In UP and non-preempt respectively, the spinlocks and preemption
disable/enable points are stubbed out entirely, because there is no
regular code that can ever hit the kind of concurrency they are meant to
protect against.
However, while there is no regular code that can cause scheduling, we
_do_ end up having some exceptional (literally!) code that can do so,
and that we need to make sure does not ever get moved into the critical
region by the compiler.
In particular, get_user() and put_user() is generally implemented as
inline asm statements (even if the inline asm may then make a call
instruction to call out-of-line), and can obviously cause a page fault
and IO as a result. If that inline asm has been scheduled into the
middle of a preemption-safe (or spinlock-protected) code region, we
obviously lose.
Now, admittedly this is *very* unlikely to actually ever happen, and
we've not seen examples of actual bugs related to this. But partly
exactly because it's so hard to trigger and the resulting bug is so
subtle, we should be extra careful to get this right.
So make sure that even when preemption is disabled, and we don't have to
generate any actual *code* to explicitly tell the system that we are in
a preemption-disabled region, we need to at least tell the compiler not
to move things around the critical region.
This patch grew out of the same discussion that caused commits
79e5f05edc ("ARC: Add implicit compiler barrier to raw_local_irq*
functions") and 3e2e0d2c22 ("tile: comment assumption about
__insn_mtspr for <asm/irqflags.h>") to come about.
Note for stable: use discretion when/if applying this. As mentioned,
this bug may never have actually bitten anybody, and gcc may never have
done the required code motion for it to possibly ever trigger in
practice.
Cc: stable@vger.kernel.org
Cc: Steven Rostedt <srostedt@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Commit 90ba9b1986 (tcp: tcp_make_synack() can use alloc_skb())
broke certain SELinux/NetLabel configurations by no longer correctly
assigning the sock to the outgoing SYNACK packet.
Cost of atomic operations on the LISTEN socket is quite big,
and we would like it to happen only if really needed.
This patch introduces a new security_ops->skb_owned_by() method,
that is a void operation unless selinux is active.
Reported-by: Miroslav Vadkerti <mvadkert@redhat.com>
Diagnosed-by: Paul Moore <pmoore@redhat.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: linux-security-module@vger.kernel.org
Acked-by: James Morris <james.l.morris@oracle.com>
Tested-by: Paul Moore <pmoore@redhat.com>
Acked-by: Paul Moore <pmoore@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch introduces an UAPI header for the SCTP protocol,
so that we can facilitate the maintenance and development of
user land applications or libraries, in particular in terms
of header synchronization.
To not break compatibility, some fragments from lksctp-tools'
netinet/sctp.h have been carefully included, while taking care
that neither kernel nor user land breaks, so both compile fine
with this change (for lksctp-tools I tested with the old
netinet/sctp.h header and with a newly adapted one that includes
the uapi sctp header). lksctp-tools smoke test run through
successfully as well in both cases.
Suggested-by: Neil Horman <nhorman@tuxdriver.com>
Cc: Neil Horman <nhorman@tuxdriver.com>
Cc: Vlad Yasevich <vyasevich@gmail.com>
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This branch contains most fixes and enhancements to the Tegra common
clock driver. The main new feature is a driver for Tegra114, which
coupled with later device tree changes enables many devices on that
chip, such as MMC, I2C, etc.
This branch depends on a patch in:
git://git.linaro.org/people/mturquette/linux.git clk-for-3.10
Mike has stated that this branch is stable, and is aware of this
dependency and merge.
Mike's branch is based on v3.9-rc3, which includes a USB change which
causes problems on Tegra. That problem was fixed in v3.9-rc4. Hence,
this branch pulls in v3.9-rc4 to ensure bisectability as much as
possible.
This branch is based on v3.9-rc4, followed by a merge of previous Tegra
"soc" pull request, followed by a merge of clk-for-3.10.
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Merge tag 'tegra-for-3.10-clk' of git://git.kernel.org/pub/scm/linux/kernel/git/swarren/linux-tegra into next/drivers
From Stephen Warren <swarren@wwwdotorg.org>:
ARM: tegra: clock driver development
This branch contains most fixes and enhancements to the Tegra common
clock driver. The main new feature is a driver for Tegra114, which
coupled with later device tree changes enables many devices on that
chip, such as MMC, I2C, etc.
This branch depends on a patch in:
git://git.linaro.org/people/mturquette/linux.git clk-for-3.10
Mike has stated that this branch is stable, and is aware of this
dependency and merge.
Mike's branch is based on v3.9-rc3, which includes a USB change which
causes problems on Tegra. That problem was fixed in v3.9-rc4. Hence,
this branch pulls in v3.9-rc4 to ensure bisectability as much as
possible.
This branch is based on v3.9-rc4, followed by a merge of previous Tegra
"soc" pull request, followed by a merge of clk-for-3.10.
* tag 'tegra-for-3.10-clk' of git://git.kernel.org/pub/scm/linux/kernel/git/swarren/linux-tegra:
clk: tegra: fix enum tegra114_clk to match binding
clk: tegra: Remove forced clk_enable of uartd
ARM: dt: Add references to tegra_car clocks
clk: tegra: devicetree match for nvidia,tegra114-car
clk: tegra: Implement clocks for Tegra114
ARM: tegra: Define Tegra114 CAR binding
clk: tegra: Workaround for Tegra114 MSENC problem
clk: tegra: Add flags to tegra_clk_periph()
clk: tegra: Add new fields and PLL types for Tegra114
clk: tegra: move from a lock bit idx to a lock mask
clk: tegra: Add PLL post divider table
clk: tegra: introduce TEGRA_PLL_HAS_LOCK_ENABLE
clk: tegra: Add TEGRA_PLL_BYPASS flag
clk: tegra: Refactor PLL programming code
clk: tegra: provide dummy cpu car ops
clk: tegra: defer application of init table
clk: tegra: Fix cdev1 and cdev2 IDs
clk: tegra: Make gr2d and gr3d clocks children of pll_c
clk: tegra: Export peripheral reset functions
clk: tegra: Fix periph_clk_to_bit macro
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
This is a snapshot of the stable clk branch at
git://git.linaro.org/people/mturquette/linux.git clk-for-3.10
which is a dependency for the tegra clock changes.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
This branch converts Tegra to support multi-platform/single-zImage.
One header is made accessible to drivers. The earlyprintk implementation
is moved to the multi-platform location. Some Kconfig changes are made
to enable multi-platform. Some dead files are deleted.
The APIs exposed in the now-global tegra-powergate.h should be replaced
with standard reset and power domain APIs in the future.
This branch is based on (part of) the previous soc pull request.
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Merge tag 'tegra-for-3.10-multiplatform' of git://git.kernel.org/pub/scm/linux/kernel/git/swarren/linux-tegra into next/multiplatform
From Stephen Warren <swarren@wwwdotorg.org>:
ARM: tegra: multi-platform conversion
This branch converts Tegra to support multi-platform/single-zImage.
One header is made accessible to drivers. The earlyprintk implementation
is moved to the multi-platform location. Some Kconfig changes are made
to enable multi-platform. Some dead files are deleted.
The APIs exposed in the now-global tegra-powergate.h should be replaced
with standard reset and power domain APIs in the future.
This branch is based on (part of) the previous soc pull request.
* tag 'tegra-for-3.10-multiplatform' of git://git.kernel.org/pub/scm/linux/kernel/git/swarren/linux-tegra:
ARM: tegra: convert to multi-platform
ARM: tegra: move <mach/powergate.h> to <linux/tegra-powergate.h>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
information. Also enable few HW errata workarounds for omap4.
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Merge tag 'omap-for-v3.10/soc-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into next/soc
From Tony Lindgren <tony@atomide.com>:
Changes needed for enabling SOC_BUS for the SoC revision
information. Also enable few HW errata workarounds for omap4.
* tag 'omap-for-v3.10/soc-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap: (236 commits)
ARM: OMAP4: Enable fix for Cortex-A9 erratas
ARM: OMAP2+: Export SoC information to userspace
ARM: OMAP2+: SoC name and revision unification
ARM: OMAP2+: Move common part of late init into common function
Includes an update to Linux 3.9-rc6
Conflicts:
arch/arm/mach-omap2/cclock44xx_data.c
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
From Linus Walleij <linus.walleij@linaro.org>:
Ux500 multiplatform support. This tag builds upon the MFD-specific base
tag "ux500-multiplatform-mfd". This removes all <mach/*> dependencies
and makes the ux500 fully multi-platform.
* tag 'ux500-multiplatform-asoc' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-stericsson:
ARM: ux500: build hotplug.o for ARMv7-a
ARM: ux500: move to multiplatform
ARM: ux500: make remaining headers local
ARM: ux500: make irqs.h local to platform
ARM: ux500: get rid of <mach/[hardware|db8500-regs].h>
staging: ste_rmi4: kill platform_data hack
ARM: ux500: move mach/msp.h to <linux/platform_data/*>
clk: ux500: pass clock base adresses in init call
ARM: ux500: make debug macro stand-alone
ARM: ux500: move debugmacro to debug includes
ARM: ux500: split out prcmu initialization
mfd: db8500-prcmu: drop unused includes
ARM: ux500: move PM-related PRCMU functions to machine
mfd: db8500-prcmu: get base address from resource
mfd: prcmu: pass a base and size with the early initcall
Conflicts:
arch/arm/Kconfig
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
* Clean up timer code and move it into drivers/clocksource
* Clean up icoll code and move it into drivers/irqchip
* Clean up clock code to not include <mach/*> headers
* Clean up rtc-stmp3xxx, mxs-lradc and mxs-saif to not include <mach/*>
headers
* Clean up mach-mxs code to get it prepared for multiplatform support
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Merge tag 'mxs-cleanup-3.10' of git://git.linaro.org/people/shawnguo/linux-2.6 into next/cleanup
From Shawn Guo <shawn.guo@linaro.org>:
The mxs cleanup for 3.10:
* Clean up timer code and move it into drivers/clocksource
* Clean up icoll code and move it into drivers/irqchip
* Clean up clock code to not include <mach/*> headers
* Clean up rtc-stmp3xxx, mxs-lradc and mxs-saif to not include <mach/*>
headers
* Clean up mach-mxs code to get it prepared for multiplatform support
* tag 'mxs-cleanup-3.10' of git://git.linaro.org/people/shawnguo/linux-2.6: (26 commits)
clocksource: mxs_timer: Add semicolon at end of line
ARM: mxs: remove unused headers
ARM: mxs: merge imx23 and imx28 into one machine_desc
ARM: mxs: remove common.h
ARM: mxs: move mxs_get_ocotp() into mach-mxs.c
ARM: mxs: remove mm.c
ARM: mxs: use debug_ll_io_init for low-level debug
ARM: mxs: get ocotp base address from device tree
ARM: mxs: remove system.c
ARM: mxs: get reset address from device tree
ARM: mxs: remove empty hardware.h
ASoC: mxs-saif: remove mach header inclusion
iio: mxs-lradc: remove unneeded mach header inclusion
rtc: stmp3xxx: use stmp_reset_block() instead
clk: mxs: remove the use of mach level IO accessor
clk: mxs: get base address from device tree
ARM: mxs: remove unneeded mach-types.h inclusion
ARM: mxs: move icoll driver into drivers/irqchip
ARM: mxs: call stmp_reset_block() in icoll
ARM: mxs: get icoll base address from device tree
...
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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Merge tag 'v3.9-rc5' into next/cleanup
This is a dependency for the mxs/cleanup branch.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Provides support for 1801 variant of stmpe gpio port expanders.
This chip has 18 gpios configurable as GPI, GPO, keypad matrix,
special key or dedicated key function.
Note that special/dedicated key function is not supported yet.
Signed-off-by: Jean-Nicolas Graux <jean-nicolas.graux@stericsson.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
much all non-critical fixes for platform device initialization
that will be needed until we can drop the board-*.c files and
move to DT based boot.
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Merge tag 'omap-for-v3.10/board-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into next/boards
From Tony Lindgren <tony@atomide.com>:
Board related changes for v3.10 merge window. These are pretty
much all non-critical fixes for platform device initialization
that will be needed until we can drop the board-*.c files and
move to DT based boot.
* tag 'omap-for-v3.10/board-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
ARM: OMAP: board-4430sdp: Provide regulator to pwm-backlight
ARM: OMAP: zoom: Use pwm stack for lcd and keyboard backlight
ARM: OMAP2+: omap2plus_defconfig: Add support for BMP085 pressure sensor
omap2+: Remove useless Makefile line
omap2+: Remove useless Makefile line
ARM: OMAP: RX-51: add missing regulator supply definitions for lis3lv02d
ARM: OMAP1: fix omap_udc registration
Includes an update to Linux 3.9-rc6
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
This pull request enables CGROUPS in defconfig and also
cleans up mach-davinci to use IS_ENABLED() macro.
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Merge tag 'davinci-for-v3.10/board' of git://git.kernel.org/pub/scm/linux/kernel/git/nsekhar/linux-davinci into next/boards
From Sekhar Nori <nsekhar@ti.com>:
v3.10 board updates for DaVinci
This pull request enables CGROUPS in defconfig and also
cleans up mach-davinci to use IS_ENABLED() macro.
* tag 'davinci-for-v3.10/board' of git://git.kernel.org/pub/scm/linux/kernel/git/nsekhar/linux-davinci:
ARM: davinci: use is IS_ENABLED macro
ARM: davinci: defconfig: enable CGROUPS
Includes an update to v3.9-rc3
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Let's not burden ia64 with checks in the common efivars code that we're not
writing too much data to the variable store. That kind of thing is an x86
firmware bug, plain and simple.
efi_query_variable_store() provides platforms with a wrapper in which they can
perform checks and workarounds for EFI variable storage bugs.
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Matthew Garrett <mjg59@srcf.ucam.org>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
syscon.h header uses struct device_node in functions' declarations
without declaring it. This causes compilation warnings like:
include/linux/mfd/syscon.h:20: warning: ‘struct device_node’
declared inside parameter list
include/linux/mfd/syscon.h:20: warning: its scope is only this
definition or declaration, which is probably not what you want
Fix it by adding a forward declaration of struct device_node.
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Acked-by: Dong Aisheng <dong.aisheng@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This will later allow NFS locking code to wait for readahead to complete
before releasing byte range locks.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
It should be left to the drivers to enable and disable the device on the
MEI bus when e.g getting probed.
For drivers to be able to safely call the enable and disable hooks, the
mei_cl_ops must be set before it's probed and thus this should happen
before registering the device on the MEI bus. Hence the mei_cl_add_device()
prototype change.
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
which mistakenly changed an 'int' return type to a 'bool'. Broken
by 4dce8ba94c.
2) Add Slimtype DVD A DS8A8SH ATAPI quirk
3) ata_piix: Intel Haswell platform quirk
4) Avoid DMA'ing to stack buffer, when obtaining DEVSLP timings.
IMO a mild regression, given that libata previously did not DMA to a stack
buffer. Broken by 803739d2.
5) Fix regression impacting SMART and smartd, broken by 84a9a8cd9.
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Merge tag 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev
Pull libata fixes from Jeff Garzik:
"The HDIO_DRIVE_* fix is really the biggie.
1) Fix ATAPI regression, noticed mainly on tape drives, due to a
commit which mistakenly changed an 'int' return type to a 'bool'.
Broken by commit 4dce8ba94c ("libata: Use 'bool' return value for
ata_id_XXX")
2) Add Slimtype DVD A DS8A8SH ATAPI quirk
3) ata_piix: Intel Haswell platform quirk
4) Avoid DMA'ing to stack buffer, when obtaining DEVSLP timings. IMO
a mild regression, given that libata previously did not DMA to a
stack buffer. Broken by commit commit 803739d25c ("[libata]
replace sata_settings with devslp_timing")
5) Fix regression impacting SMART and smartd, broken by commit
84a9a8cd9d ("[libata] Set proper SK when CK_COND is set")"
* tag 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev:
[libata] Fix HDIO_DRIVE_* ioctl() Linux 3.9 regression
libata: fix DMA to stack in reading devslp_timing parameters
ata_piix: Fix DVD not dectected at some Haswell platforms
libata: Set max sector to 65535 for Slimtype DVD A DS8A8SH drive
libata: Use integer return value for atapi_command_packet_set
fixes a long time minor bug.
The first patch fixes a race that can happen if the user switches
from the irqsoff tracer to another tracer. If a irqs off latency is
detected, it will try to use the snapshot buffer, but the new tracer
wont have it allocated. There's a nasty warning that gets printed and
the trace is ignored. Nothing crashes, just a nasty WARN_ON is shown.
The second patch fixes an issue where if the sysctl is used to disable
and enable function tracing, it can put the function tracing into an
unstable state.
The third patch fixes an issue with perf using the function tracer.
An update was done, where the stub function could be called during
the perf function tracing, and that stub function wont have the
"control" flag set and cause a nasty warning when running perf.
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Merge tag 'trace-fixes-3.9-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
Pull tracing fixes from Steven Rostedt:
"This includes three fixes. Two fix features added in 3.9 and one
fixes a long time minor bug.
The first patch fixes a race that can happen if the user switches from
the irqsoff tracer to another tracer. If a irqs off latency is
detected, it will try to use the snapshot buffer, but the new tracer
wont have it allocated. There's a nasty warning that gets printed and
the trace is ignored. Nothing crashes, just a nasty WARN_ON is shown.
The second patch fixes an issue where if the sysctl is used to disable
and enable function tracing, it can put the function tracing into an
unstable state.
The third patch fixes an issue with perf using the function tracer.
An update was done, where the stub function could be called during the
perf function tracing, and that stub function wont have the "control"
flag set and cause a nasty warning when running perf."
* tag 'trace-fixes-3.9-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
ftrace: Do not call stub functions in control loop
ftrace: Consistently restore trace function on sysctl enabling
tracing: Fix race with update_max_tr_single and changing tracers
This allows to remove some boilerplate code. At the same time, call the
set_handle_irq function in the initialization function of the irqchip,
so that we can remove it from the machine declaration.
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Using CLKSRC_OF allows to remove the SoC specific sunxi_timer.h header,
and instead of using a custom init function in the machine definition
use the standard clocksource_of_init function.
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
This series consists mainly of clean-ups for clockevents and
clocksource timers on OMAP2+ devices. The most significant change
in functionality comes from the 5th patch which is changing the
selection of the clocksource timer for OMAP3 and AM335x devices
when gptimers are used for clocksource.
Note that this series depends on 7185684 (ARM: OMAP: use
consistent error checking) in RMK's tree and 960cba6 (ARM:
OMAP5: timer: Update the clocksource name as per clock data)
in omap-for-v3.10/fixes-non-critical. So this branch is based
on a merge of 7185684 and omap-for-v3.10/fixes-non-critical
to avoid non-trivial merge conflicts.
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Merge tag 'omap-for-v3.10/timer-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into next/drivers
From Tony Lindgren <tony@atomide.com>:
Clean-up for omap2+ timers from Jon Hunter <jon-hunter@ti.com>:
This series consists mainly of clean-ups for clockevents and
clocksource timers on OMAP2+ devices. The most significant change
in functionality comes from the 5th patch which is changing the
selection of the clocksource timer for OMAP3 and AM335x devices
when gptimers are used for clocksource.
Note that this series depends on 7185684 (ARM: OMAP: use
consistent error checking) in RMK's tree and 960cba6 (ARM:
OMAP5: timer: Update the clocksource name as per clock data)
in omap-for-v3.10/fixes-non-critical. So this branch is based
on a merge of 7185684 and omap-for-v3.10/fixes-non-critical
to avoid non-trivial merge conflicts.
* tag 'omap-for-v3.10/timer-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
ARM: OMAP4+: Fix sparse warning in system timers
ARM: OMAP2+: Store ID of system timers in timer structure
ARM: OMAP3: Update clocksource timer selection
ARM: OMAP2+: Simplify system timers definitions
ARM: OMAP2+: Simplify system timer clock definitions
ARM: OMAP2+: Remove hard-coded test on timer ID
ARM: OMAP2+: Display correct system timer name
ARM: OMAP2+: fix typo "CONFIG_BRIDGE_DVFS"
ARM: OMAP1: remove "config MACH_OMAP_HTCWIZARD"
ARM: OMAP: dpll: enable bypass clock only when attempting dpll bypass
ARM: OMAP2+: powerdomain: avoid testing whether an unsigned char is less than 0
ARM: OMAP2+: hwmod: Remove unused _HWMOD_WAKEUP_ENABLED flag
ARM: OMAP2+: am335x: Change the wdt1 func clk src to per_32k clk
ARM: OMAP2+: AM33xx: hwmod: Add missing sysc definition to wdt1 entry
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
These are needed for the USB PHY support, and are based on
commit 1f0972f5 from Felipe Balbi's tree as agreed on the
mailing lists.
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Merge tag 'omap-for-v3.10/usb-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into next/drivers
From Tony Lindgren <tony@atomide.com>:
EHCI platform data related changes for v3.10 merge window.
These are needed for the USB PHY support, and are based on
commit 1f0972f5 from Felipe Balbi's tree as agreed on the
mailing lists.
* tag 'omap-for-v3.10/usb-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap: (21 commits)
ARM: dts: omap3-beagle: Add USB Host support
ARM: dts: OMAP3: Add HS USB Host IP nodes
ARM: dts: OMAP4: Add HS USB Host IP nodes
ARM: OMAP: zoom: Adapt to ehci-omap changes
ARM: OMAP3: overo: Adapt to ehci-omap changes
ARM: OMAP3: omap3touchbook: Adapt to ehci-omap changes
ARM: OMAP3: omap3stalker: Adapt to ehci-omap changes
ARM: OMAP3: omap3pandora: Adapt to ehci-omap changes
ARM: OMAP3: omap3evm: Adapt to ehci-omap changes
ARM: OMAP3: igep0020: Adapt to ehci-omap changes
ARM: OMAP: devkit8000: Adapt to ehci-omap changes
ARM: OMAP3: cm-t3517: Adapt to ehci-omap changes
ARM: OMAP3: cm-t35: Adapt to ehci-omap changes
ARM: OMAP: AM3517evm: Adapt to ehci-omap changes
ARM: OMAP: AM3517crane: Adapt to ehci-omap changes
ARM: OMAP3: 3630SDP: Adapt to ehci-omap changes
ARM: OMAP3: 3430SDP: Adapt to ehci-omap changes
ARM: OMAP3: Beagle: Adapt to ehci-omap changes
ARM: OMAP2+: omap4panda: Adapt to ehci-omap changes
ARM: OMAP2+: omap-usb-host: Add usbhs_init_phys()
...
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Both zynq and shmobile have conflicts against the gic cleanup
series, resolved here.
Conflicts:
arch/arm/mach-shmobile/smp-emev2.c
arch/arm/mach-shmobile/smp-r8a7779.c
arch/arm/mach-shmobile/smp-sh73a0.c
arch/arm/mach-zynq/platsmp.c
drivers/gpio/gpio-pl061.c
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
From Michal Simek <michal.simek@xilinx.com>:
This branch is based on zynq/clksrc/cleanup parts because
there are some dependencies on moving timer to generic location.
I could based it on standard Linux tagged version but you will get
several conflicts you will have to resolve.
If you are OK to resolving these problems, please let me know
I will create another branch with core-smp changes which are not based
on zynq/clksrc/cleanup branch.
* 'zynq/core-smp' of git://git.xilinx.com/linux-xlnx:
arm: zynq: Add hotplug support
arm: zynq: Add smp support
arm: zynq: Add smp_twd timer
arm: zynq: Get rid of xilinx function prefix
arm: zynq: Add support for system reset
arm: zynq: Move slcr initialization to separate file
arm: zynq: Load scu baseaddress at run time
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
From Michal Simek <michal.simek@xilinx.com>:
* 'zynq/clksrc/cleanup' of git://git.xilinx.com/linux-xlnx:
arm: zynq: Move timer to generic location
arm: zynq: Do not use xilinx specific function names
arm: zynq: Move timer to clocksource interface
arm: zynq: Use standard timer binding
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
This series adds support for the pinctrl/gpio module on all arch-vt8500
supported SoCs.
As part of the review process, some tidy up is also done to
drivers/of/base.c to remove some code that is being constantly duplicated.
Also, a patch for the bcm2835 pinctrl driver is included to take advantage
of the new of/base.c code.
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Merge tag 'vt8500/pinctrl' of git://server.prisktech.co.nz/git/linuxwmt into next/drivers
From Tony Prisk <linux@prisktech.co.nz>:
arm: vt8500: Add pinctrl driver for arch-vt8500
This series adds support for the pinctrl/gpio module on all arch-vt8500
supported SoCs.
As part of the review process, some tidy up is also done to
drivers/of/base.c to remove some code that is being constantly duplicated.
Also, a patch for the bcm2835 pinctrl driver is included to take advantage
of the new of/base.c code.
* tag 'vt8500/pinctrl' of git://server.prisktech.co.nz/git/linuxwmt: (606 commits)
pinctrl: bcm2835: make use of of_property_read_u32_index()
gpio: vt8500: Remove arch-vt8500 gpio driver
arm: vt8500: Remove gpio devicetree nodes
arm: dts: vt8500: Update Wondermedia SoC dtsi files for pinctrl driver
pinctrl: gpio: vt8500: Add pincontrol driver for arch-vt8500
arm: vt8500: Increase available GPIOs on arch-vt8500
of: Remove duplicated code for validating property and value
of: Add support for reading a u32 from a multi-value property.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
The function tracing control loop used by perf spits out a warning
if the called function is not a control function. This is because
the control function references a per cpu allocated data structure
on struct ftrace_ops that is not allocated for other types of
functions.
commit 0a016409e4 "ftrace: Optimize the function tracer list loop"
Had an optimization done to all function tracing loops to optimize
for a single registered ops. Unfortunately, this allows for a slight
race when tracing starts or ends, where the stub function might be
called after the current registered ops is removed. In this case we
get the following dump:
root# perf stat -e ftrace:function sleep 1
[ 74.339105] WARNING: at include/linux/ftrace.h:209 ftrace_ops_control_func+0xde/0xf0()
[ 74.349522] Hardware name: PRIMERGY RX200 S6
[ 74.357149] Modules linked in: sg igb iTCO_wdt ptp pps_core iTCO_vendor_support i7core_edac dca lpc_ich i2c_i801 coretemp edac_core crc32c_intel mfd_core ghash_clmulni_intel dm_multipath acpi_power_meter pcspk
r microcode vhost_net tun macvtap macvlan nfsd kvm_intel kvm auth_rpcgss nfs_acl lockd sunrpc uinput xfs libcrc32c sd_mod crc_t10dif sr_mod cdrom mgag200 i2c_algo_bit drm_kms_helper ttm qla2xxx mptsas ahci drm li
bahci scsi_transport_sas mptscsih libata scsi_transport_fc i2c_core mptbase scsi_tgt dm_mirror dm_region_hash dm_log dm_mod
[ 74.446233] Pid: 1377, comm: perf Tainted: G W 3.9.0-rc1 #1
[ 74.453458] Call Trace:
[ 74.456233] [<ffffffff81062e3f>] warn_slowpath_common+0x7f/0xc0
[ 74.462997] [<ffffffff810fbc60>] ? rcu_note_context_switch+0xa0/0xa0
[ 74.470272] [<ffffffff811041a2>] ? __unregister_ftrace_function+0xa2/0x1a0
[ 74.478117] [<ffffffff81062e9a>] warn_slowpath_null+0x1a/0x20
[ 74.484681] [<ffffffff81102ede>] ftrace_ops_control_func+0xde/0xf0
[ 74.491760] [<ffffffff8162f400>] ftrace_call+0x5/0x2f
[ 74.497511] [<ffffffff8162f400>] ? ftrace_call+0x5/0x2f
[ 74.503486] [<ffffffff8162f400>] ? ftrace_call+0x5/0x2f
[ 74.509500] [<ffffffff810fbc65>] ? synchronize_sched+0x5/0x50
[ 74.516088] [<ffffffff816254d5>] ? _cond_resched+0x5/0x40
[ 74.522268] [<ffffffff810fbc65>] ? synchronize_sched+0x5/0x50
[ 74.528837] [<ffffffff811041a2>] ? __unregister_ftrace_function+0xa2/0x1a0
[ 74.536696] [<ffffffff816254d5>] ? _cond_resched+0x5/0x40
[ 74.542878] [<ffffffff8162402d>] ? mutex_lock+0x1d/0x50
[ 74.548869] [<ffffffff81105c67>] unregister_ftrace_function+0x27/0x50
[ 74.556243] [<ffffffff8111eadf>] perf_ftrace_event_register+0x9f/0x140
[ 74.563709] [<ffffffff816254d5>] ? _cond_resched+0x5/0x40
[ 74.569887] [<ffffffff8162402d>] ? mutex_lock+0x1d/0x50
[ 74.575898] [<ffffffff8111e94e>] perf_trace_destroy+0x2e/0x50
[ 74.582505] [<ffffffff81127ba9>] tp_perf_event_destroy+0x9/0x10
[ 74.589298] [<ffffffff811295d0>] free_event+0x70/0x1a0
[ 74.595208] [<ffffffff8112a579>] perf_event_release_kernel+0x69/0xa0
[ 74.602460] [<ffffffff816254d5>] ? _cond_resched+0x5/0x40
[ 74.608667] [<ffffffff8112a640>] put_event+0x90/0xc0
[ 74.614373] [<ffffffff8112a740>] perf_release+0x10/0x20
[ 74.620367] [<ffffffff811a3044>] __fput+0xf4/0x280
[ 74.625894] [<ffffffff811a31de>] ____fput+0xe/0x10
[ 74.631387] [<ffffffff81083697>] task_work_run+0xa7/0xe0
[ 74.637452] [<ffffffff81014981>] do_notify_resume+0x71/0xb0
[ 74.643843] [<ffffffff8162fa92>] int_signal+0x12/0x17
To fix this a new ftrace_ops flag is added that denotes the ftrace_list_end
ftrace_ops stub as just that, a stub. This flag is now checked in the
control loop and the function is not called if the flag is set.
Thanks to Jovi for not just reporting the bug, but also pointing out
where the bug was in the code.
Link: http://lkml.kernel.org/r/514A8855.7090402@redhat.com
Link: http://lkml.kernel.org/r/1364377499-1900-15-git-send-email-jovi.zhangwei@huawei.com
Tested-by: WANG Chao <chaowang@redhat.com>
Reported-by: WANG Chao <chaowang@redhat.com>
Reported-by: zhangwei(Jovi) <jovi.zhangwei@huawei.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
The enum is missing the definition for the first bit, which makes all
the rest off by one. Add definition for the TPS65090_IRQ_INTERRUPT bit
which at 0.
Signed-off-by: Rhyland Klein <rklein@nvidia.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
is_palmas_charger checks for the presence of charging
functionality in the device
Signed-off-by: Graeme Gregory <gg@slimlogic.co.uk>
Signed-off-by: Ian Lartey <ian@slimlogic.co.uk>
Acked-by: Laxman Dewangani <ldewangan@nvidia.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
All idle functions in arch/* are more or less the same, plus minus a
few bugs and extra instrumentation, tickless support and other
optional items.
Implement a generic idle function which resembles the functionality
found in arch/. Provide weak arch_cpu_idle_* functions which can be
overridden by the architecture code if needed.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Paul McKenney <paulmck@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Reviewed-by: Cc: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
Cc: Magnus Damm <magnus.damm@gmail.com>
Link: http://lkml.kernel.org/r/20130321215233.646635455@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
For now this calls cpu_idle(), but in the long run we want to move the
cpu bringup code to the core and therefor we add a state argument.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Paul McKenney <paulmck@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Reviewed-by: Cc: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
Cc: Magnus Damm <magnus.damm@gmail.com>
Link: http://lkml.kernel.org/r/20130321215233.583190032@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Implement set/clear functions for the idle need_resched poll
implementation.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Paul McKenney <paulmck@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Reviewed-by: Cc: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
Cc: Magnus Damm <magnus.damm@gmail.com>
Link: http://lkml.kernel.org/r/20130321215233.518839807@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Move it to a common place. Preparatory patch for implementing
set/clear for the idle need_resched poll implementation.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Paul McKenney <paulmck@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Reviewed-by: Cc: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
Cc: Magnus Damm <magnus.damm@gmail.com>
Link: http://lkml.kernel.org/r/20130321215233.446034505@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Currently, __kprobes is defined in linux/kprobes.h which
is too big to be included in small or basic headers
that want to make use of this simple attribute.
So move __kprobes definition into linux/compiler.h
in which other compiler attributes are defined.
Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Timo Juhani Lindfors <timo.lindfors@iki.fi>
Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Cc: Pavel Emelyanov <xemul@parallels.com>
Cc: Jiri Kosina <jkosina@suse.cz>
Cc: Nadia Yvette Chambers <nyc@holomorphy.com>
Cc: yrl.pp-manager.tt@hitachi.com
Cc: David S. Miller <davem@davemloft.net>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: http://lkml.kernel.org/r/20130404104049.21071.20908.stgit@mhiramat-M0-7522
[ Improved the attribute explanation a bit. ]
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Some drivers want to tell userspace what uid and gid should be used for
their device nodes, so allow that information to percolate through the
driver core to userspace in order to make this happen. This means that
some systems (i.e. Android and friends) will not need to even run a
udev-like daemon for their device node manager and can just rely in
devtmpfs fully, reducing their footprint even more.
Signed-off-by: Kay Sievers <kay@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
A second tag for the ARM SoC tree will build upon
this one. This mainly removes the header file
dependencies from the PRCMU driver in the MFD
subsystem, and moves the PM functions to the
machine.
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Merge tag 'ux500-multiplatform-mfd' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-stericsson
MFD portions of the ux500 multiplatform branch.
A second tag for the ARM SoC tree will build upon
this one. This mainly removes the header file
dependencies from the PRCMU driver in the MFD
subsystem, and moves the PM functions to the
machine.
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Driver twl4030-madc has hardcoded channel types (10 - battery current,
1 - battery temperature) and also conversation data in variable
twl4030_divider_ratios. These hardcoded channels are incorrect for
Nokia RX-51 board (where is channel 0 - battery temperature).
For Nokia RX-51 there is rx51_battery power_supply driver which reporting
battery information via twl4030_madc_conversion. But this driver needs
raw values (not converted via some hardcoded functions). So this patch
adding new parameter "raw" to struct twl4030_madc_request which tell
twl4030-madc driver to not convert values, but rather return raw.
Signed-off-by: Pali Rohár <pali.rohar@gmail.com>
Reviewed-by: Anton Vorontsov <anton@enomsg.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
If a GPIO is specified for the chip IRQ line then request it. This
improves support for systems that do not put pins into input mode when
used as interrupts.
Also use this GPIO when the primary IRQ is in edge triggered mode to
detect if we have handled pending interrupts in order to improve
robustness.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Allow the user to configure edge triggered IRQs, though we do not yet
fully handle new interrupts occurring while an interrupt is being handled.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This patch changes the name of USB ohci header from 'usb-exynos.h'
to 'usb-ohci-exynos.h'. This is because this header file has
the platdata for only EXYNOS OHCI.
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
This header file only contains platform data structure definitions,
so it's straightforward to move.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
[Delete one include rather than move it]
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
