OMAP: Fix compile for OMAP_PM_NOOP if PM is not selected
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
various .dts files, and timer related changes to allow
configuring the timer via device tree.
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Merge tag 'omap-for-v3.8/dt-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into next/dt
From Tony Lindgren <tony@atomide.com>:
Device tree related changes for omaps updating the
various .dts files, and timer related changes to allow
configuring the timer via device tree.
* tag 'omap-for-v3.8/dt-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap: (48 commits)
usb: musb: dsps: dt binding - add resources, example
ARM: dts: omap4-sdp: Add pinmux configuration for HDMI
ARM: dts: omap4-panda: Add pinmux configuration for HDMI
ARM: dts: Makefile: Add the am335x-evmsk target in dtbs list
ARM: dts: AM33XX: Add usbss node
ARM: dts: AM33XX: Add push-buttons device tree data to am335x-evmsk
ARM: dts: AM33XX: Add pinmux configuration for gpio-keys to EVMSK
ARM: dts: AM33XX: Add user-leds device tree data to am335x-evmsk
ARM: dts: AM33XX: Add pinmux configuration for gpio-leds to EVMSK
ARM: dts: AM33XX: Add user-leds device tree data to am335x-bone
ARM: dts: AM33XX: Add pinmux configuration for user-leds to BONE
ARM: dts: AM33XX: Add volume-keys device tree data to am335x-evm
ARM: dts: AM33XX: Add pinmux configuration for volume-keys to EVM
ARM: dts: AM33XX: Add matrix keypad device tree data to am335x-evm
ARM: dts: AM33XX: Add pinmux configuration for matrix keypad to EVM
ARM: dts: omap5-evm: LPDDR2 memory device details for EVM
ARM: dts: omap5: EMIF device tree data for OMAP5 boards
ARM: dts: omap5-evm: Fix size of memory defined for EVM
ARM: OMAP2+: Add device-tree support for 32kHz counter
ARM: OMAP: Add DT support for timer driver
...
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Second set of OMAP PRCM cleanups for 3.8.
These patches remove the use of omap_prcm_get_reset_sources() from the
OMAP watchdog driver, and remove mach-omap2/prcm.c and
plat-omap/include/plat/prcm.h.
Basic test logs for this branch on top of Tony's cleanup-prcm branch
at commit 7fc54fd308 are here:
http://www.pwsan.com/omap/testlogs/prcm_cleanup_b_3.8/20121108151646/
However, cleanup-prcm at 7fc54fd3 does not include some fixes
that are needed for a successful test. With several reverts,
fixes, and workarounds applied, the following test logs were
obtained:
http://www.pwsan.com/omap/testlogs/TEST_prcm_cleanup_b_3.8/20121108151930/
which indicate that the series tests cleanly.
This second pull request updates one of the patches which broke
with rmk's allnoconfigs, and also updates the tag description to
indicate that 7fc54fd3 is building cleanly here.
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Merge tag 'omap-for-v3.8/cleanup-prcm-part2-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into next/cleanup
From Tony Lindgren <tony@atomide.com>:
More PRCM cleanups via Paul Walmsley <paul@pwsan.com>:
Second set of OMAP PRCM cleanups for 3.8.
These patches remove the use of omap_prcm_get_reset_sources() from the
OMAP watchdog driver, and remove mach-omap2/prcm.c and
plat-omap/include/plat/prcm.h.
Basic test logs for this branch on top of Tony's cleanup-prcm branch
at commit 7fc54fd308 are here:
http://www.pwsan.com/omap/testlogs/prcm_cleanup_b_3.8/20121108151646/
However, cleanup-prcm at 7fc54fd3 does not include some fixes
that are needed for a successful test. With several reverts,
fixes, and workarounds applied, the following test logs were
obtained:
http://www.pwsan.com/omap/testlogs/TEST_prcm_cleanup_b_3.8/20121108151930/
which indicate that the series tests cleanly.
This second pull request updates one of the patches which broke
with rmk's allnoconfigs, and also updates the tag description to
indicate that 7fc54fd3 is building cleanly here.
* tag 'omap-for-v3.8/cleanup-prcm-part2-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap: (27 commits)
ARM: OMAP2: Fix compillation error in cm_common
ARM: OMAP2+: PRCM: remove obsolete prcm.[ch]
ARM: OMAP2+: hwmod: call to _omap4_disable_module() should use the SoC-specific call
ARM: OMAP2+: PRCM: consolidate PRCM-related timeout macros
ARM: OMAP2+: PRCM: split and relocate the PRM/CM globals setup
ARM: OMAP2+: PRCM: remove omap2_cm_wait_idlest()
ARM: OMAP2+: CM/clock: convert _omap2_module_wait_ready() to use SoC-independent CM functions
ARM: OMAP2xxx: APLL/CM: convert to use omap2_cm_wait_module_ready()
ARM: OMAP2+: board files: use SoC-specific system restart functions
ARM: OMAP2+: PRCM: create SoC-specific chip restart functions
ARM: OMAP2xxx: clock: move virt_prcm_set code into clkt2xxx_virt_prcm_set.c
ARM: OMAP2xxx: clock: remove global 'dclk' variable
ARM: OMAP2/3: PRM: add SoC reset functions (using the CORE DPLL method)
ARM: OMAP2+: common: remove mach-omap2/common.c globals and map_common_io code
ARM: OMAP2+: PRCM: remove omap_prcm_get_reset_sources()
watchdog: OMAP: use standard GETBOOTSTATUS interface; use platform_data fn ptr
ARM: OMAP2+: WDT: move init; add read_reset_sources pdata function pointer
ARM: OMAP1: CGRM: fix omap1_get_reset_sources() return type
ARM: OMAP2+: PRM: create PRM reset source API for the watchdog timer driver
ARM: OMAP1: create read_reset_sources() function (for initial use by watchdog)
...
Conflicts:
arch/arm/mach-omap2/cm33xx.c
arch/arm/mach-omap2/io.c
arch/arm/mach-omap2/prm_common.c
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
support for omaps.
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Merge tag 'omap-for-v3.8/cleanup-fixes-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into next/cleanup
From: Tony Lindgren <tony@atomide.com>:
Minor fixes to the clean-up done for ARM common multi-platform
support for omaps.
* tag 'omap-for-v3.8/cleanup-fixes-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
ARM: OMAP2+: remove duplicated include from board-overo.c
ARM: OMAP: debug-leds: Use resource_size instead of hard coded macro
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
The 3215 console always has the RAW3215_FIXED flag set, which causes
raw3215_shutdown() not to wait for outstanding I/O requests if an attached
tty gets closed.
The flag however can be simply removed, so we can guarantee that all requests
belonging to the tty have been processed when the tty is closed.
However the tasklet that belongs to the 3215 device may be scheduled even if
there is no tty attached anymore, since we have a race between console and tty
processing.
Thefore unconditional tty_wakekup() in raw3215_wakeup() can cause the following
NULL pointer dereference:
3.465368 Unable to handle kernel pointer dereference at virtual kernel address (null)
3.465448 Oops: 0004 #1 SMP
3.465454 Modules linked in:
3.465459 CPU: 1 Not tainted 3.6.0 #1
3.465462 Process swapper/1 (pid: 0, task: 000000003ffa4428, ksp: 000000003ffb7ce0)
3.465466 Krnl PSW : 0404100180000000 0000000000162f86 (__wake_up+0x46/0xb8)
3.465480 R:0 T:1 IO:0 EX:0 Key:0 M:1 W:0 P:0 AS:0 CC:1 PM:0 EA:3
Krnl GPRS: fffffffffffffffe 0000000000000000 0000000000000160 0000000000000001
3.465492 0000000000000001 0000000000000004 0000000000000004 000000000096b490
3.465499 0000000000000001 0000000000000100 0000000000000001 0000000000000001
3.465506 070000003fc87d60 0000000000000160 000000003fc87d68 000000003fc87d00
3.465526 Krnl Code: 0000000000162f76: e3c0f0a80004 lg %r12,168(%r15)
0000000000162f7c: 58000370 l %r0,880
#0000000000162f80: c007ffffffff00 xilf %r0,4294967295
>0000000000162f86: ba102000 cs %r1,%r0,0(%r2)
0000000000162f8a: 1211 ltr %r1,%r1
0000000000162f8c: a774002f brc 7,162fea
0000000000162f90: b904002d lgr %r2,%r13
0000000000162f94: b904003a lgr %r3,%r10
3.465597 Call Trace:
3.465599 (<0400000000000000> 0x400000000000000)
3.465602 <000000000048c77e> raw3215_wakeup+0x2e/0x40
3.465607 <0000000000134d66> tasklet_action+0x96/0x168
3.465612 <000000000013423c> __do_softirq+0xd8/0x21c
3.465615 <0000000000134678> irq_exit+0xa8/0xac
3.465617 <000000000046c232> do_IRQ+0x182/0x248
3.465621 <00000000005c8296> io_return+0x0/0x8
3.465625 <00000000005c7cac> vtime_stop_cpu+0x4c/0xb8
3.465629 (<0000000000194e06> tick_nohz_idle_enter+0x4e/0x74)
3.465633 <0000000000104760> cpu_idle+0x170/0x184
3.465636 <00000000005b5182> smp_start_secondary+0xd6/0xe0
3.465641 <00000000005c86be> restart_int_handler+0x56/0x6c
3.465643 <0000000000000000> 0x0
3.465645 Last Breaking-Event-Address:
3.465647 <0000000000403136> tty_wakeup+0x46/0x98
3.465652
3.465654 Kernel panic - not syncing: Fatal exception in interrupt
01: HCPGIR450W CP entered; disabled wait PSW 00020001 80000000 00000000 0010F63C
The easiest solution is simply to check if tty is NULL in the tasklet.
If it is NULL nothing is to do (no tty attached), otherwise tty_wakeup()
can be called, since we hold a reference to the tty.
This is not nice... but it is a small patch and it works.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
