Maxime Ripard [Mon, 20 Jul 2015 12:41:12 +0000 (14:41 +0200)]
pinctrl: sunxi: Add irq_chip name
In order to ease the debugging, add a name to the irq_chips.
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Reviewed-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Maxime Ripard [Mon, 20 Jul 2015 12:41:11 +0000 (14:41 +0200)]
pinctrl: sunxi: Use common functions to change irq_chip and handler
The current code uses some custom variable affectations, while we have
common functions to do exactly that. Move to the common functions.
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Reviewed-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Baruch Siach [Tue, 5 May 2015 10:55:10 +0000 (13:55 +0300)]
pinctrl: driver for Conexant Digicolor CX92755 pin mapping
This adds pinctrl and gpio driver to the CX92755 SoC "General
Purpose Pin Mapping" hardware block. The CX92755 is one SoC
from the Conexant Digicolor series. Pin mapping hardware supports
configuring pins as either GPIO, or up to 3 other "client select"
functions. This driver adds support for pin muxing using the
generic device tree binding, and a basic gpiolib driver for
the GPIO functionality.
This driver does not currently support GPIO interrupts, and
pad configuration.
v2:
* Address review comments for Linus Walleij:
- Add a pointer to pinctrl_desc in struct dc_pinmap
- Drop the now redundant pinctrl_pin_desc field
- Adapt dc_get_group_{name,pins} to these changes, and
add a comment explaining the 1-to-1 pin-groups relation
* Staticise dc_pmxops
* Protect the GP_CLIENTSEL clct parameter with parenthesis
Linus Walleij [Wed, 17 Jun 2015 21:10:21 +0000 (23:10 +0200)]
pinctrl: nomadik: assure GPIO chips are populated
If the pin controller probes before the GPIO driver it needs to
populate the GPIO driver state containers ahead of the actual
driver probe as the addresses are used by both halves of the
driver.
Thomas Gleixner [Sun, 12 Jul 2015 23:55:27 +0000 (01:55 +0200)]
pinctrl/sunxi: Prepare sunxi_pinctrl_irq_handler for irq argument removal
The irq argument of most interrupt flow handlers is unused or merily
used instead of a local variable. The handlers which need the irq
argument can retrieve the irq number from the irq descriptor.
Search and update was done with coccinelle and the invaluable help of
Julia Lawall.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Julia Lawall <Julia.Lawall@lip6.fr> Cc: Jiang Liu <jiang.liu@linux.intel.com> Cc: Linus Walleij <linus.walleij@linaro.org> Cc: linux-gpio@vger.kernel.org
Thomas Gleixner [Sun, 12 Jul 2015 23:54:35 +0000 (01:54 +0200)]
pinctrl/sirf: Prepare xxx_gpio-handle_irq for irq argument removal
The irq argument of most interrupt flow handlers is unused or merily
used instead of a local variable. The handlers which need the irq
argument can retrieve the irq number from the irq descriptor.
Search and update was done with coccinelle and the invaluable help of
Julia Lawall.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Julia Lawall <Julia.Lawall@lip6.fr> Cc: Jiang Liu <jiang.liu@linux.intel.com> Cc: Linus Walleij <linus.walleij@linaro.org> Cc: linux-gpio@vger.kernel.org
Thomas Gleixner [Sun, 12 Jul 2015 23:53:06 +0000 (01:53 +0200)]
pinctrl/qcom/msm: Prepare msm_gpio_irq_handler for irq argument removal
The irq argument of most interrupt flow handlers is unused or merily
used instead of a local variable. The handlers which need the irq
argument can retrieve the irq number from the irq descriptor.
Search and update was done with coccinelle and the invaluable help of
Julia Lawall.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Julia Lawall <Julia.Lawall@lip6.fr> Cc: Jiang Liu <jiang.liu@linux.intel.com> Cc: Linus Walleij <linus.walleij@linaro.org> Cc: linux-gpio@vger.kernel.org
Thomas Gleixner [Sun, 12 Jul 2015 23:52:00 +0000 (01:52 +0200)]
pinctrl/rockchip: Prepare rockchip_irq_demux for irq argument removal
The irq argument of most interrupt flow handlers is unused or merily
used instead of a local variable. The handlers which need the irq
argument can retrieve the irq number from the irq descriptor.
Search and update was done with coccinelle and the invaluable help of
Julia Lawall.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Julia Lawall <Julia.Lawall@lip6.fr> Cc: Jiang Liu <jiang.liu@linux.intel.com> Cc: Linus Walleij <linus.walleij@linaro.org> Cc: linux-gpio@vger.kernel.org
Thomas Gleixner [Sun, 12 Jul 2015 23:50:50 +0000 (01:50 +0200)]
pinctrl/pistachio: Prepare pistachio_gpio_irq_handler for irq argument removal
The irq argument of most interrupt flow handlers is unused or merily
used instead of a local variable. The handlers which need the irq
argument can retrieve the irq number from the irq descriptor.
Search and update was done with coccinelle and the invaluable help of
Julia Lawall.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Julia Lawall <Julia.Lawall@lip6.fr> Cc: Jiang Liu <jiang.liu@linux.intel.com> Cc: Linus Walleij <linus.walleij@linaro.org> Cc: linux-gpio@vger.kernel.org
Thomas Gleixner [Sun, 12 Jul 2015 23:50:02 +0000 (01:50 +0200)]
pinctrl/coh901: Prepare u300_gpio_irq_handler for irq argument removal
The irq argument of most interrupt flow handlers is unused or merily
used instead of a local variable. The handlers which need the irq
argument can retrieve the irq number from the irq descriptor.
Search and update was done with coccinelle and the invaluable help of
Julia Lawall.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Julia Lawall <Julia.Lawall@lip6.fr> Cc: Jiang Liu <jiang.liu@linux.intel.com> Cc: Linus Walleij <linus.walleij@linaro.org> Cc: linux-gpio@vger.kernel.org
Thomas Gleixner [Sun, 12 Jul 2015 23:48:51 +0000 (01:48 +0200)]
pinctrl/amd: Prepare amd_gpio_irq_handler for irq argument removal
The irq argument of most interrupt flow handlers is unused or merily
used instead of a local variable. The handlers which need the irq
argument can retrieve the irq number from the irq descriptor.
Search and update was done with coccinelle and the invaluable help of
Julia Lawall.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Julia Lawall <Julia.Lawall@lip6.fr> Cc: Jiang Liu <jiang.liu@linux.intel.com> Cc: Linus Walleij <linus.walleij@linaro.org>
Chained irq handlers usually set up handler data as well. We now have
a function to set both under irq_desc->lock. Replace the two calls
with one.
Search and conversion was done with coccinelle.
Reported-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Julia Lawall <Julia.Lawall@lip6.fr> Cc: Linus Walleij <linus.walleij@linaro.org> Cc: linux-gpio@vger.kernel.org
Chained irq handlers usually set up handler data as well. We now have
a function to set both under irq_desc->lock. Replace the two calls
with one.
Search and conversion was done with coccinelle.
Reported-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Julia Lawall <Julia.Lawall@lip6.fr> Cc: Linus Walleij <linus.walleij@linaro.org> Cc: linux-gpio@vger.kernel.org
Chained irq handlers usually set up handler data as well. We now have
a function to set both under irq_desc->lock. Replace the two calls
with one.
Search and conversion was done with coccinelle.
Reported-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Julia Lawall <Julia.Lawall@lip6.fr> Cc: Linus Walleij <linus.walleij@linaro.org> Cc: linux-gpio@vger.kernel.org
Timur Tabi [Wed, 15 Jul 2015 16:47:14 +0000 (11:47 -0500)]
pinctrl: add support for Qualcomm Technologies QDF2xxx ARM64 SoCs
Add the pinctrl driver for the Qualcomm Technologies QDF2xxx ARM64 SoCs,
which uses the Qualcomm Technologies TLMM pinctrl/gpio device. This
driver is probed via ACPI and uses the pinctrl-msm.c backend driver.
This driver is intended to be used only an ACPI-enabled system. As such,
UEFI will handle all pin control configuration, so this driver does not
provide pin control functions. It is effectively a GPIO-only driver.
Signed-off-by: Timur Tabi <timur@codeaurora.org> Reviewed-by: Bjorn Andersson <bjorn.andersson@sonymobile.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Bjorn Andersson [Thu, 18 Jun 2015 06:47:30 +0000 (23:47 -0700)]
pinctrl: qcom: spmi-mpp: Transpose pinmux function
The "function" of the MPP driver was inherited from the GPIO driver, but the
differences between the two hardware blocks makes both the driver and the
device tree binding to be awkward.
Instead of overloading the "normal" function with various modes this patch
transposes the pinmux function to represent the three operating modes of the
MPP (digital, analog and current sink). The properties of pin pairing and DTEST
routing is moved to separate properties.
Jon Hunter [Tue, 14 Jul 2015 10:17:59 +0000 (11:17 +0100)]
pinctrl: pinconf: Fix display of configs
The function pinconf_dbg_config_print() only prints the configuration of
the 1st pin config in an array of pin configurations. Fix this so that
all pin configurations in the array are displayed.
There are a few places in the code where the pin configs are displayed
and so add a helper function to display the pin configs to simplify the
code.
Signed-off-by: Jon Hunter <jonathanh@nvidia.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Jon Hunter [Tue, 14 Jul 2015 10:17:58 +0000 (11:17 +0100)]
pinctrl: pinconf: Allow groups to be configured via debugfs
The function pinconf_dbg_config_write() currently only supports configuring
a pin configuration mapping via the debugfs. Allow group mappings to also
be configured via the debugfs.
Signed-off-by: Jon Hunter <jonathanh@nvidia.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Stephen Boyd [Tue, 7 Jul 2015 01:09:30 +0000 (18:09 -0700)]
pinctrl: qcom: Hook pm_power_down for shutdown support
Assign pm_power_off() if we have the PS_HOLD functionality so
that we can properly shutdown the SoC. Otherwise, shutdown won't
do anything besides put the CPU into a tight loop. Unfortunately,
we have to use a singleton here because pm_power_off() doesn't
take any arguments. Fortunately there's only one instance of the
pinctrl device on a running system so this isn't a problem.
Since the removal of the r8a7740 legacy SoC code in commit 44d88c754e57a6d9 ("ARM: shmobile: Remove legacy SoC code for R-Mobile
A1"), r8a7740 is only supported in generic DT-only ARM multi-platform
builds. The driver doesn't need to match platform devices by name
anymore, hence remove the corresponding platform_device_id entry.
Since the removal of the r8a7740 legacy SoC code in commit 44d88c754e57a6d9 ("ARM: shmobile: Remove legacy SoC code for R-Mobile
A1"), r8a7740 is only supported in generic ARM multi-platform builds.
Hence CONFIG_ARCH_MULTIPLATFORM is always set, and the check can be
removed.
Since the removal of the sh73a0 legacy SoC code in commit 9a9863987bf7307f ("ARM: shmobile: Remove legacy SoC code for SH-Mobile
AG5"), sh73a0 is only supported in generic DT-only ARM multi-platform
builds. The driver doesn't need to match platform devices by name
anymore, hence remove the corresponding platform_device_id entry.
Since the removal of the sh73a0 legacy SoC code in commit 9a9863987bf7307f ("ARM: shmobile: Remove legacy SoC code for SH-Mobile
AG5"), sh73a0 is only supported in generic ARM multi-platform builds.
Hence CONFIG_ARCH_MULTIPLATFORM is always set, and the check can be
removed.
If the pin function controller (which can be a GPIO controller) is
instantiated before the interrupt controllers, due to the ordering in
the DTS, the irq domains for the interrupt controllers referenced by its
"interrupts-extended" property cannot be found yet:
irq: no irq domain found for /interrupt-controller@e61c0000 !
As the sh-pfc driver accesses the platform device's resources directly,
it cannot find the (optional) IRQ resources, and thinks no interrupts
are available. This may lead to failures later, when GPIOs are used as
interupts:
gpio-keys keyboard: Unable to claim irq 0; error -22
gpio-keys: probe of keyboard failed with error -22
To fix this, add support for deferred probing to sh-pfc, by converting
the driver from direct platform device resource access to using the
platform_get_resource() and platform_get_irq() helpers.
Note that while this fixes the root cause worked around by commit e4ba0a9bddff3ba5 ("ARM: shmobile: r8a73a4: Move pfc node to work around
probe ordering bug"), I strongly recommend against reverting the
workaround now, as this would lead to lots of probe deferrals in drivers
relying on pinctrl. This may be reconsidered once the DT code starts
taking into account phandle dependencies during device instantation.
Laurent Pinchart [Tue, 30 Jun 2015 08:29:57 +0000 (11:29 +0300)]
pinctrl: sh-pfc: Accept standard function, pins and groups properties
The "function", "pins" and "groups" pinmux and pinctrl properties have
been standardized. Support them in addition to the custom "renesas,*"
properties. New-style and old-style properties can't be mixed in DT.
Dan Carpenter [Mon, 22 Jun 2015 15:13:15 +0000 (18:13 +0300)]
pinctrl: samsung: remove "out of memory" messages
Checkpatch.pl complains about these:
WARNING: Possible unnecessary 'out of memory' message
The messages use a little extra RAM and they add a few extra lines of
code. We're probably never going to hit these out of memory situations
but if we did then kmalloc() has pretty good error messages built-in.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Dan Carpenter [Mon, 22 Jun 2015 15:12:24 +0000 (18:12 +0300)]
pinctrl: samsung: don't truncate the last char
We were allocating enough space because sizeof("-grp") and
sizeof("-mux") are both equal to 5 but in the snprintf() we only allowed
for 4 characters so the last 'p' and 'x' characters were truncated.
The allocate and sprintf can be done in one step with the kasprintf().
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Add pin configuration and pinmux support for UniPhier PH1-LD6b SoC.
Changes in v2:
- sort groups and funcs alphabetically
- add i2c pin-mux settings
- sort members of platform_driver
- change to tristate
- add THIS_MODULE to pinctrl_desc
- use module_platform_driver
Add pin configuration and pinmux support for UniPhier ProXstream2
SoC.
Changes in v2:
- sort groups and funcs alphabetically
- add i2c pin-mux settings
- sort members of platform_driver
- change to tristate
- add THIS_MODULE to pinctrl_desc
- use module_platform_driver
Add pin configuration and pinmux support for UniPhier PH1-Pro5 SoC.
Changes in v2:
- sort groups and funcs alphabetically
- add i2c pin-mux settings
- sort members of platform_driver
- change to tristate
- add THIS_MODULE to pinctrl_desc
- use module_platform_driver
Add pin configuration and pinmux support for UniPhier PH1-sLD8 SoC.
Changes in v2:
- sort groups and funcs alphabetically
- add i2c pin-mux settings
- sort members of platform_driver
- change to tristate
- add THIS_MODULE to pinctrl_desc
- use module_platform_driver
Add pin configuration and pinmux support for UniPhier PH1-Pro4 SoC.
Changes in v2:
- sort groups and funcs alphabetically
- add i2c pin-mux settings
- sort members of platform_driver
- change to tristate
- add THIS_MODULE to pinctrl_desc
- use module_platform_driver
Add pin configuration and pinmux support for UniPhier PH1-LD4 SoC.
Changes in v2:
- sort groups and funcs alphabetically
- add missing "emmc_dat8" group
- add i2c pin-mux settings
- sort members of platform_driver
- change to tristate
- add THIS_MODULE to pinctrl_desc
- use module_platform_driver
pinctrl: UniPhier: add UniPhier pinctrl core support
The core support for the pinctrl drivers for all the UniPhier SoCs.
Changes in v2:
- drop vogus THIS_MODULE because this file is always built-in
- drop vogus "include <linux/module.h> because this file is
always built-in
Bjorn Andersson [Thu, 18 Jun 2015 06:47:26 +0000 (23:47 -0700)]
pinctrl: qcom: spmi-mpp: Fixes related to enable handling
There's currently no way to re-enable a mpp block once you've entered a state
that disables the state, this patch makes it possible to leave the
bias-high-impedance state.
Also read the enable state from the hardware on probe.
With this in place the is_enabled variable is accurately tracking the state of
the hardware and we can use that for the debug output as well.
So the change to test 'crtc_state->base.active' cannot possibly be
correct as-is.
There may be some other minimal fix (like just checking crtc_state for
NULL), but I'm just reverting it now for the rc2 release, and people
like Daniel Vetter who actually know this code will figure out what the
right solution is in the longer term.
Reported-and-bisected-by: Jörg Otte <jrg.otte@gmail.com> Cc: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com> Cc: Jani Nikula <jani.nikula@linux.intel.com> Cc: Daniel Vetter <daniel.vetter@intel.com> CC: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull VFS fixes from Al Viro:
"Fixes for this cycle regression in overlayfs and a couple of
long-standing (== all the way back to 2.6.12, at least) bugs"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
freeing unlinked file indefinitely delayed
fix a braino in ovl_d_select_inode()
9p: don't leave a half-initialized inode sitting around
Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus
Pull MIPS fixes from Ralf Baechle:
"A fair number of 4.2 fixes also because Markos opened the flood gates.
- Patch up the math used calculate the location for the page bitmap.
- The FDC (Not what you think, FDC stands for Fast Debug Channel) IRQ
around was causing issues on non-Malta platforms, so move the code
to a Malta specific location.
- A spelling fix replicated through several files.
- Fix to the emulation of an R2 instruction for R6 cores.
- Fix the JR emulation for R6.
- Further patching of mindless 64 bit issues.
- Ensure the kernel won't crash on CPUs with L2 caches with >= 8
ways.
- Use compat_sys_getsockopt for O32 ABI on 64 bit kernels.
- Fix cache flushing for multithreaded cores.
- A build fix"
* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus:
MIPS: O32: Use compat_sys_getsockopt.
MIPS: c-r4k: Extend way_string array
MIPS: Pistachio: Support CDMM & Fast Debug Channel
MIPS: Malta: Make GIC FDC IRQ workaround Malta specific
MIPS: c-r4k: Fix cache flushing for MT cores
Revert "MIPS: Kconfig: Disable SMP/CPS for 64-bit"
MIPS: cps-vec: Use macros for various arithmetics and memory operations
MIPS: kernel: cps-vec: Replace KSEG0 with CKSEG0
MIPS: kernel: cps-vec: Use ta0-ta3 pseudo-registers for 64-bit
MIPS: kernel: cps-vec: Replace mips32r2 ISA level with mips64r2
MIPS: kernel: cps-vec: Replace 'la' macro with PTR_LA
MIPS: kernel: smp-cps: Fix 64-bit compatibility errors due to pointer casting
MIPS: Fix erroneous JR emulation for MIPS R6
MIPS: Fix branch emulation for BLTC and BGEC instructions
MIPS: kernel: traps: Fix broken indentation
MIPS: bootmem: Don't use memory holes for page bitmap
MIPS: O32: Do not handle require 32 bytes from the stack to be readable.
MIPS, CPUFREQ: Fix spelling of Institute.
MIPS: Lemote 2F: Fix build caused by recent mass rename.
Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Thomas Gleixner:
- the high latency PIT detection fix, which slipped through the cracks
for rc1
- a regression fix for the early printk mechanism
- the x86 part to plug irq/vector related hotplug races
- move the allocation of the espfix pages on cpu hotplug to non atomic
context. The current code triggers a might_sleep() warning.
- a series of KASAN fixes addressing boot crashes and usability
- a trivial typo fix for Kconfig help text
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/kconfig: Fix typo in the CONFIG_CMDLINE_BOOL help text
x86/irq: Retrieve irq data after locking irq_desc
x86/irq: Use proper locking in check_irq_vectors_for_cpu_disable()
x86/irq: Plug irq vector hotplug race
x86/earlyprintk: Allow early_printk() to use console style parameters like '115200n8'
x86/espfix: Init espfix on the boot CPU side
x86/espfix: Add 'cpu' parameter to init_espfix_ap()
x86/kasan: Move KASAN_SHADOW_OFFSET to the arch Kconfig
x86/kasan: Add message about KASAN being initialized
x86/kasan: Fix boot crash on AMD processors
x86/kasan: Flush TLBs after switching CR3
x86/kasan: Fix KASAN shadow region page tables
x86/init: Clear 'init_level4_pgt' earlier
x86/tsc: Let high latency PIT fail fast in quick_pit_calibrate()
Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer fixes from Thomas Gleixner:
"This update from the timer departement contains:
- A series of patches which address a shortcoming in the tick
broadcast code.
If the broadcast device is not available or an hrtimer emulated
broadcast device, some of the original assumptions lead to boot
failures. I rather plugged all of the corner cases instead of only
addressing the issue reported, so the change got a little larger.
Has been extensivly tested on x86 and arm.
- Get rid of the last holdouts using do_posix_clock_monotonic_gettime()
- A regression fix for the imx clocksource driver
- An update to the new state callbacks mechanism for clockevents.
This is required to simplify the conversion, which will take place
in 4.3"
* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
tick/broadcast: Prevent NULL pointer dereference
time: Get rid of do_posix_clock_monotonic_gettime
cris: Replace do_posix_clock_monotonic_gettime()
tick/broadcast: Unbreak CONFIG_GENERIC_CLOCKEVENTS=n build
tick/broadcast: Handle spurious interrupts gracefully
tick/broadcast: Check for hrtimer broadcast active early
tick/broadcast: Return busy when IPI is pending
tick/broadcast: Return busy if periodic mode and hrtimer broadcast
tick/broadcast: Move the check for periodic mode inside state handling
tick/broadcast: Prevent deep idle if no broadcast device available
tick/broadcast: Make idle check independent from mode and config
tick/broadcast: Sanity check the shutdown of the local clock_event
tick/broadcast: Prevent hrtimer recursion
clockevents: Allow set-state callbacks to be optional
clocksource/imx: Define clocksource for mx27
Merge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull irq fix from Thomas Gleixner:
"A single fix for a cpu hotplug race vs. interrupt descriptors:
Prevent irq setup/teardown across the cpu starting/dying parts of cpu
hotplug so that the starting/dying cpu has a stable view of the
descriptor space. This has been an issue for all architectures in the
cpu dying phase, where interrupts are migrated away from the dying
cpu. In the starting phase its mostly a x86 issue vs the vector space
update"
* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
hotplug: Prevent alloc/free of irq descriptors during cpu up/down
Al Viro [Wed, 8 Jul 2015 01:42:38 +0000 (02:42 +0100)]
freeing unlinked file indefinitely delayed
Normally opening a file, unlinking it and then closing will have
the inode freed upon close() (provided that it's not otherwise busy and
has no remaining links, of course). However, there's one case where that
does *not* happen. Namely, if you open it by fhandle with cold dcache,
then unlink() and close().
In normal case you get d_delete() in unlink(2) notice that dentry
is busy and unhash it; on the final dput() it will be forcibly evicted from
dcache, triggering iput() and inode removal. In this case, though, we end
up with *two* dentries - disconnected (created by open-by-fhandle) and
regular one (used by unlink()). The latter will have its reference to inode
dropped just fine, but the former will not - it's considered hashed (it
is on the ->s_anon list), so it will stay around until the memory pressure
will finally do it in. As the result, we have the final iput() delayed
indefinitely. It's trivial to reproduce -
main()
{
int fd;
union {
struct file_handle f;
char buf[MAX_HANDLE_SZ];
} x;
int m;
x.f.handle_bytes = sizeof(x);
chdir("/root");
mkdir("foo", 0700);
fd = open("foo/bar", O_CREAT | O_RDWR, 0600);
close(fd);
name_to_handle_at(AT_FDCWD, "foo/bar", &x.f, &m, 0);
flush_dcache();
fd = open_by_handle_at(AT_FDCWD, &x.f, O_RDWR);
unlink("foo/bar");
write(fd, buf, sizeof(buf));
system("df ."); /* 20Mb eaten */
close(fd);
system("df ."); /* should've freed those 20Mb */
flush_dcache();
system("df ."); /* should be the same as #2 */
}
will spit out something like
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/root 322023 303843 1131 100% /
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/root 322023 303843 1131 100% /
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/root 322023 283282 21692 93% /
- inode gets freed only when dentry is finally evicted (here we trigger
than by remount; normally it would've happened in response to memory
pressure hell knows when).
Cc: stable@vger.kernel.org # v2.6.38+; earlier ones need s/kill_it/unhash_it/ Acked-by: J. Bruce Fields <bfields@fieldses.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Al Viro [Sun, 12 Jul 2015 14:39:45 +0000 (10:39 -0400)]
fix a braino in ovl_d_select_inode()
when opening a directory we want the overlayfs inode, not one from
the topmost layer.
Reported-By: Andrey Jr. Melnikov <temnota.am@gmail.com> Tested-By: Andrey Jr. Melnikov <temnota.am@gmail.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Merge branch 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/nvdimm
Pull libnvdimm fixes from Dan Williams:
"1) Fixes for a handful of smatch reports (Thanks Dan C.!) and minor
bug fixes (patches 1-6)
2) Correctness fixes to the BLK-mode nvdimm driver (patches 7-10).
Granted these are slightly large for a -rc update. They have been
out for review in one form or another since the end of May and were
deferred from the merge window while we settled on the "PMEM API"
for the PMEM-mode nvdimm driver (ie memremap_pmem, memcpy_to_pmem,
and wmb_pmem).
Now that those apis are merged we implement them in the BLK driver
to guarantee that mmio aperture moves stay ordered with respect to
incoming read/write requests, and that writes are flushed through
those mmio-windows and platform-buffers to be persistent on media.
These pass the sub-system unit tests with the updates to
tools/testing/nvdimm, and have received a successful build-report from
the kbuild robot (468 configs).
With acks from Rafael for the touches to drivers/acpi/"
* 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/nvdimm:
nfit: add support for NVDIMM "latch" flag
nfit: update block I/O path to use PMEM API
tools/testing/nvdimm: add mock acpi_nfit_flush_address entries to nfit_test
tools/testing/nvdimm: fix return code for unimplemented commands
tools/testing/nvdimm: mock ioremap_wt
pmem: add maintainer for include/linux/pmem.h
nfit: fix smatch "use after null check" report
nvdimm: Fix return value of nvdimm_bus_init() if class_create() fails
libnvdimm: smatch cleanups in __nd_ioctl
sparse: fix misplaced __pmem definition
Merge branch 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
Pull i2c fixes from Wolfram Sang:
"Mostly slight adjusments for new drivers, but also one core fix for
which finally the dependencies are now available as well"
* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
i2c: Mark instantiated device nodes with OF_POPULATE
i2c: jz4780: Fix return value if probe fails
i2c: xgene-slimpro: Fix missing mbox_free_channel call in probe error path
i2c: I2C_MT65XX should depend on HAS_DMA
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
Pull input fixes from Dmitry Torokhov:
"A fix (revert) for a recent regression in Synaptics driver and a fix
for Elan i2c touchpad driver"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
Revert "Input: synaptics - allocate 3 slots to keep stability in image sensors"
Input: elan_i2c - change the hover event from MT to ST
Merge tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux
Pull clk fixes from Stephen Boyd:
"A small set of fixes for problems found by smatch in new drivers that
we added this rc and a handful of driver fixes that came in during the
merge window"
* tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux:
drivers: clk: st: Incorrect register offset used for lock_status
clk: mediatek: mt8173: Fix enabling of critical clocks
drivers: clk: st: Fix mux bit-setting for Cortex A9 clocks
drivers: clk: st: Add CLK_GET_RATE_NOCACHE flag to clocks
drivers: clk: st: Fix flexgen lock init
drivers: clk: st: Fix FSYN channel values
drivers: clk: st: Remove unused code
clk: qcom: Use parent rate when set rate to pixel RCG clock
clk: at91: do not leak resources
clk: stm32: Fix out-by-one error path in the index lookup
clk: iproc: fix bit manipulation arithmetic
clk: iproc: fix memory leak from clock name
Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
Pull drm fixes from Dave Airlie:
"A bunch of fixes for radeon, intel, omap and one amdkfd fix.
Radeon fixes are all over, but it does fix some cursor corruption
across suspend/resume. i915 should fix the second warn you were
seeing, so let us know if not. omap is a bunch of small fixes"
* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: (28 commits)
drm/radeon: disable vce init on cayman (v2)
drm/amdgpu: fix timeout calculation
drm/radeon: check if BO_VA is set before adding it to the invalidation list
drm/radeon: allways add the VM clear duplicate
Revert "Revert "drm/radeon: dont switch vt on suspend""
drm/radeon: Fold radeon_set_cursor() into radeon_show_cursor()
drm/radeon: unpin cursor BOs on suspend and pin them again on resume (v2)
drm/radeon: Clean up reference counting and pinning of the cursor BOs
drm/amdkfd: validate pdd where it acquired first
Revert "drm/i915: Allocate context objects from stolen"
drm/i915: Declare the swizzling unknown for L-shaped configurations
drm/radeon: fix underflow in r600_cp_dispatch_texture()
drm/radeon: default to 2048 MB GART size on SI+
drm/radeon: fix HDP flushing
drm/radeon: use RCU query for GEM_BUSY syscall
drm/amdgpu: Handle irqs only based on irq ring, not irq status regs.
drm/radeon: Handle irqs only based on irq ring, not irq status regs.
drm/i915: Use crtc_state->active in primary check_plane func
drm/i915: Check crtc->active in intel_crtc_disable_planes
drm/i915: Restore all GGTT VMAs on resume
...
Merge branch 'for-linus2' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security
Pull selinux fixes from James Morris.
* 'for-linus2' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security:
selinux: fix mprotect PROT_EXEC regression caused by mm change
selinux: don't waste ebitmap space when importing NetLabel categories
Merge branch 'for-linus-4.2' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs
Pull btrfs fixes from Chris Mason:
"This is an assortment of fixes. Most of the commits are from Filipe
(fsync, the inode allocation cache and a few others). Mark kicked in
a series fixing corners in the extent sharing ioctls, and everyone
else fixed up on assorted other problems"
* 'for-linus-4.2' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs:
Btrfs: fix wrong check for btrfs_force_chunk_alloc()
Btrfs: fix warning of bytes_may_use
Btrfs: fix hang when failing to submit bio of directIO
Btrfs: fix a comment in inode.c:evict_inode_truncate_pages()
Btrfs: fix memory corruption on failure to submit bio for direct IO
btrfs: don't update mtime/ctime on deduped inodes
btrfs: allow dedupe of same inode
btrfs: fix deadlock with extent-same and readpage
btrfs: pass unaligned length to btrfs_cmp_data()
Btrfs: fix fsync after truncate when no_holes feature is enabled
Btrfs: fix fsync xattr loss in the fast fsync path
Btrfs: fix fsync data loss after append write
Btrfs: fix crash on close_ctree() if cleaner starts new transaction
Btrfs: fix race between caching kthread and returning inode to inode cache
Btrfs: use kmem_cache_free when freeing entry in inode cache
Btrfs: fix race between balance and unused block group deletion
btrfs: add error handling for scrub_workers_get()
btrfs: cleanup noused initialization of dev in btrfs_end_bio()
btrfs: qgroup: allow user to clear the limitation on qgroup
Merge tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC fixes from Kevin Hilman:
"A fairly random colletion of fixes based on -rc1 for OMAP, sunxi and
prima2 as well as a few arm64-specific DT fixes.
This series also includes a late to support a new Allwinner (sunxi)
SoC, but since it's rather simple and isolated to the
platform-specific code, it's included it for this -rc"
* tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
arm64: dts: add device tree for ARM SMM-A53x2 on LogicTile Express 20MG
arm: dts: vexpress: add missing CCI PMU device node to TC2
arm: dts: vexpress: describe all PMUs in TC2 dts
GICv3: Add ITS entry to THUNDER dts
arm64: dts: Add poweroff button device node for APM X-Gene platform
ARM: dts: am4372.dtsi: disable rfbi
ARM: dts: am57xx-beagle-x15: Provide supply for usb2_phy2
ARM: dts: am4372: Add emif node
Revert "ARM: dts: am335x-boneblack: disable RTC-only sleep"
ARM: sunxi: Enable simplefb in the defconfig
ARM: Remove deprecated symbol from defconfig files
ARM: sunxi: Add Machine support for A33
ARM: sunxi: Introduce Allwinner H3 support
Documentation: sunxi: Update Allwinner SoC documentation
ARM: prima2: move to use REGMAP APIs for rtciobrg
ARM: dts: atlas7: add pinctrl and gpio descriptions
ARM: OMAP2+: Remove unnessary return statement from the void function, omap2_show_dma_caps
memory: omap-gpmc: Fix parsing of devices
Thomas Gleixner [Sat, 11 Jul 2015 12:26:34 +0000 (14:26 +0200)]
tick/broadcast: Prevent NULL pointer dereference
Dan reported that the recent changes to the broadcast code introduced
a potential NULL dereference.
Add the proper check.
Fixes: e0454311903d "tick/broadcast: Sanity check the shutdown of the local clock_event" Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Merge branch 'parisc-4.2-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux
Pull parisc fixes from Helge Deller:
"We have one important patch from Dave Anglin and myself which fixes
PTE/TLB race conditions which caused random segmentation faults on our
debian buildd servers, and one patch from Alex Ivanov which speeds up
the graphical text console on the STI framebuffer driver"
* 'parisc-4.2-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
parisc: Fix some PTE/TLB race conditions and optimize __flush_tlb_range based on timing results
stifb: Implement hardware accelerated copyarea
Stephen Smalley [Fri, 10 Jul 2015 13:40:59 +0000 (09:40 -0400)]
selinux: fix mprotect PROT_EXEC regression caused by mm change
commit 66fc13039422ba7df2d01a8ee0873e4ef965b50b ("mm: shmem_zero_setup
skip security check and lockdep conflict with XFS") caused a regression
for SELinux by disabling any SELinux checking of mprotect PROT_EXEC on
shared anonymous mappings. However, even before that regression, the
checking on such mprotect PROT_EXEC calls was inconsistent with the
checking on a mmap PROT_EXEC call for a shared anonymous mapping. On a
mmap, the security hook is passed a NULL file and knows it is dealing
with an anonymous mapping and therefore applies an execmem check and no
file checks. On a mprotect, the security hook is passed a vma with a
non-NULL vm_file (as this was set from the internally-created shmem
file during mmap) and therefore applies the file-based execute check
and no execmem check. Since the aforementioned commit now marks the
shmem zero inode with the S_PRIVATE flag, the file checks are disabled
and we have no checking at all on mprotect PROT_EXEC. Add a test to
the mprotect hook logic for such private inodes, and apply an execmem
check in that case. This makes the mmap and mprotect checking
consistent for shared anonymous mappings, as well as for /dev/zero and
ashmem.
Cc: <stable@vger.kernel.org> # 4.1.x Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov> Signed-off-by: Paul Moore <pmoore@redhat.com>
Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fixes and clean-up from Catalin Marinas:
- ACPI fix when checking the validity of the GICC MADT subtable
- handle debug exceptions in the el*_inv exception entries
- remove pointless register assignment in two compat syscall wrappers
- unnecessary include path
- defconfig update
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: entry32: remove pointless register assignment
arm64: entry: handle debug exceptions in el*_inv
arm64: Keep the ARM64 Kconfig selects sorted
ACPI / ARM64 : use the new BAD_MADT_GICC_ENTRY macro
ACPI / ARM64: add BAD_MADT_GICC_ENTRY() macro
arm64: defconfig: Add Ceva ahci to the defconfig
arm64: remove another unnecessary libfdt include path
parisc: Fix some PTE/TLB race conditions and optimize __flush_tlb_range based on timing results
The increased use of pdtlb/pitlb instructions seemed to increase the
frequency of random segmentation faults building packages. Further, we
had a number of cases where TLB inserts would repeatedly fail and all
forward progress would stop. The Haskell ghc package caused a lot of
trouble in this area. The final indication of a race in pte handling was
this syslog entry on sibaris (C8000):
Note that the pte value is 0 except for the accessed bit 0x100. This bit
shouldn't be set without the present bit.
It should be noted that the madvise system call is probably a trigger for many
of the random segmentation faults.
In looking at the kernel code, I found the following problems:
1) The pte_clear define didn't take TLB lock when clearing a pte.
2) We didn't test pte present bit inside lock in exception support.
3) The pte and tlb locks needed to merged in order to ensure consistency
between page table and TLB. This also has the effect of serializing TLB
broadcasts on SMP systems.
The attached change implements the above and a few other tweaks to try
to improve performance. Based on the timing code, TLB purges are very
slow (e.g., ~ 209 cycles per page on rp3440). Thus, I think it
beneficial to test the split_tlb variable to avoid duplicate purges.
Probably, all PA 2.0 machines have combined TLBs.
I dropped using __flush_tlb_range in flush_tlb_mm as I realized all
applications and most threads have a stack size that is too large to
make this useful. I added some comments to this effect.
Since implementing 1 through 3, I haven't had any random segmentation
faults on mx3210 (rp3440) in about one week of building code and running
as a Debian buildd.
Signed-off-by: John David Anglin <dave.anglin@bell.net> Cc: stable@vger.kernel.org # v3.18+ Signed-off-by: Helge Deller <deller@gmx.de>
Alex Ivanov [Mon, 15 Jun 2015 05:50:45 +0000 (08:50 +0300)]
stifb: Implement hardware accelerated copyarea
This patch adds hardware assisted scrolling. The code is based upon the
following investigation: https://parisc.wiki.kernel.org/index.php/NGLE#Blitter
A simple 'time ls -la /usr/bin' test shows 1.6x speed increase over soft
copy and 2.3x increase over FBINFO_READS_FAST (prefer soft copy over
screen redraw) on Artist framebuffer.
Signed-off-by: Alex Ivanov <lausgans@gmail.com> Signed-off-by: Helge Deller <deller@gmx.de>
Merge tag 'powerpc-4.2-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc fixes from Michael Ellerman:
- opal-prd mmap fix from Vaidy
- set kernel taint for MCEs from Daniel
- alignment exception description from Anton
- ppc4xx_hsta_msi build fix from Daniel
- opal-elog interrupt fix from Alistair
- core_idle_state race fix from Shreyas
- hv-24x7 lockdep fix from Sukadev
- multiple cxl fixes from Daniel, Ian, Mikey & Maninder
- update MAINTAINERS to point at shared tree
* tag 'powerpc-4.2-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
cxl: Check if afu is not null in cxl_slbia
powerpc: Update MAINTAINERS to point at shared tree
powerpc/perf/24x7: Fix lockdep warning
cxl: Fix off by one error allowing subsequent mmap page to be accessed
cxl: Fail mmap if requested mapping is larger than assigned problem state area
cxl: Fix refcounting in kernel API
powerpc/powernv: Fix race in updating core_idle_state
powerpc/powernv: Fix opal-elog interrupt handler
powerpc/ppc4xx_hsta_msi: Include ppc-pci.h to fix reference to hose_list
powerpc: Add plain English description for alignment exception oopses
cxl: Test the correct mmio space before unmapping
powerpc: Set the correct kernel taint on machine check errors
cxl/vphb.c: Use phb pointer after NULL check
powerpc/powernv: Fix vma page prot flags in opal-prd driver
This flag requires the driver to read back the command register after it
is written in the block I/O path. This ensures that the hardware has
fully processed the new command and moved the aperture appropriately.
Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com> Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Ross Zwisler [Fri, 10 Jul 2015 17:06:13 +0000 (11:06 -0600)]
nfit: update block I/O path to use PMEM API
Update the nfit block I/O path to use the new PMEM API and to adhere to
the read/write flows outlined in the "NVDIMM Block Window Driver
Writer's Guide":
For performance and media durability the mapping for a BLK aperture is
moved to a write-combining mapping which is consistent with
memcpy_to_pmem() and wmb_blk().
Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com> Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Dan Williams [Fri, 10 Jul 2015 18:07:03 +0000 (14:07 -0400)]
tools/testing/nvdimm: add mock acpi_nfit_flush_address entries to nfit_test
In preparation for fixing the BLK path to properly use "directed
pcommit" enable the unit test infrastructure to emit mock "flush"
tables. Writes to these flush addresses trigger a memory controller to
flush its internal buffers to persistent media, similar to the x86
"pcommit" instruction.
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Dan Williams [Fri, 10 Jul 2015 17:06:12 +0000 (11:06 -0600)]
tools/testing/nvdimm: fix return code for unimplemented commands
The implementation for the new "DIMM Flags" DSM relies on the -ENOTTY
return code to indicate that the flags are unimplimented and to fall
back to a safe default. As is the -ENXIO error code erroneoously
indicates to fail enabling a BLK region.
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Dan Williams [Fri, 10 Jul 2015 17:06:11 +0000 (11:06 -0600)]
tools/testing/nvdimm: mock ioremap_wt
In the 4.2-rc1 merge the default_memremap_pmem() implementation switched
from ioremap_nocache() to ioremap_wt(). Add it to the list of mocked
routines to restore the ability to run the unit tests.
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Ross Zwisler [Fri, 10 Jul 2015 17:06:10 +0000 (11:06 -0600)]
pmem: add maintainer for include/linux/pmem.h
The file include/linux/pmem.h was recently created to hold the PMEM API,
and is logically part of the PMEM driver. Add an entry for this file to
MAINTAINERS.
Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>