OSDN Git Service
Linus Walleij [Thu, 21 Feb 2019 11:58:31 +0000 (12:58 +0100)]
Merge branch 'ib-qcom-ssbi' into devel
Uwe Kleine-König [Fri, 15 Feb 2019 08:17:36 +0000 (09:17 +0100)]
Documentation: gpio: legacy: Don't use POLLERR for poll(2)
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>
Geert Uytterhoeven [Wed, 13 Feb 2019 13:15:03 +0000 (14:15 +0100)]
gpio: pca953x: Add wake-up support
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>
Linus Walleij [Wed, 20 Feb 2019 08:43:45 +0000 (09:43 +0100)]
Merge tag 'gpio-v5.1-updates-for-linus-part-2' of git://git./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
Linus Walleij [Tue, 19 Feb 2019 20:32:02 +0000 (21:32 +0100)]
gpio: tegra: Fix offset of pinctrl calls
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>
Bartosz Golaszewski [Thu, 17 Jan 2019 15:30:27 +0000 (16:30 +0100)]
gpio: mockup: rework debugfs interface
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>
Bartosz Golaszewski [Wed, 23 Jan 2019 08:34:15 +0000 (09:34 +0100)]
gpio: mockup: change the signature of unlocked get/set helpers
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>
Bartosz Golaszewski [Fri, 18 Jan 2019 17:08:59 +0000 (18:08 +0100)]
gpio: mockup: change the type of 'offset' to unsigned int
This field can never be negative.
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Bartosz Golaszewski [Thu, 17 Jan 2019 14:04:23 +0000 (15:04 +0100)]
gpio: mockup: don't create the debugfs link named after the label
User-space tests no longer use it and we're breaking the interface
anyway.
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Bartosz Golaszewski [Wed, 31 Oct 2018 14:01:40 +0000 (15:01 +0100)]
gpio: mockup: implement get_multiple()
We already support set_multiple(). Implement get_multiple() as well.
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Bartosz Golaszewski [Wed, 31 Oct 2018 13:55:47 +0000 (14:55 +0100)]
gpio: mockup: add locking
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>
Bartosz Golaszewski [Mon, 18 Feb 2019 16:32:03 +0000 (17:32 +0100)]
irq/irq_sim: add irq_set_type() callback
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>
Marek Vasut [Sat, 16 Feb 2019 13:46:27 +0000 (14:46 +0100)]
gpio: of: Apply regulator-gpio quirk only to enable-gpios
Since commit
d6cd33ad7102 ("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
a603a2b8d86e
("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>
Linus Walleij [Sun, 17 Feb 2019 21:02:06 +0000 (22:02 +0100)]
Merge tag 'intel-gpio-v5.1-1' of git://git./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()
Linus Walleij [Sun, 17 Feb 2019 20:59:33 +0000 (21:59 +0100)]
Merge tag 'gpio-v5.1-updates-for-linus' of git://git./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
Axel Lin [Wed, 23 Jan 2019 00:00:58 +0000 (08:00 +0800)]
gpio: altera-a10sr: Trivial coding style fix
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>
Thierry Reding [Wed, 23 Jan 2019 11:37:44 +0000 (12:37 +0100)]
gpio: tegra186: Use TEGRA186_ prefix for GPIO names
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>
Wolfram Sang [Thu, 17 Jan 2019 10:13:21 +0000 (11:13 +0100)]
Documentation: gpio: driver: fix wire name for I2C
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>
Charles Keepax [Wed, 16 Jan 2019 11:28:44 +0000 (11:28 +0000)]
gpio: madera: Add missing const
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>
Thomas Petazzoni [Thu, 3 Jan 2019 16:13:29 +0000 (17:13 +0100)]
gpio: pca953x: add support for pcal6416 type
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>
Thomas Petazzoni [Thu, 3 Jan 2019 16:13:28 +0000 (17:13 +0100)]
dt-bindings: gpio: pca953x: document the nxp,pcal6416
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>
Brian Masney [Thu, 14 Feb 2019 01:36:41 +0000 (20:36 -0500)]
qcom: ssbi-gpio: correct boundary conditions in pm8xxx_domain_translate
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>
Brian Masney [Thu, 14 Feb 2019 01:36:40 +0000 (20:36 -0500)]
mfd: pm8xxx: select IRQ_DOMAIN_HIERARCHY in Kconfig
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>
Brian Masney [Thu, 14 Feb 2019 01:36:39 +0000 (20:36 -0500)]
spmi: pmic-arb: select IRQ_DOMAIN_HIERARCHY in Kconfig
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>
Geert Uytterhoeven [Wed, 13 Feb 2019 13:14:09 +0000 (14:14 +0100)]
gpio: pcf857x: Simpify wake-up handling
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>
Linus Walleij [Thu, 14 Feb 2019 07:45:22 +0000 (08:45 +0100)]
Merge branch 'ib-pca953x-config' into devel
Gustavo A. R. Silva [Mon, 11 Feb 2019 18:50:01 +0000 (12:50 -0600)]
gpio: sprd: Add missing break in switch statement
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>
Thomas Petazzoni [Fri, 8 Feb 2019 10:40:46 +0000 (11:40 +0100)]
gpio: zynq: properly support runtime PM for GPIO used as interrupts
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>
Brian Masney [Fri, 8 Feb 2019 02:16:31 +0000 (21:16 -0500)]
mfd: pm8xxx: revert "disassociate old virq if hwirq mapping already exists"
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>
Linus Walleij [Fri, 8 Feb 2019 02:16:30 +0000 (21:16 -0500)]
ARM: dts: qcom-apq8060: Fix up interrupt parents
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>
Brian Masney [Fri, 8 Feb 2019 02:16:29 +0000 (21:16 -0500)]
arm: dts: qcom: mdm9615: add interrupt controller properties
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>
Brian Masney [Fri, 8 Feb 2019 02:16:28 +0000 (21:16 -0500)]
arm: dts: qcom: msm8660: add interrupt controller properties
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>
Brian Masney [Fri, 8 Feb 2019 02:16:27 +0000 (21:16 -0500)]
arm: dts: qcom: apq8064: add interrupt controller properties
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>
Brian Masney [Fri, 8 Feb 2019 02:16:26 +0000 (21:16 -0500)]
qcom: ssbi-gpio: add support for hierarchical IRQ chip
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>
Brian Masney [Fri, 8 Feb 2019 02:16:25 +0000 (21:16 -0500)]
mfd: pm8xxx: disassociate old virq if hwirq mapping already exists
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>
Brian Masney [Fri, 8 Feb 2019 02:16:24 +0000 (21:16 -0500)]
mfd: pm8xxx: convert to v2 irq interfaces to support hierarchical IRQ chips
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>
Linus Walleij [Fri, 8 Feb 2019 02:16:23 +0000 (21:16 -0500)]
genirq: introduce irq_chip_mask_ack_parent()
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>
Brian Masney [Fri, 8 Feb 2019 02:16:22 +0000 (21:16 -0500)]
genirq: introduce irq_domain_translate_twocell
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>
Brian Masney [Fri, 8 Feb 2019 02:16:21 +0000 (21:16 -0500)]
pinctrl: qcom: ssbi-gpio: hardcode IRQ counts
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>
Bjorn Andersson [Tue, 12 Feb 2019 03:52:05 +0000 (19:52 -0800)]
qcom: spmi-gpio: Fix boundary conditions IRQ domain translate
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>
Thomas Petazzoni [Thu, 7 Feb 2019 16:28:59 +0000 (17:28 +0100)]
gpio: pca953x: add ->set_config implementation
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>
Thomas Petazzoni [Thu, 7 Feb 2019 16:28:58 +0000 (17:28 +0100)]
gpio: add core support for pull-up/pull-down configuration
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>
Thomas Petazzoni [Thu, 7 Feb 2019 16:28:57 +0000 (17:28 +0100)]
gpio: use new gpio_set_config() helper in more places
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>
Thomas Petazzoni [Thu, 7 Feb 2019 16:28:56 +0000 (17:28 +0100)]
gpio: rename gpio_set_drive_single_ended() to gpio_set_config()
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>
Thomas Petazzoni [Thu, 7 Feb 2019 16:28:55 +0000 (17:28 +0100)]
dt-bindings: gpio: document the new pull-up/pull-down flags
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>
Randy Dunlap [Mon, 11 Feb 2019 06:28:24 +0000 (22:28 -0800)]
Documenation: driver-api: fix gpio/board.rst warning
Fix markup warning: insert a blank line before the list.
Documentation/driver-api/gpio/board.rst:209: WARNING: Unexpected indentation.
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Cc: linux-gpio@vger.kernel.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Linus Torvalds [Sun, 10 Feb 2019 22:42:20 +0000 (14:42 -0800)]
Linux 5.0-rc6
Linus Torvalds [Sun, 10 Feb 2019 18:39:37 +0000 (10:39 -0800)]
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
Linus Torvalds [Sun, 10 Feb 2019 17:57:42 +0000 (09:57 -0800)]
Merge branch 'x86-urgent-for-linus' of git://git./linux/kernel/git/tip/tip
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()
Linus Torvalds [Sun, 10 Feb 2019 17:54:19 +0000 (09:54 -0800)]
Merge branch 'irq-urgent-for-linus' of git://git./linux/kernel/git/tip/tip
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 Torvalds [Sun, 10 Feb 2019 17:48:18 +0000 (09:48 -0800)]
Merge branch 'perf-urgent-for-linus' of git://git./linux/kernel/git/tip/tip
Pull perf fixes from Ingo Molnar:
"A couple of kernel side fixes:
- Fix the Intel uncore driver on certain hardware configurations
- Fix a CPU hotplug related memory allocation bug
- Remove a spurious WARN()
... plus also a handful of perf tooling fixes"
* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf script python: Add Python3 support to tests/attr.py
perf trace: Support multiple "vfs_getname" probes
perf symbols: Filter out hidden symbols from labels
perf symbols: Add fallback definitions for GELF_ST_VISIBILITY()
tools headers uapi: Sync linux/in.h copy from the kernel sources
perf clang: Do not use 'return std::move(something)'
perf mem/c2c: Fix perf_mem_events to support powerpc
perf tests evsel-tp-sched: Fix bitwise operator
perf/core: Don't WARN() for impossible ring-buffer sizes
perf/x86/intel: Delay memory deallocation until x86_pmu_dead_cpu()
perf/x86/intel/uncore: Add Node ID mask
Linus Torvalds [Sun, 10 Feb 2019 17:44:52 +0000 (09:44 -0800)]
Merge branch 'locking-urgent-for-linus' of git://git./linux/kernel/git/tip/tip
Pull locking fixes from Ingo Molnar:
"An rtmutex (PI-futex) deadlock scenario fix, plus a locking
documentation fix"
* 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
futex: Handle early deadlock return correctly
futex: Fix barrier comment
Juergen Gross [Sun, 10 Feb 2019 07:40:56 +0000 (08:40 +0100)]
x86/mm: Make set_pmd_at() paravirt aware
set_pmd_at() calls native_set_pmd() unconditionally on x86. This was
fine as long as only huge page entries were written via set_pmd_at(),
as Xen pv guests don't support those.
Commit
2c91bd4a4e2e53 ("mm: speed up mremap by 20x on large regions")
introduced a usage of set_pmd_at() possible on pv guests, leading to
failures like:
BUG: unable to handle kernel paging request at
ffff888023e26778
#PF error: [PROT] [WRITE]
RIP: e030:move_page_tables+0x7c1/0xae0
move_vma.isra.3+0xd1/0x2d0
__se_sys_mremap+0x3c6/0x5b0
do_syscall_64+0x49/0x100
entry_SYSCALL_64_after_hwframe+0x44/0xa9
Make set_pmd_at() paravirt aware by just letting it use set_pmd().
Fixes:
2c91bd4a4e2e53 ("mm: speed up mremap by 20x on large regions")
Reported-by: Sander Eikelenboom <linux@eikelenboom.it>
Signed-off-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: xen-devel@lists.xenproject.org
Cc: boris.ostrovsky@oracle.com
Cc: sstabellini@kernel.org
Cc: hpa@zytor.com
Cc: bp@alien8.de
Cc: torvalds@linux-foundation.org
Link: https://lkml.kernel.org/r/20190210074056.11842-1-jgross@suse.com
Linus Torvalds [Sat, 9 Feb 2019 21:43:12 +0000 (13:43 -0800)]
Merge branch 'i2c/for-current' of git://git./linux/kernel/git/wsa/linux
Pull i2c fixes from Wolfram Sang:
"One PM related driver bugfix and a MAINTAINERS update"
* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
MAINTAINERS: Update the ocores i2c bus driver maintainer, etc
i2c: omap: Use noirq system sleep pm ops to idle device for suspend
Linus Torvalds [Sat, 9 Feb 2019 20:41:14 +0000 (12:41 -0800)]
Merge tag 'mips_fixes_5.0_3' of git://git./linux/kernel/git/mips/linux
Pull MIPS fixes from Paul Burton:
"A batch of MIPS fixes for 5.0, nothing too scary.
- A workaround for a Loongson 3 CPU bug is the biggest change, but
still fairly straightforward. It adds extra memory barriers (sync
instructions) around atomics to avoid a CPU bug that can break
atomicity.
- Loongson64 also sees a fix for powering off some systems which
would incorrectly reboot rather than waiting for the power down
sequence to complete.
- We have DT fixes for the Ingenic JZ4740 SoC & the JZ4780-based Ci20
board, and a DT warning fix for the Nexsys4/MIPSfpga board.
- The Cavium Octeon platform sees a further fix to the behaviour of
the pcie_disable command line argument that was introduced in v3.3.
- The VDSO, introduced in v4.4, sees build fixes for configurations
of GCC that were built using the --with-fp-32= flag to specify a
default 32-bit floating point ABI.
- get_frame_info() sees a fix for configurations with
CONFIG_KALLSYMS=n, for which it previously always returned an
error.
- If the MIPS Coherence Manager (CM) reports an error then we'll now
clear that error correctly so that the GCR_ERROR_CAUSE register
will be updated with information about any future errors"
* tag 'mips_fixes_5.0_3' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux:
mips: cm: reprime error cause
mips: loongson64: remove unreachable(), fix loongson_poweroff().
MIPS: Remove function size check in get_frame_info()
MIPS: Use lower case for addresses in nexys4ddr.dts
MIPS: Loongson: Introduce and use loongson_llsc_mb()
MIPS: VDSO: Include $(ccflags-vdso) in o32,n32 .lds builds
MIPS: VDSO: Use same -m%-float cflag as the kernel proper
MIPS: OCTEON: don't set octeon_dma_bar_type if PCI is disabled
DTS: CI20: Fix bugs in ci20's device tree.
MIPS: DTS: jz4740: Correct interrupt number of DMA core
Linus Torvalds [Sat, 9 Feb 2019 18:26:09 +0000 (10:26 -0800)]
Merge tag 'for-linus-
20190209' of git://git.kernel.dk/linux-block
Pull block fixes from Jens Axboe:
- NVMe pull request from Christoph, fixing namespace locking when
dealing with the effects log, and a rapid add/remove issue (Keith)
- blktrace tweak, ensuring requests with -1 sectors are shown (Jan)
- link power management quirk for a Smasung SSD (Hans)
- m68k nfblock dynamic major number fix (Chengguang)
- series fixing blk-iolatency inflight counter issue (Liu)
- ensure that we clear ->private when setting up the aio kiocb (Mike)
- __find_get_block_slow() rate limit print (Tetsuo)
* tag 'for-linus-
20190209' of git://git.kernel.dk/linux-block:
blk-mq: remove duplicated definition of blk_mq_freeze_queue
Blk-iolatency: warn on negative inflight IO counter
blk-iolatency: fix IO hang due to negative inflight counter
blktrace: Show requests without sector
fs: ratelimit __find_get_block_slow() failure message.
m68k: set proper major_num when specifying module param major_num
libata: Add NOLPM quirk for SAMSUNG MZ7TE512HMHP-000L1 SSD
nvme-pci: fix rapid add remove sequence
nvme: lock NS list changes while handling command effects
aio: initialize kiocb private in case any filesystems expect it.
Linus Torvalds [Sat, 9 Feb 2019 18:17:01 +0000 (10:17 -0800)]
Merge tag 'mtd/fixes-for-5.0-rc6' of git://git.infradead.org/linux-mtd
Pull mtd fixes from Boris Brezillon:
- Fix a problem with the imx28 ECC engine
- Remove a debug trace introduced in
2b6f0090a333 ("mtd: Check
add_mtd_device() ret code")
- Make sure partitions of size 0 can be registered
- Fix kernel-doc warning in the rawnand core
- Fix the error path of spinand_init() (missing manufacturer cleanup in
a few places)
- Address a problem with the SPI NAND PROGRAM LOAD operation which does
not work as expected on some parts.
* tag 'mtd/fixes-for-5.0-rc6' of git://git.infradead.org/linux-mtd:
mtd: rawnand: gpmi: fix MX28 bus master lockup problem
mtd: Make sure mtd->erasesize is valid even if the partition is of size 0
mtd: Remove a debug trace in mtdpart.c
mtd: rawnand: fix kernel-doc warnings
mtd: spinand: Fix the error/cleanup path in spinand_init()
mtd: spinand: Handle the case where PROGRAM LOAD does not reset the cache
Linus Torvalds [Sat, 9 Feb 2019 17:44:08 +0000 (09:44 -0800)]
Merge tag 'for-linus-5.0-rc6-tag' of git://git./linux/kernel/git/xen/tip
Pull xen fixes from Juergen Gross:
"Two very minor fixes: one remove of a #include for an unused header
and a fix of the xen ML address in MAINTAINERS"
* tag 'for-linus-5.0-rc6-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
MAINTAINERS: unify reference to xen-devel list
arch/arm/xen: Remove duplicate header
Ingo Molnar [Sat, 9 Feb 2019 12:13:45 +0000 (13:13 +0100)]
Merge tag 'perf-urgent-for-mingo-5.0-
20190205' of git://git./linux/kernel/git/acme/linux into perf/urgent
Pull perf/urgent fixes from Arnaldo Carvalho de Melo:
perf trace:
Arnaldo Carvalho de Melo:
Fix handling of probe:vfs_getname when the probed routine is
inlined in multiple places, fixing the collection of the 'filename'
parameter in open syscalls.
perf test:
Gustavo A. R. Silva:
Fix bitwise operator usage in evsel-tp-sched test, which made tat
test always detect fields as signed.
Jiri Olsa:
Filter out hidden symbols from labels, added in systems where the
annobin plugin is used, such as RHEL8, which, if left in place make
the DWARF unwind 'perf test' to fail on PPC.
Tony Jones:
Fix 'perf_event_attr' tests when building with python3.
perf mem/c2c:
Ravi Bangoria:
Fix perf_mem_events on PowerPC.
tools headers UAPI:
Arnaldo Carvalho de Melo:
Sync linux/in.h copy from the kernel sources, silencing a perf build warning.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Brian Masney [Fri, 8 Feb 2019 12:36:35 +0000 (07:36 -0500)]
spmi: pmic-arb: revert "validate type when mapping IRQ"
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>
Nikolaus Voss [Tue, 5 Feb 2019 13:31:11 +0000 (14:31 +0100)]
gpio: adp5588.c: Switch to events system
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>
Nikolaus Voss [Wed, 25 Jul 2018 08:43:57 +0000 (10:43 +0200)]
gpio: adp5588: Add device tree support
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>
Wei Yongjun [Fri, 1 Feb 2019 09:18:41 +0000 (09:18 +0000)]
gpio: tqmx86: Drop unnecessary gpiochip_remove in tqmx86_gpio_probe()
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>
Linus Walleij [Fri, 1 Feb 2019 20:41:31 +0000 (21:41 +0100)]
gpio: Add a Gateworks PLD GPIO driver
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>
Linus Torvalds [Sat, 9 Feb 2019 00:23:41 +0000 (16:23 -0800)]
Merge tag 'armsoc-fixes-5.0' of git://git./linux/kernel/git/soc/soc
Pull ARM SoC fixes from Arnd Bergmann:
"This is a bit larger than normal, as we had not managed to send out a
pull request before traveling for a week without my signing key.
There are multiple code fixes for older bugs, all of which should get
backported into stable kernels:
- tango: one fix for multiplatform configurations broken on other
platforms when tango is enabled
- arm_scmi: device unregistration fix
- iop32x: fix kernel oops from extraneous __init annotation
- pxa: remove a double kfree
- fsl qbman: close an interrupt clearing race
The rest is the usual collection of smaller fixes for device tree
files, on the renesas, allwinner, meson, omap, davinci, qualcomm and
imx platforms.
Some of these are for compile-time warnings, most are for board
specific functionality that fails to work because of incorrect
settings"
* tag 'armsoc-fixes-5.0' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (30 commits)
ARM: tango: Improve ARCH_MULTIPLATFORM compatibility
firmware: arm_scmi: provide the mandatory device release callback
ARM: iop32x/n2100: fix PCI IRQ mapping
arm64: dts: add msm8996 compatible to gicv3
ARM: dts: am335x-shc.dts: fix wrong cd pin level
ARM: dts: n900: fix mmc1 card detect gpio polarity
ARM: dts: omap3-gta04: Fix graph_port warning
ARM: pxa: ssp: unneeded to free devm_ allocated data
ARM: dts: r8a7743: Convert to new LVDS DT bindings
soc: fsl: qbman: avoid race in clearing QMan interrupt
arm64: dts: renesas: r8a77965: Enable DMA for SCIF2
arm64: dts: renesas: r8a7796: Enable DMA for SCIF2
arm64: dts: renesas: r8a774a1: Enable DMA for SCIF2
ARM: dts: da850: fix interrupt numbers for clocksource
dt-bindings: imx8mq: Number clocks consecutively
arm64: dts: meson: Fix mmc cd-gpios polarity
ARM: dts: imx6sx: correct backward compatible of gpt
ARM: dts: imx: replace gpio-key,wakeup with wakeup-source property
ARM: dts: vf610-bk4: fix incorrect #address-cells for dspi3
ARM: dts: meson8m2: mxiii-plus: mark the SD card detection GPIO active-low
...
Linus Torvalds [Sat, 9 Feb 2019 00:21:33 +0000 (16:21 -0800)]
Merge tag 'arm64-fixes' of git://git./linux/kernel/git/arm64/linux
Pull arm64 fixes from Will Deacon:
"Two arm64 fixes for -rc6. They resolve a kernel NULL dereference in
kexec and bogus kernel page table dumping when userspace is configured
for 52-bit virtual addressing.
Summary:
- Fix kernel oops when attemping kexec_file() with a NULL cmdline
- Fix page table output in debugfs when ARM64_USER_VA_BITS_52=y"
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: kexec_file: handle empty command-line
arm64: ptdump: Don't iterate kernel page tables using PTRS_PER_PXX
Linus Torvalds [Sat, 9 Feb 2019 00:04:12 +0000 (16:04 -0800)]
Merge tag 'powerpc-5.0-4' of git://git./linux/kernel/git/powerpc/linux
Pull powerpc fixes from Michael Ellerman:
"Just two fixes, both going to stable.
- Our support for split pmd page table lock had a bug which could
lead to a crash on mremap() when using the Radix MMU (Power9 only).
- A fix for the PAPR SCM driver (nvdimm) we added last release, which
had a bug where we might mis-handle a hypervisor response leading
to us failing to attach the memory region.
Thanks to: Aneesh Kumar K.V, Oliver O'Halloran"
* tag 'powerpc-5.0-4' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
powerpc/papr_scm: Use the correct bind address
powerpc/radix: Fix kernel crash with mremap()
Linus Torvalds [Fri, 8 Feb 2019 23:39:28 +0000 (15:39 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/ebiederm/user-namespace
Pull signal fixes from Eric Biederman:
"This contains four small fixes for signal handling. A missing range
check, a regression fix, prioritizing signals we have already started
a signal group exit for, and better detection of synchronous signals.
The confused decision of which signals to handle failed spectacularly
when a timer was pointed at SIGBUS and the stack overflowed. Resulting
in an unkillable process in an infinite loop instead of a SIGSEGV and
core dump"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace:
signal: Better detection of synchronous signals
signal: Always notice exiting tasks
signal: Always attempt to allocate siginfo for SIGSTOP
signal: Make siginmask safe when passed a signal of 0
Linus Torvalds [Fri, 8 Feb 2019 23:37:17 +0000 (15:37 -0800)]
Merge tag 'scsi-fixes' of git://git./linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"This is a set of five minor fixes (although, tecnhincally, the aicxxx
fix is for a major problem in that the driver won't load without it,
but I think the fact it's taken us since 4.10 to discover this
indicates that the user base for these things has declined)"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: cxlflash: Prevent deadlock when adapter probe fails
Revert "scsi: libfc: Add WARN_ON() when deleting rports"
scsi: sd_zbc: Fix zone information messages
scsi: target: make the pi_prot_format ConfigFS path readable
scsi: aic94xx: fix module loading
Linus Torvalds [Fri, 8 Feb 2019 23:34:10 +0000 (15:34 -0800)]
Merge tag 'iommu-fixes-v5.0-rc5' of git://git./linux/kernel/git/joro/iommu
Pull IOMMU fix from Joerg Roedel:
"Intel decided to leave the newly added Scalable Mode Feature
default-disabled for now. The patch here accomplishes that"
* tag 'iommu-fixes-v5.0-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu:
iommu/vt-d: Leave scalable mode default off
Linus Torvalds [Fri, 8 Feb 2019 23:32:10 +0000 (15:32 -0800)]
Merge tag 'pci-v5.0-fixes-4' of git://git./linux/kernel/git/helgaas/pci
Pull PCI fix from Bjorn Helgaas:
"Work around Synopsys duplicate Device ID (HAPS USB3, NXP i.MX) that
breaks PCIe on I.MX SoCs (Thinh Nguyen)"
* tag 'pci-v5.0-fixes-4' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
PCI: Work around Synopsys duplicate Device ID (HAPS USB3, NXP i.MX)
Linus Torvalds [Fri, 8 Feb 2019 23:30:02 +0000 (15:30 -0800)]
Merge tag 'acpi-5.0-rc6' of git://git./linux/kernel/git/rafael/linux-pm
Pull ACPI fix from Rafael Wysocki:
"This prevents excessive ACPI debug messages from being printed to the
kernel log, which has started to happen after one of the recent ACPICA
commits (Erik Schmauss)"
* tag 'acpi-5.0-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
ACPI: Set debug output flags independent of ACPICA
Andrew Lunn [Fri, 8 Feb 2019 16:56:31 +0000 (17:56 +0100)]
MAINTAINERS: Update the ocores i2c bus driver maintainer, etc
The listed maintainer has not been responding to emails for a while.
Add myself as a second maintainer.
Add the platform data include file, which was not listed.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Liu Bo [Fri, 25 Jan 2019 00:12:49 +0000 (08:12 +0800)]
blk-mq: remove duplicated definition of blk_mq_freeze_queue
As the prototype has been defined in "include/linux/blk-mq.h", the one
in "block/blk-mq.h" can be removed then.
Signed-off-by: Liu Bo <bo.liu@linux.alibaba.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Liu Bo [Fri, 25 Jan 2019 00:12:48 +0000 (08:12 +0800)]
Blk-iolatency: warn on negative inflight IO counter
This is to catch any unexpected negative value of inflight IO counter.
Signed-off-by: Liu Bo <bo.liu@linux.alibaba.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Liu Bo [Fri, 25 Jan 2019 00:12:47 +0000 (08:12 +0800)]
blk-iolatency: fix IO hang due to negative inflight counter
Our test reported the following stack, and vmcore showed that
->inflight counter is -1.
[
ffffc9003fcc38d0] __schedule at
ffffffff8173d95d
[
ffffc9003fcc3958] schedule at
ffffffff8173de26
[
ffffc9003fcc3970] io_schedule at
ffffffff810bb6b6
[
ffffc9003fcc3988] blkcg_iolatency_throttle at
ffffffff813911cb
[
ffffc9003fcc3a20] rq_qos_throttle at
ffffffff813847f3
[
ffffc9003fcc3a48] blk_mq_make_request at
ffffffff8137468a
[
ffffc9003fcc3b08] generic_make_request at
ffffffff81368b49
[
ffffc9003fcc3b68] submit_bio at
ffffffff81368d7d
[
ffffc9003fcc3bb8] ext4_io_submit at
ffffffffa031be00 [ext4]
[
ffffc9003fcc3c00] ext4_writepages at
ffffffffa03163de [ext4]
[
ffffc9003fcc3d68] do_writepages at
ffffffff811c49ae
[
ffffc9003fcc3d78] __filemap_fdatawrite_range at
ffffffff811b6188
[
ffffc9003fcc3e30] filemap_write_and_wait_range at
ffffffff811b6301
[
ffffc9003fcc3e60] ext4_sync_file at
ffffffffa030cee8 [ext4]
[
ffffc9003fcc3ea8] vfs_fsync_range at
ffffffff8128594b
[
ffffc9003fcc3ee8] do_fsync at
ffffffff81285abd
[
ffffc9003fcc3f18] sys_fsync at
ffffffff81285d50
[
ffffc9003fcc3f28] do_syscall_64 at
ffffffff81003c04
[
ffffc9003fcc3f50] entry_SYSCALL_64_after_swapgs at
ffffffff81742b8e
The ->inflight counter may be negative (-1) if
1) blk-iolatency was disabled when the IO was issued,
2) blk-iolatency was enabled before this IO reached its endio,
3) the ->inflight counter is decreased from 0 to -1 in endio()
In fact the hang can be easily reproduced by the below script,
H=/sys/fs/cgroup/unified/
P=/sys/fs/cgroup/unified/test
echo "+io" > $H/cgroup.subtree_control
mkdir -p $P
echo $$ > $P/cgroup.procs
xfs_io -f -d -c "pwrite 0 4k" /dev/sdg
echo "`cat /sys/block/sdg/dev` target=
1000000" > $P/io.latency
xfs_io -f -d -c "pwrite 0 4k" /dev/sdg
This fixes the problem by freezing the queue so that while
enabling/disabling iolatency, there is no inflight rq running.
Note that quiesce_queue is not needed as this only updating iolatency
configuration about which dispatching request_queue doesn't care.
Signed-off-by: Liu Bo <bo.liu@linux.alibaba.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Linus Torvalds [Fri, 8 Feb 2019 19:21:54 +0000 (11:21 -0800)]
Merge git://git./linux/kernel/git/davem/net
Pull networking fixes from David Miller:
"This pull request is dedicated to the upcoming snowpocalypse parts 2
and 3 in the Pacific Northwest:
1) Drop profiles are broken because some drivers use dev_kfree_skb*
instead of dev_consume_skb*, from Yang Wei.
2) Fix IWLWIFI kconfig deps, from Luca Coelho.
3) Fix percpu maps updating in bpftool, from Paolo Abeni.
4) Missing station release in batman-adv, from Felix Fietkau.
5) Fix some networking compat ioctl bugs, from Johannes Berg.
6) ucc_geth must reset the BQL queue state when stopping the device,
from Mathias Thore.
7) Several XDP bug fixes in virtio_net from Toshiaki Makita.
8) TSO packets must be sent always on queue 0 in stmmac, from Jose
Abreu.
9) Fix socket refcounting bug in RDS, from Eric Dumazet.
10) Handle sparse cpu allocations in bpf selftests, from Martynas
Pumputis.
11) Make sure mgmt frames have enough tailroom in mac80211, from Felix
Feitkau.
12) Use safe list walking in sctp_sendmsg() asoc list traversal, from
Greg Kroah-Hartman.
13) Make DCCP's ccid_hc_[rt]x_parse_options always check for NULL
ccid, from Eric Dumazet.
14) Need to reload WoL password into bcmsysport device after deep
sleeps, from Florian Fainelli.
15) Remove filter from mask before freeing in cls_flower, from Petr
Machata.
16) Missing release and use after free in error paths of s390 qeth
code, from Julian Wiedmann.
17) Fix lockdep false positive in dsa code, from Marc Zyngier.
18) Fix counting of ATU violations in mv88e6xxx, from Andrew Lunn.
19) Fix EQ firmware assert in qed driver, from Manish Chopra.
20) Don't default Caivum PTP to Y in kconfig, from Bjorn Helgaas"
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (116 commits)
net: dsa: b53: Fix for failure when irq is not defined in dt
sit: check if IPv6 enabled before calling ip6_err_gen_icmpv6_unreach()
geneve: should not call rt6_lookup() when ipv6 was disabled
net: Don't default Cavium PTP driver to 'y'
net: broadcom: replace dev_kfree_skb_irq by dev_consume_skb_irq for drop profiles
net: via-velocity: replace dev_kfree_skb_irq by dev_consume_skb_irq for drop profiles
net: tehuti: replace dev_kfree_skb_irq by dev_consume_skb_irq for drop profiles
net: sun: replace dev_kfree_skb_irq by dev_consume_skb_irq for drop profiles
net: fsl_ucc_hdlc: replace dev_kfree_skb_irq by dev_consume_skb_irq for drop profiles
net: fec_mpc52xx: replace dev_kfree_skb_irq by dev_consume_skb_irq for drop profiles
net: smsc: epic100: replace dev_kfree_skb_irq by dev_consume_skb_irq for drop profiles
net: dscc4: replace dev_kfree_skb_irq by dev_consume_skb_irq for drop profiles
net: tulip: de2104x: replace dev_kfree_skb_irq by dev_consume_skb_irq for drop profiles
net: defxx: replace dev_kfree_skb_irq by dev_consume_skb_irq for drop profiles
net/mlx5e: Don't overwrite pedit action when multiple pedit used
net/mlx5e: Update hw flows when encap source mac changed
qed*: Advance drivers version to 8.37.0.20
qed: Change verbosity for coalescing message.
qede: Fix system crash on configuring channels.
qed: Consider TX tcs while deriving the max num_queues for PF.
...
Linus Torvalds [Fri, 8 Feb 2019 18:56:31 +0000 (10:56 -0800)]
Merge tag 'char-misc-5.0-rc6' of git://git./linux/kernel/git/gregkh/char-misc
Pull char/misc fixes from Greg KH:
"Here are some small char and misc driver fixes for 5.0-rc6.
Nothing huge here, some more binderfs fixups found as people use it,
and there is a "large" selftest added to validate the binderfs code,
which makes up the majority of this pull request.
There's also some small mei and mic fixes to resolve some reported
issues.
All of these have been in linux-next for over a week with no reported
issues"
* tag 'char-misc-5.0-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
mic: vop: Fix crash on remove
mic: vop: Fix use-after-free on remove
binderfs: remove separate device_initcall()
fpga: stratix10-soc: fix wrong of_node_put() in init function
mic: vop: Fix broken virtqueues
mei: free read cb on ctrl_wr list flush
samples: mei: use /dev/mei0 instead of /dev/mei
mei: me: add ice lake point device id.
binderfs: respect limit on binder control creation
binder: fix CONFIG_ANDROID_BINDER_DEVICES
selftests: add binderfs selftests
Linus Torvalds [Fri, 8 Feb 2019 18:53:44 +0000 (10:53 -0800)]
Merge tag 'driver-core-5.0-rc6' of git://git./linux/kernel/git/gregkh/driver-core
Pull driver core fixes from Greg KH:
"Here are some driver core fixes for 5.0-rc6.
Well, not so much "driver core" as "debugfs". There's a lot of
outstanding debugfs cleanup patches coming in through different
subsystem trees, and in that process the debugfs core was found that
it really should return errors when something bad happens, to prevent
random files from showing up in the root of debugfs afterward. So
debugfs was fixed up to handle this properly, and then two fixes for
the relay and blk-mq code was needed as it was making invalid
assumptions about debugfs return values.
There's also a cacheinfo fix in here that resolves a tiny issue.
All of these have been in linux-next for over a week with no reported
problems"
* tag 'driver-core-5.0-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
blk-mq: protect debugfs_create_files() from failures
relay: check return of create_buf_file() properly
debugfs: debugfs_lookup() should return NULL if not found
debugfs: return error values, not NULL
debugfs: fix debugfs_rename parameter checking
cacheinfo: Keep the old value if of_property_read_u32 fails
Linus Torvalds [Fri, 8 Feb 2019 18:51:59 +0000 (10:51 -0800)]
Merge tag 'staging-5.0-rc6' of git://git./linux/kernel/git/gregkh/staging
Pull staging/IIO driver fixes from Greg KH:
"Here are some small iio and staging driver fixes for 5.0-rc6.
Nothing big, just resolve some reported IIO driver issues, and one
staging driver bug. One staging driver patch was added and then
reverted as well.
All of these have been in linux-next for a while with no reported
issues"
* tag 'staging-5.0-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
Revert "staging: erofs: keep corrupted fs from crashing kernel in erofs_namei()"
staging: erofs: keep corrupted fs from crashing kernel in erofs_namei()
staging: octeon: fix broken phylib usage
iio: ti-ads8688: Update buffer allocation for timestamps
tools: iio: iio_generic_buffer: make num_loops signed
iio: adc: axp288: Fix TS-pin handling
iio: chemical: atlas-ph-sensor: correct IIO_TEMP values to millicelsius
Linus Torvalds [Fri, 8 Feb 2019 18:49:55 +0000 (10:49 -0800)]
Merge tag 'tty-5.0-rc6' of git://git./linux/kernel/git/gregkh/tty
Pull tty/serial fixes from Greg KH:
"Here are some small tty and serial fixes for 5.0-rc6.
Nothing huge, just a few small fixes for reported issues. The speakup
fix is in here as it is a tty operation issue.
All of these have been in linux-next for a while with no reported
problems"
* tag 'tty-5.0-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
serial: fix race between flush_to_ldisc and tty_open
staging: speakup: fix tty-operation NULL derefs
serial: sh-sci: Do not free irqs that have already been freed
serial: 8250_pci: Make PCI class test non fatal
tty: serial: 8250_mtk: Fix potential NULL pointer dereference
Linus Torvalds [Fri, 8 Feb 2019 18:48:26 +0000 (10:48 -0800)]
Merge tag 'usb-5.0-rc6' of git://git./linux/kernel/git/gregkh/usb
Pull USB fixes from Grek KH:
"Here are some small USB fixes for 5.0-rc6.
Nothing huge, the normal amount of USB gadget fixes as well as some
USB phy fixes. There's also a typec fix as well. Full details are in
the shortlog.
All of these have been in linux-next for a while with no reported
issues"
* tag 'usb-5.0-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
usb: typec: tcpm: Correct the PPS out_volt calculation
usb: gadget: musb: fix short isoc packets with inventra dma
usb: phy: am335x: fix race condition in _probe
usb: dwc3: exynos: Fix error handling of clk_prepare_enable
usb: phy: fix link errors
usb: gadget: udc: net2272: Fix bitwise and boolean operations
usb: dwc3: gadget: Handle 0 xfer length for OUT EP
Linus Torvalds [Fri, 8 Feb 2019 18:46:14 +0000 (10:46 -0800)]
Merge tag 'xfs-5.0-fixes-1' of git://git./fs/xfs/xfs-linux
Pull xfs fixes from Darrick Wong:
"Here are a handful of XFS fixes to fix a data corruption problem, a
crasher bug, and a deadlock.
Summary:
- Fix cache coherency problem with writeback mappings
- Fix buffer deadlock when shutting fs down
- Fix a null pointer dereference when running online repair"
* tag 'xfs-5.0-fixes-1' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
xfs: set buffer ops when repair probes for btree type
xfs: end sync buffer I/O properly on shutdown error
xfs: eof trim writeback mapping as soon as it is cached
Linus Torvalds [Fri, 8 Feb 2019 18:43:15 +0000 (10:43 -0800)]
Merge tag 'drm-fixes-2019-02-08' of git://anongit.freedesktop.org/drm/drm
Pull drm fixes from Dave Airlie:
"Missed fixes last week as had nothing until amdgpu showed up on
Saturday. Other stuff has since rolled in along with some more amdgpu
fixes, so we have two weeks of those, and some i915, vmwgfx, sun4i,
rockchip and omap fixes.
amdgpu/radeon:
- fix crash on passthrough for SI
- fencing fix for shared buffers
- APU hwmon fix
- API powerplay fix
- eDP freesync fix
- PASID mgr locking fix
- KFD warning fix
- DC/powerplay fix
- raven revision ids fix
- vega20 doorbell fix
i915:
- SNB display fix
- SKL srckey mask fix
- ICL DDI clock selection fix
vmwgfx:
- DMA API fix
- IOMMU detection fix
- display fixes
sun4i:
- tcon clock fix
rockchip:
- SPDX identifier fix
omap:
- DSI fixes"
* tag 'drm-fixes-2019-02-08' of git://anongit.freedesktop.org/drm/drm: (28 commits)
drm/omap: dsi: Hack-fix DSI bus flags
drm/omap: dsi: Fix OF platform depopulate
drm/omap: dsi: Fix crash in DSI debug dumps
drm/i915: Try to sanitize bogus DPLL state left over by broken SNB BIOSen
drm/amd/display: Attach VRR properties for eDP connectors
drm/amdkfd: Fix if preprocessor statement above kfd_fill_iolink_info_for_cpu
drm/amdgpu: use spin_lock_irqsave to protect vm_manager.pasid_idr
drm/i915: always return something on DDI clock selection
drm/i915: Fix skl srckey mask bits
drm/vmwgfx: Improve on IOMMU detection
drm/vmwgfx: Fix setting of dma masks
drm/vmwgfx: Also check for crtc status while checking for DU active
drm/vmwgfx: Fix an uninitialized fence handle value
drm/vmwgfx: Return error code from vmw_execbuf_copy_fence_user
drm/sun4i: tcon: Prepare and enable TCON channel 0 clock at init
drm/amdgpu: fix the incorrect external id for raven series
drm/amdgpu: Implement doorbell self-ring for NBIO 7.4
drm/amd/display: Fix fclk idle state
drm/amdgpu: Transfer fences to dmabuf importer
drm/amd/powerplay: Fix missing break in switch
...
Lukas Bulwahn [Sat, 12 Jan 2019 09:07:23 +0000 (10:07 +0100)]
MAINTAINERS: unify reference to xen-devel list
In the linux kernel MAINTAINERS file, largely
"xen-devel@lists.xenproject.org (moderated for non-subscribers)"
is used to refer to the xen-devel mailing list.
The DRM DRIVERS FOR XEN section entry mentions
xen-devel@lists.xen.org instead, but that is just the same
mailing list as the mailing list above.
Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Signed-off-by: Juergen Gross <jgross@suse.com>
Andy Shevchenko [Tue, 6 Nov 2018 12:11:42 +0000 (14:11 +0200)]
gpio: wcove: Convert to use SPDX identifier
Reduce size of duplicated comments by switching to use SPDX identifier.
No functional change.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Andy Shevchenko [Tue, 6 Nov 2018 12:11:42 +0000 (14:11 +0200)]
gpio: msic: Convert to use SPDX identifier
Reduce size of duplicated comments by switching to use SPDX identifier.
No functional change.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Andy Shevchenko [Tue, 6 Nov 2018 12:11:42 +0000 (14:11 +0200)]
gpio: crystalcove: Convert to use SPDX identifier
Reduce size of duplicated comments by switching to use SPDX identifier.
No functional change.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
Andy Shevchenko [Tue, 29 Jan 2019 18:40:58 +0000 (20:40 +0200)]
gpio: wcove: Fix indentation
In some cases the indentation is inconsistent. Fix it accordingly.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Andy Shevchenko [Tue, 4 Sep 2018 11:26:25 +0000 (14:26 +0300)]
gpio: wcove: Sort headers alphabetically
Sort header block alphabetically for easy maintenance.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Andy Shevchenko [Tue, 4 Sep 2018 11:26:25 +0000 (14:26 +0300)]
gpio: msic: Sort headers alphabetically
Sort header block alphabetically for easy maintenance.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Andy Shevchenko [Tue, 4 Sep 2018 11:26:25 +0000 (14:26 +0300)]
gpio: crystalcove: Sort headers alphabetically
Sort header block alphabetically for easy maintenance.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
Andy Shevchenko [Tue, 29 Jan 2019 19:01:30 +0000 (21:01 +0200)]
gpio: msic: Remove duplicate check in IRQ handler
There is no need to check for non-zero pending since for_each_set_bit() does it
on the first iteration.
While here, drop redundant assignment.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Andy Shevchenko [Tue, 29 Jan 2019 18:37:28 +0000 (20:37 +0200)]
gpio: wcove: Allow return negative error code from to_reg()
The type of to_reg() is unsigned int while it might return
a negative error code. Callers are also expecting a signed type.
For sake of type consistency replace unsigned int with plain int.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Andy Shevchenko [Tue, 6 Nov 2018 12:38:55 +0000 (14:38 +0200)]
gpio: crystalcove: Use for_each_set_bit() in IRQ handler
This simplifies and standardizes the AB IRQ handler by using
the for_each_set_bit() library function.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
Peter Zijlstra [Fri, 8 Feb 2019 12:08:59 +0000 (13:08 +0100)]
x86/mm/cpa: Fix set_mce_nospec()
The recent commit
fe0937b24ff5 ("x86/mm/cpa: Fold cpa_flush_range() and
cpa_flush_array() into a single cpa_flush() function") accidentally made
the call to make_addr_canonical_again() go away, which breaks
set_mce_nospec().
Re-instate the call to convert the address back into canonical form right
before invoking either CLFLUSH or INVLPG. Rename the function while at it
to be shorter (and less MAGA).
Fixes:
fe0937b24ff5 ("x86/mm/cpa: Fold cpa_flush_range() and cpa_flush_array() into a single cpa_flush() function")
Reported-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Tony Luck <tony.luck@intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Rik van Riel <riel@surriel.com>
Link: https://lkml.kernel.org/r/20190208120859.GH32511@hirez.programming.kicks-ass.net
Thomas Gleixner [Tue, 29 Jan 2019 22:15:12 +0000 (23:15 +0100)]
futex: Handle early deadlock return correctly
commit
56222b212e8e ("futex: Drop hb->lock before enqueueing on the
rtmutex") changed the locking rules in the futex code so that the hash
bucket lock is not longer held while the waiter is enqueued into the
rtmutex wait list. This made the lock and the unlock path symmetric, but
unfortunately the possible early exit from __rt_mutex_proxy_start() due to
a detected deadlock was not updated accordingly. That allows a concurrent
unlocker to observe inconsitent state which triggers the warning in the
unlock path.
futex_lock_pi() futex_unlock_pi()
lock(hb->lock)
queue(hb_waiter) lock(hb->lock)
lock(rtmutex->wait_lock)
unlock(hb->lock)
// acquired hb->lock
hb_waiter = futex_top_waiter()
lock(rtmutex->wait_lock)
__rt_mutex_proxy_start()
---> fail
remove(rtmutex_waiter);
---> returns -EDEADLOCK
unlock(rtmutex->wait_lock)
// acquired wait_lock
wake_futex_pi()
rt_mutex_next_owner()
--> returns NULL
--> WARN
lock(hb->lock)
unqueue(hb_waiter)
The problem is caused by the remove(rtmutex_waiter) in the failure case of
__rt_mutex_proxy_start() as this lets the unlocker observe a waiter in the
hash bucket but no waiter on the rtmutex, i.e. inconsistent state.
The original commit handles this correctly for the other early return cases
(timeout, signal) by delaying the removal of the rtmutex waiter until the
returning task reacquired the hash bucket lock.
Treat the failure case of __rt_mutex_proxy_start() in the same way and let
the existing cleanup code handle the eventual handover of the rtmutex
gracefully. The regular rt_mutex_proxy_start() gains the rtmutex waiter
removal for the failure case, so that the other callsites are still
operating correctly.
Add proper comments to the code so all these details are fully documented.
Thanks to Peter for helping with the analysis and writing the really
valuable code comments.
Fixes:
56222b212e8e ("futex: Drop hb->lock before enqueueing on the rtmutex")
Reported-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Co-developed-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: linux-s390@vger.kernel.org
Cc: Stefan Liebler <stli@linux.ibm.com>
Cc: Sebastian Sewior <bigeasy@linutronix.de>
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/alpine.DEB.2.21.1901292311410.1950@nanos.tec.linutronix.de
Davidlohr Bueso [Wed, 6 Feb 2019 18:56:02 +0000 (10:56 -0800)]
futex: Fix barrier comment
The current comment for the barrier that guarantees that waiter increment
is always before taking the hb spinlock (barrier (A)) needs to be fixed as
it is misplaced.
This is obviously referring to hb_waiters_inc, which is a full barrier.
Reported-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Davidlohr Bueso <dbueso@suse.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/20190206185602.949-1-dave@stgolabs.net
Linus Walleij [Wed, 30 Jan 2019 20:31:55 +0000 (21:31 +0100)]
gpio: Add DT bindings for Gateworks PLD GPIO
This adds device tree bindings for the Gateworks PLD
GPIO chip, a simple I2C GPIO controller.
Cc: devicetree@vger.kernel.org
Cc: Imre Kaloz <kaloz@openwrt.org>
Cc: Tim Harvey <tharvey@gateworks.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Linus Walleij [Wed, 30 Jan 2019 20:20:05 +0000 (21:20 +0100)]
dt-bindings: Add a prefix for Gateworks Corporation
As I am adding a PLD GPIO driver for Gateworks, we need
their prefix among the vendors.
Cc: Imre Kaloz <kaloz@openwrt.org>
Cc: Tim Harvey <tharvey@gateworks.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>