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The Zynq GPIO driver currently implements runtime PM by:
- Enabling runtime PM support in ->probe() and letting the runtime PM
reference counter drop to zero at the end of ->probe().
- Increasing the runtime PM reference counter in ->request() and
decreasing it in ->free().
However, the latter is not sufficient: when a GPIO is used as an
interrupt, ->request() and ->free() are not called. Due to this, the
runtime PM counter remains to zero when the only GPIOs in use are used
as interrupts, causing them to simply not work.
To address this problem, this commit implement the
->irq_request_resources() and ->irq_release_resources() hooks,
ensuring that the runtime PM counter is properly
incremented/decremented. Since we override the default hooks, we keep
the existing behavior by making sure they call gpiochip_reqres_irq() /
gpiochip_relres_irq() respectively.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Reviewed-by: Shubhrajyoti Datta <shubhrajyoti.datta@xilinx.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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GPIOs on the SPMI PMIC are numbered 1..ngpio, so the boundary check in
pmic_gpio_domain_translate() is off by one, correct this.
Fixes: ca69e2d165eb ("qcom: spmi-gpio: add support for hierarchical IRQ chip")
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Reviewed-by: Brian Masney <masneyb@onstation.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Validation of the IRQ type was added to spmi pmic-arb, however spmi-mpp
in device tree still uses IRQ_TYPE_NONE. This commit caused the
spmi-mpp probe to fail since platform_irq_count() would return 0.
Correct this by backing out the previous patch.
Signed-off-by: Brian Masney <masneyb@onstation.org>
Fixes: 135ef21ab064 ("spmi: pmic-arb: validate type when mapping IRQ")
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Interupts were generated using GPIN interrupts of
ADP5588. These interrupts have two important limitations:
1. Interrupts can only be generated for either rising or
falling edges but not both.
2. Interrupts are reasserted as long as the interrupt condition
persists (i.e. high or low level on that GPIN). This generates
lots of interrupts unless the event is very short.
To overcome this, ADP5588 provides an event system which queues
up to 10 events in a buffer. GPIN events are queued whenever the
GPIN is asserted or deasserted. This makes it possible to support
generating GPIN interrupts for both edges and to generate only one
interrupt per state change.
Thus it is possible to chain the gpio-keys driver for some GPIOs.
Signed-off-by: Nikolaus Voss <nikolaus.voss@loewensteinmedical.de>
Acked-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Make platform data optional and add DT id table.
Switch to dynamically mapped GPIOs and IRQs if not provided
via platform data.
Signed-off-by: Nikolaus Voss <nikolaus.voss@loewensteinmedical.de>
Acked-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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It's not necessary to remove gpio_chip which added with
devm_gpiochip_add_data().
Fixes: b868db94a6a7 ("gpio: tqmx86: Add GPIO from for this IO controller")
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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This adds a driver for Gateworks PLD GPIO, that exist in
two instances on the Gateworks Cambria GW2358-4 router
platform at least.
Cc: Imre Kaloz <kaloz@openwrt.org>
Cc: Tim Harvey <tharvey@gateworks.com>
Reviewed-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Select IRQ_DOMAIN_HIERARCHY for spmi-gpio in Kconfig since this driver
is now setup as a hierarchical IRQ chip.
Signed-off-by: Brian Masney <masneyb@onstation.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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The checker complains during build
gpiolib-acpi.c:45: warning: Function parameter or member 'irq_requested' not described in 'acpi_gpio_event'
because the typo in the field description.
Fix the name to have documentation up-to-date.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Some TQ-Systems ComExpress modules contain an IO controller with 8
GPIO lines.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Add missing '*' char to the start of the comment lines.
Signed-off-by: Phil Reid <preid@electromag.com.au>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Now that spmi-gpio is a proper hierarchical IRQ chip, and all in-tree
users of device tree have been updated, we can now drop the hack that
was introduced to disassociate the old Linux virq if a hwirq mapping
already exists. That patch was introduced to not break git bisect for
any existing boards.
Driver was tested using gpio-keys and iadc/vadc on the LG Nexus 5
(hammerhead) phone.
Signed-off-by: Brian Masney <masneyb@onstation.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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qpnpint_irq_domain_map did not validate the IRQ type and this can cause
IRQs to not work as expected if an unsupported type (such as
IRQ_TYPE_NONE) is passed in. Now that spmi-gpio is a hierarchical IRQ
controller, and all device tree bindings have been updated, add
additional validation to the type field.
Signed-off-by: Brian Masney <masneyb@onstation.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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spmi-gpio did not have any irqchip support so consumers of this in
device tree would need to call gpio[d]_to_irq() in order to get the
proper IRQ on the underlying PMIC. IRQ chips in device tree should
be usable from the start without the consumer having to make an
additional call to get the proper IRQ on the parent. This patch adds
hierarchical IRQ chip support to the spmi-gpio code to correct this
issue.
Driver was tested using the volume buttons (via gpio-keys) on the LG
Nexus 5 (hammerhead) phone with the following two configurations.
volume-up {
interrupts-extended = <&pm8941_gpios 2 IRQ_TYPE_EDGE_BOTH>;
...
};
volume-up {
gpios = <&pm8941_gpios 2 GPIO_ACTIVE_LOW>;
...
};
Both configurations now show that spmi-gpio is the IRQ domain and that
the IRQ is setup in a hierarchy.
$ grep volume_up /proc/interrupts
72: 6 0 spmi-gpio 1 Edge volume_up
$ cat /sys/kernel/debug/irq/irqs/72
handler: handle_edge_irq
device: (null)
status: 0x00000403
_IRQ_NOPROBE
istate: 0x00000000
ddepth: 0
wdepth: 0
dstate: 0x02400203
IRQ_TYPE_EDGE_RISING
IRQ_TYPE_EDGE_FALLING
IRQD_ACTIVATED
IRQD_IRQ_STARTED
node: 0
affinity: 0-3
effectiv:
domain: :soc:spmi@fc4cf000:pm8941@0:gpios@c000
hwirq: 0x1
chip: spmi-gpio
flags: 0x4
IRQCHIP_MASK_ON_SUSPEND
parent:
domain: :soc:spmi@fc4cf000
hwirq: 0xc100057
chip: pmic_arb
flags: 0x4
IRQCHIP_MASK_ON_SUSPEND
Signed-off-by: Brian Masney <masneyb@onstation.org>
Reviewed-by: Stephen Boyd <sboyd@kernel.org>
Reviewed-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Check to see if the hwirq is already associated with another virq on
this IRQ domain. If so, then disassociate it before associating the
hwirq with the new virq.
This is a temporary hack that is needed in order to not break git
bisect for existing boards. The next patch in this series converts
spmi-gpio to be a hierarchical IRQ chip, then there are several patches
to update all of the device tree files, and finally this patch will be
reverted within the same patch series.
IRQs for spmi-gpio are all initially setup without an IRQ hierarchy
on pmic-arb when mfd/qcom-spmi-pmic.c is probed (via the
devm_of_platform_populate call) due to the interrupts property in
device tree. Once spmi-gpio is converted to be a hierarchical IRQ chip
in the next patch, existing users of gpio[d]_to_irq() will call
pmic_gpio_to_irq(), and that will use the new IRQ chip code in
spmi-gpio that sets up the IRQ in an IRQ hierarchy. The hwirq is now
associated with two Linux virqs and interrupts will not work as
expected. This patch corrects that issue.
Driver was tested using gpio-keys and iadc/vadc on the LG Nexus 5
(hammerhead) phone.
Signed-off-by: Brian Masney <masneyb@onstation.org>
Reviewed-by: Stephen Boyd <sboyd@kernel.org>
Acked-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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This adds the two new functions gpiochip_irq_domain_activate and
gpiochip_irq_domain_deactivate that can be used as the activate and
deactivate functions in the struct irq_domain_ops. This is for
situations where only gpiochip_{lock,unlock}_as_irq needs to be called.
SPMI and SSBI GPIO are two users that will initially use these
functions.
Signed-off-by: Brian Masney <masneyb@onstation.org>
Suggested-by: Stephen Boyd <sboyd@kernel.org>
Reviewed-by: Stephen Boyd <sboyd@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Convert the spmi-pmic-arb IRQ code to use the version 2 IRQ interface
in order to support hierarchical IRQ chips. This is necessary so that
spmi-gpio can be setup as a hierarchical IRQ chip with pmic-arb as the
parent. IRQ chips in device tree should be usable from the start without
the consumer having to make an additional call to gpio[d]_to_irq() to
get the proper IRQ on the parent.
The old qpnpint_irq_domain_map function would hardcode the handler as
handle_level_irq, however qpnpint_irq_set_type would later override the
handler. Properly set the handler when the IRQ is mapped. This new code
doesn't return an error for IRQ_TYPE_NONE and preserves the existing
behavior of using handle_level_irq since there are some broken device
tree bindings that need to be corrected first.
Driver was tested on a LG Nexus 5 (hammerhead) phone.
Signed-off-by: Brian Masney <masneyb@onstation.org>
Reviewed-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Basic implementation of driver is used to support Fintek
F81804 & F81966 gpios with custom register set.
Signed-off-by: Steffen Kothe <steffen.kothe.gc1993@googlemail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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R-Car GPIO controller provides two interfaces to set GPIO line output
signal state, and for a particular GPIO line the selected interface is
determined by OUTDTSEL bit value.
At the moment the driver supports only one of two interfaces, namely
OUTDT General Output Register is used to control the output signal.
While this selection is the default one on reset, it is not explicitly
configured on probe, thus it might be possible that kernel and userspace
consumers of a GPIO won't be able to set the wanted GPIO output signal.
Below is a simple test case to reproduce the described problem and
verify this fix in the kernel on H3 ULCB by setting non-default OUTDTSEL
configuration from a bootloader:
u-boot > mw.l 0xe6055440 0x3000 1
...
userspace > echo default-on > /sys/devices/platform/leds/leds/led5/trigger
userspace > echo default-on > /sys/devices/platform/leds/leds/led6/trigger
Signed-off-by: Vladimir Zapolskiy <vladimir_zapolskiy@mentor.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Like the Spreadtrum EIC driver[1], this driver needs to emulate edge
triggered interrupts to support the generic gpio-keys driver.
[1]: https://www.spinics.net/lists/kernel/msg2764576.html
Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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This patch implements level-triggered IRQs in the Hollywood GPIO driver.
Edge triggered interrupts are not supported in this GPIO controller, so
I moved their emulation into a separate patch.
Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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When a system has two PCA953x GPIO expanders, the kernel complains with:
gpio gpiochip2: (0-0021): detected irqchip that is shared with multiple gpiochips: please fix the driver.
Indeed, there is a single instance of "struct irq_chip" that gets
re-used for both PCA953x instance. This commit moves the "struct
irq_chip" to be part of the "struct pca953x_chip", so that we have one
"struct irq_chip" per PCA953X instance.
As part of this, the name of the irq_chip is also made different on a
per-instance basis, now using the dev_name() of the I2C device. This
changes what is visible in /proc/interrupts.
Before:
47: 0 0 pca953x 10 Edge e0100000.sdhci cd
48: 0 0 pca953x 6 Edge e0101000.sdhci cd
After:
47: 0 0 0-0020 10 Edge e0100000.sdhci cd
48: 2 0 0-0020 6 Edge e0101000.sdhci cd
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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The current design of pca953x_irq_setup() is:
if (all conditions to support IRQ are met) {
lots of code to support IRQs, which goes to a serious indentation
level.
}
return 0;
It makes more sense to handle this like this:
if (!all conditions to support IRQ are met)
return 0;
handle IRQ support
This commit does just this change, reducing by one tab the indentation
level of the IRQ setup code. Thanks to this reduced indentation level,
we are less restricted by the 80-column limit, and we can have more
function arguments on the same line.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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The probing of this driver calls platform_irq_count, which will
setup all of the IRQs that are configured in device tree. In
preparation for converting this driver to be a hierarchical IRQ
chip, hardcode the IRQ count based on the hardware type so that all
the IRQs are not configured immediately and are configured on an
as-needed basis later in the boot process. This change will also
allow for the removal of the interrupts property later in this
patch series once the hierarchical IRQ chip support is in.
This patch also removes the generic qcom,spmi-gpio OF match since we
don't know the number of pins. All of the existing upstream bindings
already include the more-specific binding.
The pm8941 code was tested on a LG Nexus 5 (hammerhead) phone.
Signed-off-by: Brian Masney <masneyb@onstation.org>
Reviewed-by: Stephen Boyd <sboyd@kernel.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Add support for qcom,pm8005-gpio, qcom,pm8998-gpio, and
qcom,pmi8998-gpio. These three variants are already in use in some
arm64 dtsi files. Those boards work since the generic binding
qcom,spmi-gpio is also specified.
Signed-off-by: Brian Masney <masneyb@onstation.org>
Reviewed-by: Stephen Boyd <sboyd@kernel.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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The Spreadtrum PMIC interrupt controller has no registers to set irq
trigger type, since it is always high level trigger. That means the
PMIC EIC controller as a child device of PMIC INTC does not need to
set the trigger type, so remove it.
Signed-off-by: Baolin Wang <baolin.wang@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Set proper output level base on the argument of direction_output.
Also remove sama5d2_piobu_set_direction() as there is only one caller
now.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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__acpi_gpio_update_gpiod_flags purpose is to make the gpiod_flags used
when requesting a GPIO match the restrictions from the ACPI resource,
as stored in acpi_gpio_info.flags.
But acpi_gpio_info.flags only contains direction info, and the
requester may have passed in special non-direction flags like
GPIOD_FLAGS_BIT_NONEXCLUSIVE, which we currently clobber.
This commit modifies __acpi_gpio_update_gpiod_flags to preserve these
special flags, so that a requested of an ACPI GPIO can e.g. pass
GPIOD_FLAGS_BIT_NONEXCLUSIV and have it work as intended.
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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struct gpio_chip documentation recommends to always implement this
callback function.
A more concrete motivation is to be able (in combination with
GPIOD_ASIS) to detect whether the bootloader has changed the state of a
GPIO signal.
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/bleung/chrome-platform
Pull chrome platform updates from Benson Leung:
- Changes for EC_MKBP_EVENT_SENSOR_FIFO handling.
- Also, maintainership changes. Olofj out, Enric balletbo in.
* tag 'tag-chrome-platform-for-v4.21' of git://git.kernel.org/pub/scm/linux/kernel/git/bleung/chrome-platform:
MAINTAINERS: add maintainers for ChromeOS EC sub-drivers
MAINTAINERS: platform/chrome: Add Enric as a maintainer
MAINTAINERS: platform/chrome: remove myself as maintainer
platform/chrome: don't report EC_MKBP_EVENT_SENSOR_FIFO as wakeup
platform/chrome: straighten out cros_ec_get_{next,host}_event() error codes
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Pull hwspinlock updates from Bjorn Andersson:
"This adds support for the hardware semaphores found in STM32MP1"
* tag 'hwlock-v4.21' of git://github.com/andersson/remoteproc:
hwspinlock: fix return value check in stm32_hwspinlock_probe()
hwspinlock: add STM32 hwspinlock device
dt-bindings: hwlock: Document STM32 hwspinlock bindings
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git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394
Pull firewire fixlet from Stefan Richter:
"Remove an explicit dependency in Kconfig which is implied by another
dependency"
* tag 'firewire-update' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394:
firewire: Remove depends on HAS_DMA in case of platform dependency
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Pull block updates and fixes from Jens Axboe:
- Pulled in MD changes that Shaohua had queued up for 4.21.
Unfortunately we lost Shaohua late 2018, I'm sending these in on his
behalf.
- In conjunction with the above, I added a CREDITS entry for Shaoua.
- sunvdc queue restart fix (Ming)
* tag 'for-linus-20190104' of git://git.kernel.dk/linux-block:
Add CREDITS entry for Shaohua Li
block: sunvdc: don't run hw queue synchronously from irq context
md: fix raid10 hang issue caused by barrier
raid10: refactor common wait code from regular read/write request
md: remvoe redundant condition check
lib/raid6: add option to skip algo benchmarking
lib/raid6: sort algos in rough performance order
lib/raid6: check for assembler SSSE3 support
lib/raid6: avoid __attribute_const__ redefinition
lib/raid6: add missing include for raid6test
md: remove set but not used variable 'bi_rdev'
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Pull drm fixes from Dave Airlie:
"Happy New Year, just decloaking from leave to get some stuff from the
last week in before rc1:
core:
- two regression fixes for damage blob and atomic
i915 gvt:
- Some missed GVT fixes from the original pull
amdgpu:
- new PCI IDs
- SR-IOV fixes
- DC fixes
- Vega20 fixes"
* tag 'drm-next-2019-01-05' of git://anongit.freedesktop.org/drm/drm: (53 commits)
drm: Put damage blob when destroy plane state
drm: fix null pointer dereference on null state pointer
drm/amdgpu: Add new VegaM pci id
drm/ttm: Use drm_debug_printer for all ttm_bo_mem_space_debug output
drm/amdgpu: add Vega20 PSP ASD firmware loading
drm/amd/display: Fix MST dp_blank REG_WAIT timeout
drm/amd/display: validate extended dongle caps
drm/amd/display: Use div_u64 for flip timestamp ns to ms
drm/amdgpu/uvd:Change uvd ring name convention
drm/amd/powerplay: add Vega20 LCLK DPM level setting support
drm/amdgpu: print process info when job timeout
drm/amdgpu/nbio7.4: add hw bug workaround for vega20
drm/amdgpu/nbio6.1: add hw bug workaround for vega10/12
drm/amd/display: Optimize passive update planes.
drm/amd/display: verify lane status before exiting verify link cap
drm/amd/display: Fix bug with not updating VSP infoframe
drm/amd/display: Add retry to read ddc_clock pin
drm/amd/display: Don't skip link training for empty dongle
drm/amd/display: Wait edp HPD to high in detect_sink
drm/amd/display: fix surface update sequence
...
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Pull rdma fixes from Jason Gunthorpe:
"Over the break a few defects were found, so this is a -rc style pull
request of various small things that have been posted.
- An attempt to shorten RCU grace period driven delays showed crashes
during heavier testing, and has been entirely reverted
- A missed merge/rebase error between the advise_mr and ib_device_ops
series
- Some small static analysis driven fixes from Julia and Aditya
- Missed ability to create a XRC_INI in the devx verbs interop
series"
* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma:
infiniband/qedr: Potential null ptr dereference of qp
infiniband: bnxt_re: qplib: Check the return value of send_message
IB/ipoib: drop useless LIST_HEAD
IB/core: Add advise_mr to the list of known ops
Revert "IB/mlx5: Fix long EEH recover time with NVMe offloads"
IB/mlx5: Allow XRC INI usage via verbs in DEVX context
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Pull fbdev updates from Bartlomiej Zolnierkiewicz:
"This time the pull request is really small.
The most notable changes are fixing fbcon to not cause crash on
unregister_framebuffer() operation when there is more than one
framebuffer, adding config option to center the bootup logo and making
FB_BACKLIGHT config option tristate (which in turn uncovered incorrect
FB_BACKLIGHT usage by DRM's nouveau driver).
Summary:
- fix fbcon to not cause crash on unregister_framebuffer() when there
is more than one framebuffer (Noralf Trønnes)
- improve support for small rotated displays (Peter Rosin)
- fix probe failure handling in udlfb driver (Dan Carpenter)
- add config option to center the bootup logo (Peter Rosin)
- make FB_BACKLIGHT config option tristate (Rob Clark)
- remove superfluous HAS_DMA dependency for goldfishfb driver (Geert
Uytterhoeven)
- misc fixes (Alexey Khoroshilov, YueHaibing, Colin Ian King, Lubomir
Rintel)
- misc cleanups (Yangtao Li, Wen Yang)
also there is DRM's nouveau driver fix for wrong FB_BACKLIGHT config
option usage (FB_BACKLIGHT is for internal fbdev subsystem use only)"
* tag 'fbdev-v4.21' of git://github.com/bzolnier/linux:
drm/nouveau: fix incorrect FB_BACKLIGHT usage in Kconfig
fbdev: fbcon: Fix unregister crash when more than one framebuffer
fbdev: Remove depends on HAS_DMA in case of platform dependency
pxa168fb: trivial typo fix
fbdev: fsl-diu: remove redundant null check on cmap
fbdev: omap2: omapfb: convert to DEFINE_SHOW_ATTRIBUTE
fbdev: uvesafb: fix spelling mistake "memoery" -> "memory"
fbdev: fbmem: add config option to center the bootup logo
fbdev: fbmem: make fb_show_logo_line return the end instead of the height
video: fbdev: pxafb: Fix "WARNING: invalid free of devm_ allocated data"
fbdev: fbmem: behave better with small rotated displays and many CPUs
video: clps711x-fb: release disp device node in probe()
fbdev: make FB_BACKLIGHT a tristate
udlfb: fix some inconsistent NULL checking
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git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
Pull i2c updates from Wolfram Sang:
"I2C has only driver updates for you this time.
Mostly new IDs/DT compatibles, also SPDX conversions, small cleanups.
STM32F7 got FastMode+ and PM support, Axxia some reliabilty
improvements"
* 'i2c/for-5.0' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: (26 commits)
i2c: Add Actions Semiconductor Owl family S700 I2C support
dt-bindings: i2c: Add S700 support for Actions Semi Soc's
i2c: ismt: Add support for Intel Cedar Fork
i2c: tegra: Switch to SPDX identifier
i2c: tegra: Add missing kerneldoc for some fields
i2c: tegra: Cleanup kerneldoc comments
i2c: axxia: support sequence command mode
dt-bindings: i2c: rcar: Add r8a774c0 support
dt-bindings: i2c: sh_mobile: Add r8a774c0 support
i2c: sh_mobile: Add support for r8a774c0 (RZ/G2E)
i2c: i2c-cros-ec-tunnel: Switch to SPDX identifier.
i2c: powermac: Use of_node_name_eq for node name comparisons
i2c-axxia: check for error conditions first
i2c-axxia: dedicated function to set client addr
dt-bindings: i2c: Use correct vendor prefix for Atmel
i2c: tegra: replace spin_lock_irqsave with spin_lock in ISR
eeprom: at24: add support for 24c2048
dt-bindings: eeprom: at24: add "atmel,24c2048" compatible string
i2c: i2c-stm32f7: add PM Runtime support
i2c: sh_mobile: add support for r8a77990 (R-Car E3)
...
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git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Pull PCI updates from Bjorn Helgaas:
- Remove unused lists from ASPM pcie_link_state (Frederick Lawler)
- Fix Broadcom CNB20LE host bridge unintended sign extension (Colin Ian
King)
- Expand Kconfig "PF" acronyms (Randy Dunlap)
- Update MAINTAINERS for arch/x86/kernel/early-quirks.c (Bjorn Helgaas)
- Add missing include to drivers/pci.h (Alexandru Gagniuc)
- Override Synopsys USB 3.x HAPS device class so dwc3-haps can claim it
instead of xhci (Thinh Nguyen)
- Clean up P2PDMA documentation (Randy Dunlap)
- Allow runtime PM even if driver doesn't supply callbacks (Jarkko
Nikula)
- Remove status check after submitting Switchtec MRPC Firmware Download
commands to avoid Completion Timeouts (Kelvin Cao)
- Set Switchtec coherent DMA mask to allow 64-bit DMA (Boris Glimcher)
- Fix Switchtec SWITCHTEC_IOCTL_EVENT_IDX_ALL flag overwrite issue
(Joey Zhang)
- Enable write combining for Switchtec MRPC Input buffers (Kelvin Cao)
- Add Switchtec MRPC DMA mode support (Wesley Sheng)
- Skip VF scanning on powerpc, which does this in firmware (Sebastian
Ott)
- Add Amlogic Meson PCIe controller driver and DT bindings (Yue Wang)
- Constify histb dw_pcie_host_ops structure (Julia Lawall)
- Support multiple power domains for imx6 (Leonard Crestez)
- Constify layerscape driver data (Stefan Agner)
- Update imx6 Kconfig to allow imx6 PCIe in imx7 kernel (Trent Piepho)
- Support armada8k GPIO reset (Baruch Siach)
- Support suspend/resume support on imx6 (Leonard Crestez)
- Don't hard-code DesignWare DBI/ATU offst (Stephen Warren)
- Skip i.MX6 PHY setup on i.MX7D (Andrey Smirnov)
- Remove Jianguo Sun from HiSilicon STB maintainers (Lorenzo Pieralisi)
- Mask DesignWare interrupts instead of disabling them to avoid lost
interrupts (Marc Zyngier)
- Add locking when acking DesignWare interrupts (Marc Zyngier)
- Ack DesignWare interrupts in the proper callbacks (Marc Zyngier)
- Use devm resource parser in mediatek (Honghui Zhang)
- Remove unused mediatek "num-lanes" DT property (Honghui Zhang)
- Add UniPhier PCIe controller driver and DT bindings (Kunihiko
Hayashi)
- Enable MSI for imx6 downstream components (Richard Zhu)
* tag 'pci-v4.21-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (40 commits)
PCI: imx: Enable MSI from downstream components
s390/pci: skip VF scanning
PCI/IOV: Add flag so platforms can skip VF scanning
PCI/IOV: Factor out sriov_add_vfs()
PCI: uniphier: Add UniPhier PCIe host controller support
dt-bindings: PCI: Add UniPhier PCIe host controller description
PCI: amlogic: Add the Amlogic Meson PCIe controller driver
dt-bindings: PCI: meson: add DT bindings for Amlogic Meson PCIe controller
arm64: dts: mt7622: Remove un-used property for PCIe
arm: dts: mt7623: Remove un-used property for PCIe
dt-bindings: PCI: MediaTek: Remove un-used property
PCI: mediatek: Remove un-used variant in struct mtk_pcie_port
MAINTAINERS: Remove Jianguo Sun from HiSilicon STB DWC entry
PCI: dwc: Don't hard-code DBI/ATU offset
PCI: imx: Add imx6sx suspend/resume support
PCI: armada8k: Add support for gpio controlled reset signal
PCI: dwc: Adjust Kconfig to allow IMX6 PCIe host on IMX7
PCI: dwc: layerscape: Constify driver data
PCI: imx: Add multi-pd support
PCI: Override Synopsys USB 3.x HAPS device class
...
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git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid
Pull HID updates from Jiri Kosina:
- high-resolution scrolling support that gracefully handles differences
between MS and Logitech implementations in HW, from Peter Hutterer
and Harry Cutts
- MSI IRQ support for intel-ish driver, from Song Hongyan
- support for new hardware (Cougar 700K, Odys Winbook 13, ASUS FX503VD,
ASUS T101HA) from Daniel M. Lambea, Hans de Goede and Aleix Roca
Nonell
- other small assorted fixups
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid: (22 commits)
HID: i2c-hid: Add Odys Winbook 13 to descriptor override
HID: lenovo: Add checks to fix of_led_classdev_register
HID: intel-ish-hid: add MSI interrupt support
HID: debug: Change to use DEFINE_SHOW_ATTRIBUTE macro
HID: doc: fix wrong data structure reference for UHID_OUTPUT
HID: intel-ish-hid: fixes incorrect error handling
HID: asus: Add support for the ASUS T101HA keyboard dock
HID: logitech: Use LDJ_DEVICE macro for existing Logitech mice
HID: logitech: Enable high-resolution scrolling on Logitech mice
HID: logitech: Add function to enable HID++ 1.0 "scrolling acceleration"
HID: logitech-hidpp: fix typo, hiddpp to hidpp
HID: input: use the Resolution Multiplier for high-resolution scrolling
HID: core: process the Resolution Multiplier
HID: core: store the collections as a basic tree
Input: add `REL_WHEEL_HI_RES` and `REL_HWHEEL_HI_RES`
HID: input: support Microsoft wireless radio control hotkey
HID: use macros in IS_INPUT_APPLICATION
HID: asus: Add support for the ASUS FX503VD laptop
HID: asus: Add event handler to catch unmapped Asus Vendor UsagePage codes
HID: cougar: Add support for Cougar 700K Gaming Keyboard
...
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git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux
Pull thermal management updates from Zhang Rui:
- Add locking for cooling device sysfs attribute in case the cooling
device state is changed by userspace and thermal framework
simultaneously. (Thara Gopinath)
- Fix a problem that passive cooling is reset improperly after system
suspend/resume. (Wei Wang)
- Cleanup the driver/thermal/ directory by moving intel and qcom
platform specific drivers to platform specific sub-directories. (Amit
Kucheria)
- Some trivial cleanups. (Lukasz Luba, Wolfram Sang)
* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux:
thermal/intel: fixup for Kconfig string parsing tightening up
drivers: thermal: Move QCOM_SPMI_TEMP_ALARM into the qcom subdir
drivers: thermal: Move various drivers for intel platforms into a subdir
thermal: Fix locking in cooling device sysfs update cur_state
Thermal: do not clear passive state during system sleep
thermal: zx2967_thermal: simplify getting .driver_data
thermal: st: st_thermal: simplify getting .driver_data
thermal: spear_thermal: simplify getting .driver_data
thermal: rockchip_thermal: simplify getting .driver_data
thermal: int340x_thermal: int3400_thermal: simplify getting .driver_data
thermal: remove unused function parameter
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git://git.kernel.org/pub/scm/linux/kernel/git/evalenti/linux-soc-thermal
Pull thermal SoC updates from Eduardo Valentin:
- Tegra DT binding documentation for Tegra194
- Armada now supports ap806 and cp110
- RCAR thermal now supports R8A774C0 and R8A77990
- Fixes on thermal_hwmon, IMX, generic-ADC, ST, RCAR, Broadcom,
Uniphier, QCOM, Tegra, PowerClamp, and Armada thermal drivers.
* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/evalenti/linux-soc-thermal: (22 commits)
thermal: generic-adc: Fix adc to temp interpolation
thermal: rcar_thermal: add R8A77990 support
dt-bindings: thermal: rcar-thermal: add R8A77990 support
thermal: rcar_thermal: add R8A774C0 support
dt-bindings: thermal: rcar-thermal: add R8A774C0 support
dt-bindings: cp110: document the thermal interrupt capabilities
dt-bindings: ap806: document the thermal interrupt capabilities
MAINTAINERS: thermal: add entry for Marvell MVEBU thermal driver
thermal: armada: add overheat interrupt support
thermal: st: fix Makefile typo
thermal: uniphier: Convert to SPDX identifier
thermal/intel_powerclamp: Change to use DEFINE_SHOW_ATTRIBUTE macro
thermal: tegra: soctherm: Change to use DEFINE_SHOW_ATTRIBUTE macro
dt-bindings: thermal: tegra-bpmp: Add Tegra194 support
thermal: imx: save one condition block for normal case of nvmem initialization
thermal: imx: fix for dependency on cpu-freq
thermal: tsens: qcom: do not create duplicate regmap debugfs entries
thermal: armada: Use PTR_ERR_OR_ZERO in armada_thermal_probe_legacy()
dt-bindings: thermal: rcar-gen3-thermal: All variants use 3 interrupts
thermal: broadcom: use devm_thermal_zone_of_sensor_register
...
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git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull vfs mount API prep from Al Viro:
"Mount API prereqs.
Mostly that's LSM mount options cleanups. There are several minor
fixes in there, but nothing earth-shattering (leaks on failure exits,
mostly)"
* 'mount.part1' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (27 commits)
mount_fs: suppress MAC on MS_SUBMOUNT as well as MS_KERNMOUNT
smack: rewrite smack_sb_eat_lsm_opts()
smack: get rid of match_token()
smack: take the guts of smack_parse_opts_str() into a new helper
LSM: new method: ->sb_add_mnt_opt()
selinux: rewrite selinux_sb_eat_lsm_opts()
selinux: regularize Opt_... names a bit
selinux: switch away from match_token()
selinux: new helper - selinux_add_opt()
LSM: bury struct security_mnt_opts
smack: switch to private smack_mnt_opts
selinux: switch to private struct selinux_mnt_opts
LSM: hide struct security_mnt_opts from any generic code
selinux: kill selinux_sb_get_mnt_opts()
LSM: turn sb_eat_lsm_opts() into a method
nfs_remount(): don't leak, don't ignore LSM options quietly
btrfs: sanitize security_mnt_opts use
selinux; don't open-code a loop in sb_finish_set_opts()
LSM: split ->sb_set_mnt_opts() out of ->sb_kern_mount()
new helper: security_sb_eat_lsm_opts()
...
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git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull more ARM SoC updates from Olof Johansson:
"A few updates that we merged late but are low risk for regressions for
other platforms (and a few other straggling patches):
- I mis-tagged the 'drivers' branch, and missed 3 patches. Merged in
here. They're for a driver for the PL353 SRAM controller and a
build fix for the qualcomm scm driver.
- A new platform, RDA Micro RDA8810PL (Cortex-A5 w/ integrated
Vivante GPU, 256MB RAM, Wifi). This includes some acked
platform-specific drivers (serial, etc). This also include DTs for
two boards with this SoC, OrangePi 2G and OrangePi i86.
- i.MX8 is another new platform (NXP, 4x Cortex-A53 + Cortex-M4, 4K
video playback offload). This is the first i.MX 64-bit SoC.
- Some minor updates to Samsung boards (adding a few peripherals in
DTs).
- Small rework for SMP bootup on STi platforms.
- A couple of TEE driver fixes.
- A couple of new config options (bcm2835 thermal, Uniphier MDMAC)
enabled in defconfigs"
* tag 'armsoc-late' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (27 commits)
ARM: multi_v7_defconfig: enable CONFIG_UNIPHIER_MDMAC
arm64: defconfig: Re-enable bcm2835-thermal driver
MAINTAINERS: Add entry for RDA Micro SoC architecture
tty: serial: Add RDA8810PL UART driver
ARM: dts: rda8810pl: Add interrupt support for UART
dt-bindings: serial: Document RDA Micro UART
ARM: dts: rda8810pl: Add timer support
ARM: dts: Add devicetree for OrangePi i96 board
ARM: dts: Add devicetree for OrangePi 2G IoT board
ARM: dts: Add devicetree for RDA8810PL SoC
ARM: Prepare RDA8810PL SoC
dt-bindings: arm: Document RDA8810PL and reference boards
dt-bindings: Add RDA Micro vendor prefix
ARM: sti: remove pen_release and boot_lock
arm64: dts: exynos: Add Bluetooth chip to TM2(e) boards
arm64: dts: imx8mq-evk: enable watchdog
arm64: dts: imx8mq: add watchdog devices
MAINTAINERS: add i.MX8 DT path to i.MX architecture
arm64: add support for i.MX8M EVK board
arm64: add basic DTS for i.MX8MQ
...
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git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fixes from Will Deacon:
"I'm safely chained back up to my desk, so please pull these arm64
fixes for -rc1 that address some issues that cropped up during the
merge window:
- Prevent KASLR from mapping the top page of the virtual address
space
- Fix device-tree probing of SDEI driver
- Fix incorrect register offset definition in Hisilicon DDRC PMU
driver
- Fix compilation issue with older binutils not liking unsigned
immediates
- Fix uapi headers so that libc can provide its own sigcontext
definition
- Fix handling of private compat syscalls
- Hook up compat io_pgetevents() syscall for 32-bit tasks
- Cleanup to arm64 Makefile (including now to avoid silly conflicts)"
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: compat: Hook up io_pgetevents() for 32-bit tasks
arm64: compat: Don't pull syscall number from regs in arm_compat_syscall
arm64: compat: Avoid sending SIGILL for unallocated syscall numbers
arm64/sve: Disentangle <uapi/asm/ptrace.h> from <uapi/asm/sigcontext.h>
arm64/sve: ptrace: Fix SVE_PT_REGS_OFFSET definition
drivers/perf: hisi: Fixup one DDRC PMU register offset
arm64: replace arm64-obj-* in Makefile with obj-*
arm64: kaslr: Reserve size of ARM64_MEMSTART_ALIGN in linear region
firmware: arm_sdei: Fix DT platform device creation
firmware: arm_sdei: fix wrong of_node_put() in init function
arm64: entry: remove unused register aliases
arm64: smp: Fix compilation error
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Pull ARM updates from Russell King:
"Included in this update:
- Florian Fainelli noticed that userspace segfaults caused by the
lack of kernel-userspace helpers was hard to diagnose; we now issue
a warning when userspace tries to use the helpers but the kernel
has them disabled.
- Ben Dooks wants compatibility for the old ATAG serial number with
DT systems.
- Some cleanup of assembly by Nicolas Pitre.
- User accessors optimisation from Vincent Whitchurch.
- More robust kdump on SMP systems from Yufen Wang.
- Sebastian Andrzej Siewior noticed problems with the SMP "boot_lock"
on RT kernels, and so we convert the Versatile series of platforms
to use a raw spinlock instead, consolidating the Versatile
implementation. We entirely remove the boot_lock on OMAP systems,
where it's unnecessary. Further patches for other systems will be
submitted for the following merge window.
- Start switching old StrongARM-11x0 systems to use gpiolib rather
than their private GPIO implementation - mostly PCMCIA bits.
- ARM Kconfig cleanups.
- Cleanup a mostly harmless mistake in the recent Spectre patch in
4.20 (which had the effect that data that can be placed into the
init sections was incorrectly always placed in the rodata section)"
* tag 'for-4.21' of git://git.armlinux.org.uk/~rmk/linux-arm: (25 commits)
ARM: omap2: remove unnecessary boot_lock
ARM: versatile: rename and comment SMP implementation
ARM: versatile: convert boot_lock to raw
ARM: vexpress/realview: consolidate immitation CPU hotplug
ARM: fix the cockup in the previous patch
ARM: sa1100/cerf: switch to using gpio_led_register_device()
ARM: sa1100/assabet: switch to using gpio leds
ARM: sa1100/assabet: add gpio keys support for right-hand two buttons
ARM: sa1111: remove legacy GPIO interfaces
pcmcia: sa1100*: remove redundant bvd1/bvd2 setting
ARM: pxa/lubbock: switch PCMCIA to MAX1600 library
ARM: pxa/mainstone: switch PCMCIA to MAX1600 library and gpiod APIs
ARM: sa1100/neponset: switch PCMCIA to MAX1600 library and gpiod APIs
ARM: sa1100/jornada720: switch PCMCIA to gpiod APIs
pcmcia: add MAX1600 library
ARM: sa1100: explicitly register sa11x0-pcmcia devices
ARM: 8813/1: Make aligned 2-byte getuser()/putuser() atomic on ARMv6+
ARM: 8812/1: Optimise copy_{from/to}_user for !CPU_USE_DOMAINS
ARM: 8811/1: always list both ldrd/strd registers explicitly
ARM: 8808/1: kexec:offline panic_smp_self_stop CPU
...
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Pull arch/csky updates from Guo Ren:
"Here are three main features (cpu_hotplug, basic ftrace, basic perf)
and some bugfixes:
Features:
- Add CPU-hotplug support for SMP
- Add ftrace with function trace and function graph trace
- Add Perf support
- Add EM_CSKY_OLD 39
- optimize kernel panic print.
- remove syscall_exit_work
Bugfixes:
- fix abiv2 mmap(... O_SYNC) failure
- fix gdb coredump error
- remove vdsp implement for kernel
- fix qemu failure to bootup sometimes
- fix ftrace call-graph panic
- fix device tree node reference leak
- remove meaningless header-y
- fix save hi,lo,dspcr regs in switch_stack
- remove unused members in processor.h"
* tag 'csky-for-linus-4.21' of git://github.com/c-sky/csky-linux:
csky: Add perf support for C-SKY
csky: Add EM_CSKY_OLD 39
clocksource/drivers/c-sky: fixup ftrace call-graph panic
csky: ftrace call graph supported.
csky: basic ftrace supported
csky: remove unused members in processor.h
csky: optimize kernel panic print.
csky: stacktrace supported.
csky: CPU-hotplug supported for SMP
clocksource/drivers/c-sky: fixup qemu fail to bootup sometimes.
csky: fixup save hi,lo,dspcr regs in switch_stack.
csky: remove syscall_exit_work
csky: fixup remove vdsp implement for kernel.
csky: bugfix gdb coredump error.
csky: fixup abiv2 mmap(... O_SYNC) failed.
csky: define syscall_get_arch()
elf-em.h: add EM_CSKY
csky: remove meaningless header-y
csky: Don't leak device tree node reference
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Merge more updates from Andrew Morton:
- procfs updates
- various misc bits
- lib/ updates
- epoll updates
- autofs
- fatfs
- a few more MM bits
* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (58 commits)
mm/page_io.c: fix polled swap page in
checkpatch: add Co-developed-by to signature tags
docs: fix Co-Developed-by docs
drivers/base/platform.c: kmemleak ignore a known leak
fs: don't open code lru_to_page()
fs/: remove caller signal_pending branch predictions
mm/: remove caller signal_pending branch predictions
arch/arc/mm/fault.c: remove caller signal_pending_branch predictions
kernel/sched/: remove caller signal_pending branch predictions
kernel/locking/mutex.c: remove caller signal_pending branch predictions
mm: select HAVE_MOVE_PMD on x86 for faster mremap
mm: speed up mremap by 20x on large regions
mm: treewide: remove unused address argument from pte_alloc functions
initramfs: cleanup incomplete rootfs
scripts/gdb: fix lx-version string output
kernel/kcov.c: mark write_comp_data() as notrace
kernel/sysctl: add panic_print into sysctl
panic: add options to print system info when panic happens
bfs: extra sanity checking and static inode bitmap
exec: separate MM_ANONPAGES and RLIMIT_STACK accounting
...
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Merge in a few missing patches from the pull request (my copy of the
branch was behind the staged version in linux-next).
* next/drivers:
memory: pl353: Add driver for arm pl353 static memory controller
dt-bindings: memory: Add pl353 smc controller devicetree binding information
firmware: qcom: scm: fix compilation error when disabled
Signed-off-by: Olof Johansson <olof@lixom.net>
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unreferenced object 0xffff808ec6dc5a80 (size 128):
comm "swapper/0", pid 1, jiffies 4294938063 (age 2560.530s)
hex dump (first 32 bytes):
ff ff ff ff 00 00 00 00 6b 6b 6b 6b 6b 6b 6b 6b ........kkkkkkkk
6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
backtrace:
[<00000000476dcf8c>] kmem_cache_alloc_trace+0x430/0x500
[<000000004f708d37>] platform_device_register_full+0xbc/0x1e8
[<000000006c2a7ec7>] acpi_create_platform_device+0x370/0x450
[<00000000ef135642>] acpi_default_enumeration+0x34/0x78
[<000000003bd9a052>] acpi_bus_attach+0x2dc/0x3e0
[<000000003cf4f7f2>] acpi_bus_attach+0x108/0x3e0
[<000000003cf4f7f2>] acpi_bus_attach+0x108/0x3e0
[<000000002968643e>] acpi_bus_scan+0xb0/0x110
[<0000000010dd0bd7>] acpi_scan_init+0x1a8/0x410
[<00000000965b3c5a>] acpi_init+0x408/0x49c
[<00000000ed4b9fe2>] do_one_initcall+0x178/0x7f4
[<00000000a5ac5a74>] kernel_init_freeable+0x9d4/0xa9c
[<0000000070ea6c15>] kernel_init+0x18/0x138
[<00000000fb8fff06>] ret_from_fork+0x10/0x1c
[<0000000041273a0d>] 0xffffffffffffffff
Then, faddr2line pointed out this line,
/*
* This memory isn't freed when the device is put,
* I don't have a nice idea for that though. Conceptually
* dma_mask in struct device should not be a pointer.
* See http://thread.gmane.org/gmane.linux.kernel.pci/9081
*/
pdev->dev.dma_mask =
kmalloc(sizeof(*pdev->dev.dma_mask), GFP_KERNEL);
Since this leak has existed for more than 8 years and it does not
reference other parts of the memory, let kmemleak ignore it, so users
don't need to waste time reporting this in the future.
Link: http://lkml.kernel.org/r/20181206160751.36211-1-cai@gmx.us
Signed-off-by: Qian Cai <cai@gmx.us>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: "Rafael J . Wysocki" <rafael.j.wysocki@intel.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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