According to the manpage of poll(2) and also looking at the respective
syscall providing POLLERR in .events is a no-op. So don't recommend
using it.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Reviewed-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Implement the irq_set_wake() method in the (optional) irq_chip of the
GPIO expander, and propagate wake-up settings to the upstream interrupt
controller. This allows GPIOs connected to a PCA953X GPIO expander to
serve as wake-up sources.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
- gpio-mockup updates improving the user-space testing interface and
adding line state tracking for correct edge interrupts
- interrupt simulator patch exposing the irq type configuration to
users
-----BEGIN PGP SIGNATURE-----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=mEAi
-----END PGP SIGNATURE-----
Merge tag 'gpio-v5.1-updates-for-linus-part-2' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux into devel
gpio: updates for v5.1 - part 2
- gpio-mockup updates improving the user-space testing interface and
adding line state tracking for correct edge interrupts
- interrupt simulator patch exposing the irq type configuration to
users
This patch hunk is a lightly modified version of a diff found
in a Tegra code dump from a product tree. It makes a lot of
sense because this is what most drivers do.
Cc: Thierry Reding <treding@nvidia.com>
Cc: Stefan Agner <stefan@agner.ch>
Cc: Dmitry Osipenko <digetx@gmail.com>
Cc: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Modify the way the debugfs interface works in gpio-mockup. Introduce
the concept of dummy pull config which will keep the mockup lines in
known state. The pull values can be modified by writing to the debugfs
files corresponding to lines. Lines in input mode always report the
current pull value, lines in output mode change the line value but
it will revert back to the one specified by current pull when released.
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
The unlocked variants only get called from places where we already have
the pointer to the underlying gpio_mockup_chip structure, so take it
as parameter instead of struct gpio_chip.
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
While no user reported any race condition problems with gpio-mockup,
let's be on the safe side and use a mutex when performing any changes
on the dummy chip structures.
Suggested-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Implement the irq_set_type() callback and call irqd_set_trigger_type()
internally so that users interested in the configured trigger type can
later retrieve it using irqd_get_trigger_type(). We only support edge
trigger types.
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Since commit d6cd33ad71 ("regulator: gpio: Convert to use descriptors")
the GPIO regulator had inverted the polarity of the control GPIO. This
problem manifested itself on systems with DT containing the following
description (snippet from salvator-common.dtsi):
gpios = <&gpio5 1 GPIO_ACTIVE_HIGH>;
gpios-states = <1>;
states = <3300000 1
1800000 0>;
Prior to the aforementioned commit, the gpio-regulator code used
gpio_request_array() to claim the GPIO(s) specified in the "gpios"
DT node, while the commit changed that to devm_gpiod_get_index().
The legacy gpio_request_array() calls gpio_request_one() and then
gpiod_request(), which parses the DT flags of the "gpios" node and
populates the GPIO descriptor flags field accordingly.
The new devm_gpiod_get_index() calls gpiod_get_index(), then
of_find_gpio(), of_get_named_gpiod_flags() with flags != NULL,
and then of_gpio_flags_quirks(). Since commit a603a2b8d8
("gpio: of: Add special quirk to parse regulator flags"),
of_gpio_flags_quirks() contains a quirk for regulator-gpio
which was never triggered by the legacy gpio_request_array()
code path, but is triggered by devm_gpiod_get_index() code
path.
This quirk checks whether a GPIO is associated with a fixed
or gpio-regulator and if so, checks two additional conditions.
First, whether such GPIO is active-low, and if so, ignores the
active-low flag. Second, whether the regulator DT node does
have an "enable-active-high" property and if the property is
NOT present, sets the GPIO flags as active-low.
The second check triggers a problem, since it is applied to all
GPIOs associated with a gpio-regulator, rather than only on the
"enable" GPIOs, as the old code did. This changes the way the
gpio-regulator interprets the DT description of the control
GPIOs.
The old code using gpio_request_array() explicitly parsed the
"enable-active-high" DT property and only applied it to the
GPIOs described in the "enable-gpios" DT node, and only if
those were present.
This patch fixes the quirk code by only applying the quirk
to "enable-gpios", thus restoring the old behavior.
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Geert Uytterhoeven <geert+renesas@glider.be>
Cc: Jan Kotas <jank@cadence.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Mark Brown <broonie@kernel.org>
Cc: Wolfram Sang <wsa+renesas@sang-engineering.com>
Cc: linux-renesas-soc@vger.kernel.org
To: linux-gpio@vger.kernel.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Small clean up for Intel PMIC GPIO drivers, includes:
- optimizing IRQ handlers by usage of for_each_set_bit()
- sorting headers alphabetically for better maintenance
- conversion to SPDX identifier
The following is an automated git shortlog grouped by driver:
crystalcove:
- Convert to use SPDX identifier
- Sort headers alphabetically
- Use for_each_set_bit() in IRQ handler
msic:
- Convert to use SPDX identifier
- Sort headers alphabetically
- Remove duplicate check in IRQ handler
wcove:
- Convert to use SPDX identifier
- Fix indentation
- Sort headers alphabetically
- Allow return negative error code from to_reg()
-----BEGIN PGP SIGNATURE-----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=ScJF
-----END PGP SIGNATURE-----
Merge tag 'intel-gpio-v5.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/andy/linux-gpio-intel into devel
intel-gpio for v5.1-1
Small clean up for Intel PMIC GPIO drivers, includes:
- optimizing IRQ handlers by usage of for_each_set_bit()
- sorting headers alphabetically for better maintenance
- conversion to SPDX identifier
The following is an automated git shortlog grouped by driver:
crystalcove:
- Convert to use SPDX identifier
- Sort headers alphabetically
- Use for_each_set_bit() in IRQ handler
msic:
- Convert to use SPDX identifier
- Sort headers alphabetically
- Remove duplicate check in IRQ handler
wcove:
- Convert to use SPDX identifier
- Fix indentation
- Sort headers alphabetically
- Allow return negative error code from to_reg()
- support for a new variant of pca953x
- documentation fix from Wolfram
- some tegra186 name changes
- two minor fixes for madera and altera-a10sr
-----BEGIN PGP SIGNATURE-----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=nV64
-----END PGP SIGNATURE-----
Merge tag 'gpio-v5.1-updates-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux into devel
gpio updates for v5.1
- support for a new variant of pca953x
- documentation fix from Wolfram
- some tegra186 name changes
- two minor fixes for madera and altera-a10sr
Change the coding style to make it does error checking first.
This also fixes checkpatch warning about line over 80 characters.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Tested by: Thor Thayer <thor.thayer@linux.intel.com>
Reviewed by: Thor Thayer <thor.thayer@linux.intel.com>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
The new prefix allows the GPIOs to be uniquely identified on a per-chip
basis, which makes it easier to distinguish Tegra186 specific GPIOs from
those of later chips such as Tegra194 which supports a very different
set of GPIOs.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Typo: the data line is called "SDA" not "SCA".
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
madera_gpio_chip is only used as a template so it can be marked as const.
Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
The NXP PCAL6416, documented at [1], is a variant of the PCA GPIO
expander with 16 GPIOs, and supporting an interrupt and the "extended"
features for interrupt, pull-up/pull-down configuration, etc.
[1] https://www.nxp.com/docs/en/data-sheet/PCAL6416A.pdf
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
The NXP PCAL6416 is a variant of the PCA GPIO expander, with 16 GPIOs.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
SSBI GPIOs are numbered 1..ngpio, so the boundary check in
pm8xxx_domain_translate() is off by one. This patch corrects that check.
Signed-off-by: Brian Masney <masneyb@onstation.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Select IRQ_DOMAIN_HIERARCHY for pm8xxx in Kconfig since this driver uses
the version 2 IRQ interfaces. IRQ_DOMAIN_HIERARCHY selects IRQ_DOMAIN,
so it can be removed from here.
Signed-off-by: Brian Masney <masneyb@onstation.org>
Acked-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Select IRQ_DOMAIN_HIERARCHY for pmic-arb in Kconfig since this driver
uses the version 2 IRQ interfaces. IRQ_DOMAIN_HIERARCHY selects
IRQ_DOMAIN, so it can be removed from here.
Signed-off-by: Brian Masney <masneyb@onstation.org>
Reported-by: Randy Dunlap <rdunlap@infradead.org>
Acked-by: Randy Dunlap <rdunlap@infradead.org> # build-tested
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Unlike gpio_rcar_irq_set_wake(), which this solution was based on,
pcf857x_irq_set_wake() does not need to do anything else than calling
irq_set_irq_wake() for the upstream interrupt controller. Hence there
is no reason for making this call conditional, and no longer a need for
keeping a copy of the interrupt number that also serves as a flag.
Just propagate irq_set_irq_wake() to the upstream interrupt controller,
using the original interrupt number.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Fix the following warning by adding a missing break:
drivers/gpio/gpio-eic-sprd.c: In function ‘sprd_eic_irq_set_type’:
drivers/gpio/gpio-eic-sprd.c:403:3: warning: this statement may fall through [-Wimplicit-fallthrough=]
switch (flow_type) {
^~~~~~
drivers/gpio/gpio-eic-sprd.c:435:2: note: here
default:
^~~~~~~
This patch is part of the ongoing efforts to enable
-Wimplicit-fallthrough.
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Reviewed-by: Baolin Wang <baolin.wang@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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>
Now that ssbi-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.
This change was tested on an APQ8060 DragonBoard.
Signed-off-by: Brian Masney <masneyb@onstation.org>
Tested-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Before we fixed up the interrupt hierarchy for the SSBI
GPIO controller, we had to use the PM8058 directly to pick
interrupts. After making the interrupt controller work properly,
we can reference the real interrupt parent.
Signed-off-by: Brian Masney <masneyb@onstation.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Add interrupt controller properties now that ssbi-gpio is a proper
hierarchical IRQ chip. The interrupts property is no longer needed so
remove it.
Note that the IRQs started at 24 instead of 192 like all of the other
PMICs. This is the same IRQs as the MPP for this board. qcom-pm8xxx.c
doesn't set the shared IRQs so this is highly likely to be a copy and
paste error.
Signed-off-by: Brian Masney <masneyb@onstation.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Add interrupt controller properties now that ssbi-gpio is a proper
hierarchical IRQ chip. The interrupts property is no longer needed so
remove it.
This change was tested on an APQ8060 DragonBoard.
Signed-off-by: Brian Masney <masneyb@onstation.org>
Tested-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Add interrupt controller properties now that ssbi-gpio is a proper
hierarchical IRQ chip. The interrupts property is no longer needed so
remove it.
This change was not tested on any hardware but the same change was
tested on an APQ8060 DragonBoard with no issues.
Signed-off-by: Brian Masney <masneyb@onstation.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
ssbi-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 ssbi-gpio code to correct this
issue.
The constant PM8XXX_GPIO_PHYSICAL_OFFSET is introduced to replace the
hardcoded '1' that previously existed in two places in this driver to
improve code readability.
This change was tested on an APQ8060 DragonBoard.
Signed-off-by: Brian Masney <masneyb@onstation.org>
Tested-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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
ssbi-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 ssbi-gpio are all initially setup without an IRQ hierarchy
this driver is probed due to the interrupts property in device tree.
Once ssbi-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 ssbi-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.
This change was tested on an APQ8060 DragonBoard.
Signed-off-by: Brian Masney <masneyb@onstation.org>
Tested-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Convert the PM8XXX IRQ code to use the version 2 IRQ interface in order
to support hierarchical IRQ chips. This is necessary so that ssbi-gpio
can be setup as a hierarchical IRQ chip with PM8xxx as the parent. IRQ
chips in device tree should be usable from the start without having to
make an additional call to gpio[d]_to_irq() to get the proper IRQ on the
parent.
pm8821_irq_domain_ops and pm8821_irq_domain_map are removed by this
patch since the irq_chip is now contained in the pm_irq_data struct, and
that allows us to use a common IRQ mapping function.
This change was tested on an APQ8060 DragonBoard.
Signed-off-by: Brian Masney <masneyb@onstation.org>
Tested-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
The hierarchical irqchip never before ran into a situation
where the parent is not "simple", i.e. does not implement
.irq_ack() and .irq_mask() like most, but the qcom-pm8xxx.c
happens to implement only .irq_mask_ack().
Since we want to make ssbi-gpio a hierarchical child of this
irqchip, it must *also* only implement .irq_mask_ack()
and call down to the parent, and for this we of course
need irq_chip_mask_ack_parent().
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Brian Masney <masneyb@onstation.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Add a new function irq_domain_translate_twocell() that is to be used as
the translate function in struct irq_domain_ops for the v2 IRQ API.
This patch also changes irq_domain_xlate_twocell() from the v1 IRQ API
to call irq_domain_translate_twocell() in the v2 IRQ API. This required
changes to of_phandle_args_to_fwspec()'s arguments so that it can be
called from multiple places.
Cc: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Brian Masney <masneyb@onstation.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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,ssbi-gpio OF match since we
don't know the number of pins. All of the existing upstream bindings
already include the more-specific binding.
This change was tested on an APQ8060 DragonBoard.
Signed-off-by: Brian Masney <masneyb@onstation.org>
Tested-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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: ca69e2d165 ("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>
This commit adds a minimal implementation of the ->set_config() hook,
with support for the PIN_CONFIG_BIAS_PULL_UP and
PIN_CONFIG_BIAS_PULL_DOWN configurations.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit adds support for configuring the pull-up and pull-down
resistors available in some GPIO controllers. While configuring
pull-up/pull-down is already possible through the pinctrl subsystem,
some GPIO controllers, especially simple ones such as GPIO expanders
on I2C, don't have any pinmuxing capability and therefore do not use
the pinctrl subsystem.
This commit implements the GPIO_PULL_UP and GPIO_PULL_DOWN flags,
which can be used from the Device Tree, to enable a pull-up or
pull-down resistor on a given GPIO.
The flag is simply propagated all the way to the core GPIO subsystem,
where it is used to call the gpio_chip ->set_config callback with the
appropriate existing PIN_CONFIG_BIAS_* values.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
As suggested by Linus Walleij, let's use the new gpio_set_config()
helper in gpiod_set_debounce() and gpiod_set_transitory().
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit simply renames gpio_set_drive_single_ended() to
gpio_set_config(), as the function is not specific to setting the GPIO
drive type, and will be used for other purposes in followup commits.
In addition, it moves the function above gpiod_direction_input(), as
it will be used from gpiod_direction_input().
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit extends the flags that can be used in GPIO specifiers to
indicate if a pull-up resistor or pull-down resistor should be
enabled.
While some pinctrl DT bindings already offer the capability of
configuring pull-up/pull-down resistors at the pin level, a number of
simple GPIO controllers don't have any pinmuxing capability, and
therefore do not rely on the pinctrl DT bindings.
Such simple GPIO controllers however sometimes allow to configure
pull-up and pull-down resistors on a per-pin basis, and whether such
resistors should be enabled or not is a highly board-specific HW
characteristic.
By using two additional bits of the GPIO flag specifier, we can easily
allow the Device Tree to describe which GPIOs should have their
pull-up or pull-down resistors enabled. Even though the two options
are mutually exclusive, we still need two bits to encode at least
three states: no pull-up/pull-down, pull-up, pull-down.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
dmaengine fixes for v5.0-rc6
- Fix in at_xdmac fr wrongful channel state
- Fix for imx driver for wrong callback invocation
- Fix to bcm driver for interrupt race & transaction abort.
- Fix in dmatest to abort in mapping error
-----BEGIN PGP SIGNATURE-----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=NTGY
-----END PGP SIGNATURE-----
Merge tag 'dmaengine-fix-5.0-rc6' of git://git.infradead.org/users/vkoul/slave-dma
Pull dmaengine fixes from Vinod Koul:
- Fix in at_xdmac fr wrongful channel state
- Fix for imx driver for wrong callback invocation
- Fix to bcm driver for interrupt race & transaction abort.
- Fix in dmatest to abort in mapping error
* tag 'dmaengine-fix-5.0-rc6' of git://git.infradead.org/users/vkoul/slave-dma:
dmaengine: dmatest: Abort test in case of mapping error
dmaengine: bcm2835: Fix abort of transactions
dmaengine: bcm2835: Fix interrupt race on RT
dmaengine: imx-dma: fix wrong callback invoke
dmaengine: at_xdmac: Fix wrongfull report of a channel as in use
Pull x86 fixes from Ingo Molnar:
"A handful of fixes:
- Fix an MCE corner case bug/crash found via MCE injection testing
- Fix 5-level paging boot crash
- Fix MCE recovery cache invalidation bug
- Fix regression on Xen guests caused by a recent PMD level mremap
speedup optimization"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/mm: Make set_pmd_at() paravirt aware
x86/mm/cpa: Fix set_mce_nospec()
x86/boot/compressed/64: Do not corrupt EDX on EFER.LME=1 setting
x86/MCE: Initialize mce.bank in the case of a fatal error in mce_no_way_out()
Pull irq fixes from Ingo Molnar:
"irqchip driver fixes: most of them are race fixes for ARM GIC (General
Interrupt Controller) variants, but also a fix for the ARM MMP
(Marvell PXA168 et al) irqchip affecting OLPC keyboards"
* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
irqchip/gic-v3-its: Fix ITT_entry_size accessor
irqchip/mmp: Only touch the PJ4 IRQ & FIQ bits on enable/disable
irqchip/gic-v3-its: Gracefully fail on LPI exhaustion
irqchip/gic-v3-its: Plug allocation race for devices sharing a DevID
irqchip/gic-v4: Fix occasional VLPI drop
Linus Walleij
Uwe Kleine-König
Geert Uytterhoeven
Bartosz Golaszewski
Marek Vasut
Axel Lin
Thierry Reding
Wolfram Sang
Charles Keepax
Thomas Petazzoni
Brian Masney
Gustavo A. R. Silva
Bjorn Andersson
Randy Dunlap
Linus Torvalds