Zero-length and one-element arrays are deprecated, see
Documentation/process/deprecated.rst
Flexible-array members should be used instead.

Generated by: scripts/coccinelle/misc/flexible_array.cocci

CC: Joey Gouly <joey.gouly@arm.com>
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: kernel test robot <lkp@intel.com>
Signed-off-by: Julia Lawall <julia.lawall@inria.fr>
Link: https://lore.kernel.org/r/alpine.DEB.2.22.394.2111271859250.2864@hadrienSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

All the other mtk_hw_get_value() calls have a check for "if (err)" so
we can add one here as well.  This silences a Smatch warning:

    drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c:819 mtk_pinconf_bias_get_rsel()
    error: uninitialized symbol 'pd'.

Fixes: fb34a9ae ("pinctrl: mediatek: support rsel feature")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/r/20211127140836.GB24002@kiliSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

The "try_all_type" variable is not set if (hw->soc->pull_type) is false
leading to the following Smatch warning:

    drivers/pinctrl/mediatek/pinctrl-paris.c:599 mtk_pctrl_show_one_pin()
    error: uninitialized symbol 'try_all_type'.

Fixes: fb34a9ae ("pinctrl: mediatek: support rsel feature")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/r/20211127140750.GA24002@kiliSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

Add the pinctrl driver support for i.MXRT1050.
Signed-off-by: Giulio Benetti <giulio.benetti@benettiengineering.com>
Signed-off-by: Jesse Taube <Mr.Bossman075@gmail.com>
Reviewed-by: Fabio Estevam <festevam@gmail.com>
Link: https://lore.kernel.org/r/20211125211443.1150135-5-Mr.Bossman075@gmail.comSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

Add i.MXRT1050 pinctrl binding doc

Cc: Giulio Benetti <giulio.benetti@benettiengineering.com>
Signed-off-by: Jesse Taube <Mr.Bossman075@gmail.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20211125211443.1150135-3-Mr.Bossman075@gmail.comSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

GPIO nodes are not themselves busses, so passing rockchip_bank_match
here is wrong.  Passing NULL instead uses the standard bus match table
which is more appropriate.

devm_of_platform_populate() shows that this is the normal way to call
of_platform_populate() from a device driver, so in order to match that
more closely also add the pinctrl device as the parent for the newly
created GPIO controllers.

Specifically, using the wrong match here can break dynamic GPIO hogs as
marking the GPIO bank as a bus means that of_platform_notify() will set
OF_POPULATED on new child nodes and if this happens before
of_gpio_notify() is called then the new hog will be skipped as
OF_POPULATED is already set.

Fixes: 9ce9a020 ("pinctrl/rockchip: drop the gpio related codes")
Signed-off-by: John Keeping <john@metanate.com>
Link: https://lore.kernel.org/r/20211126151352.1509583-1-john@metanate.comSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

This reverts commit 3fe59cc4.
The bindings were not properly reviewed and were also
causing errors in the automatic checkers once applied.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

If of_property_count_u32_elems returned 0, return -EINVAL to indicate
a failure. Previously this would return 0.

Fixes: a0f160ff ("pinctrl: add pinctrl/GPIO driver for Apple SoCs")
Signed-off-by: Joey Gouly <joey.gouly@arm.com>
Suggested-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20211121165642.27883-12-joey.gouly@arm.comSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

This expresses the intention clearer.
Signed-off-by: Joey Gouly <joey.gouly@arm.com>
Suggested-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20211121165642.27883-11-joey.gouly@arm.comSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

The gpio core code sets of_node, so no need to do it here.
Signed-off-by: Joey Gouly <joey.gouly@arm.com>
Suggested-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20211121165642.27883-10-joey.gouly@arm.comSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

Having this missing, but everything else valid shouldn't result
in a failure.
Signed-off-by: Joey Gouly <joey.gouly@arm.com>
Suggested-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20211121165642.27883-9-joey.gouly@arm.comSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

Signed-off-by: Joey Gouly <joey.gouly@arm.com>
Suggested-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20211121165642.27883-8-joey.gouly@arm.comSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

Try to make this more readable by not using a long line with
a ternary operator.
Signed-off-by: Joey Gouly <joey.gouly@arm.com>
Suggested-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20211121165642.27883-7-joey.gouly@arm.comSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

Explicitly return 0 if the regmap_read fails.
Also change a uint32_t to a u32.
Signed-off-by: Joey Gouly <joey.gouly@arm.com>
Suggested-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20211121165642.27883-6-joey.gouly@arm.comSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

This is needed for the BIT(n) macro.
Signed-off-by: Joey Gouly <joey.gouly@arm.com>
Suggested-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20211121165642.27883-5-joey.gouly@arm.comSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

This is the preferred comment style.
Signed-off-by: Joey Gouly <joey.gouly@arm.com>
Suggested-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20211121165642.27883-4-joey.gouly@arm.comSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

Add a missing comma at the end of the regmap initialisation.
Signed-off-by: Joey Gouly <joey.gouly@arm.com>
Suggested-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20211121165642.27883-3-joey.gouly@arm.comSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

Reflow some of the code now that the extra '_gpio' was removed.
Signed-off-by: Joey Gouly <joey.gouly@arm.com>
Suggested-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20211121165642.27883-2-joey.gouly@arm.comSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

Linux 5.16-rc2 is needed because nonurgent fixes headed
for next are strongly textually dependent on a fix that
was applied for rc2.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

Suggested-by: Ivaylo Ivanov <ivo.ivanov.ivanov1@gmail.com>
Signed-off-by: Dominik Kobinski <dominikkobinski314@gmail.com>
Link: https://lore.kernel.org/r/20211125215626.62447-1-dominikkobinski314@gmail.comSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

Adopt regmap instead of a direct memory map so that custom regmaps and
other interfaces can be supported.
Signed-off-by: Colin Foster <colin.foster@in-advantage.com>
Link: https://lore.kernel.org/r/20211119195928.2498441-5-colin.foster@in-advantage.comSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

In order to allow external control via SPI, memory-mapped areas must be
changed to use the generic regmap interface. This is step 1, and is
followed by an implementation that allows a custom regmap.
Signed-off-by: Colin Foster <colin.foster@in-advantage.com>
Link: https://lore.kernel.org/r/20211119195928.2498441-4-colin.foster@in-advantage.comSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

struct gpio_chip recommends passing -1 as base to gpiolib. Doing so avoids
conflicts when the chip is external and gpiochip0 already exists.
Signed-off-by: Colin Foster <colin.foster@in-advantage.com>
Tested-by: Clément Léger <clement.leger@bootlin.com>
Link: https://lore.kernel.org/r/20211119195928.2498441-3-colin.foster@in-advantage.comSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

Simple cleanup to make two function calls only one.
Signed-off-by: Colin Foster <colin.foster@in-advantage.com>
Link: https://lore.kernel.org/r/20211119195928.2498441-2-colin.foster@in-advantage.comSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

In arch/arm/boot/dts/uniphier-pinctrl.dtsi, there are child nodes of
pinctrl that defines pinmux and pincfg, however, there are no rules about
that in dt-bindings.

'make dtbs_check' results an error with the following message:

   pinctrl: 'ain1', 'ain2', 'ainiec1', 'aout', 'aout1', 'aout2', ...
   ... 'usb2', 'usb3' do not match any of the regexes: 'pinctrl-[0-9]+'

To avoid the issue, add the rules of pinmux and pincfg in each child node
and grandchild node.
Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/1636416699-21033-1-git-send-email-hayashi.kunihiko@socionext.comSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

Add compatible strings for pm2250 SPMI GPIO to documentation.
Signed-off-by: Loic Poulain <loic.poulain@linaro.org>
Link: https://lore.kernel.org/r/1637076915-3280-2-git-send-email-loic.poulain@linaro.orgSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

PM2250, commonly combined with QCM2290, provides ten SPMI GPIOs.
Signed-off-by: Loic Poulain <loic.poulain@linaro.org>
Link: https://lore.kernel.org/r/1637076915-3280-1-git-send-email-loic.poulain@linaro.orgSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

sc7280 supports the egpio feature, GPIOs ranging from 144 to 174
(31 GPIOs) support it, we define gpio_func to 9, which
is an unused function for all these pins on sc7280.
Signed-off-by: Rajendra Nayak <rnayak@codeaurora.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/1637041084-3299-2-git-send-email-rnayak@codeaurora.orgSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

egpio is a scheme which allows special power Island Domain IOs
(LPASS,SSC) to be reused as regular chip GPIOs by muxing regular
TLMM functions with Island Domain functions.
With this scheme, an IO can be controlled both by the cpu running
linux and the Island processor. This provides great flexibility to
re-purpose the Island IOs for regular TLMM usecases.

2 new bits are added to ctl_reg, egpio_present is a read only bit
which shows if egpio feature is available or not on a given gpio.
egpio_enable is the read/write bit and only effective if egpio_present
is 1. Once its set, the Island IO is controlled from Chip TLMM.
egpio_enable when set to 0 means the GPIO is used as Island Domain IO.

To support this we add a new function 'egpio' which can be used to
set the egpio_enable to 0, for any other TLMM controlled functions
we set the egpio_enable to 1.
Signed-off-by: Prasad Sodagudi <psodagud@codeaurora.org>
Signed-off-by: Rajendra Nayak <rnayak@codeaurora.org>
Link: https://lore.kernel.org/r/1637041084-3299-1-git-send-email-rnayak@codeaurora.orgSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

PM8019 provides 6 GPIOs. Add a compatible to support that.
Signed-off-by: Konrad Dybcio <konrad.dybcio@somainline.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20211112115342.17100-2-konrad.dybcio@somainline.orgSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

Add pmic-gpio compatible string for pm8019 pmic.
Signed-off-by: Konrad Dybcio <konrad.dybcio@somainline.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20211112115342.17100-1-konrad.dybcio@somainline.orgSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

Add initial Qualcomm SDX65 pinctrl driver to support pin configuration
with pinctrl framework for SDX65 SoC.
Signed-off-by: Vamsi Krishna Lanka <quic_vamslank@quicinc.com>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/13acb3cb36349487dee9745ab040d8f1344d2096.1637048107.git.quic_vamslank@quicinc.comSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

Add device tree binding Documentation details for Qualcomm SDX65
pinctrl driver.
Signed-off-by: Vamsi Krishna Lanka <quic_vamslank@quicinc.com>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/06234768890dc7572226f23d432e5a69a4d5b305.1637048107.git.quic_vamslank@quicinc.comSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

This patch extends pinctrl-ocelot driver to support also the
lan966x. Register layout is same as ocelot. It has 78 GPIOs.
Requires 3 registers ALT0, ALT1, ALT2 to configure ALT mode.
Signed-off-by: Kavyasree Kotagiri <kavyasree.kotagiri@microchip.com>
Reviewed-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Link: https://lore.kernel.org/r/20211118112548.14582-3-kavyasree.kotagiri@microchip.comSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

Add documentation for the compatible designated for lan966x.
Signed-off-by: Kavyasree Kotagiri <kavyasree.kotagiri@microchip.com>
Acked-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20211118112548.14582-2-kavyasree.kotagiri@microchip.comSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

Pull x86 fixes from Thomas Gleixner:

 - Move the command line preparation and the early command line parsing
   earlier so that the command line parameters which affect
   early_reserve_memory(), e.g. efi=nosftreserve, are taken into
   account. This was broken when the invocation of
   early_reserve_memory() was moved recently.

 - Use an atomic type for the SGX page accounting, which is read and
   written locklessly, to plug various race conditions related to it.

* tag 'x86-urgent-2021-11-21' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/sgx: Fix free page accounting
  x86/boot: Pull up cmdline preparation and early param parsing

Pull x86 perf fixes from Thomas Gleixner:

 - Remove unneded PEBS disabling when taking LBR snapshots to prevent an
   unchecked MSR access error.

 - Fix IIO event constraints for Snowridge and Skylake server chips.

* tag 'perf-urgent-2021-11-21' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/perf: Fix snapshot_branch_stack warning in VM
  perf/x86/intel/uncore: Fix IIO event constraints for Snowridge
  perf/x86/intel/uncore: Fix IIO event constraints for Skylake Server
  perf/x86/intel/uncore: Fix filter_tid mask for CHA events on Skylake Server

Pull more powerpc fixes from Michael Ellerman:

 - Fix a bug in copying of sigset_t for 32-bit systems, which caused X
   to not start.

 - Fix handling of shared LSIs (rare) with the xive interrupt controller
   (Power9/10).

 - Fix missing TOC setup in some KVM code, which could result in oopses
   depending on kernel data layout.

 - Fix DMA mapping when we have persistent memory and only one DMA
   window available.

 - Fix further problems with STRICT_KERNEL_RWX on 8xx, exposed by a
   recent fix.

 - A couple of other minor fixes.

Thanks to Alexey Kardashevskiy, Aneesh Kumar K.V, Cédric Le Goater,
Christian Zigotzky, Christophe Leroy, Daniel Axtens, Finn Thain, Greg
Kurz, Masahiro Yamada, Nicholas Piggin, and Uwe Kleine-König.

* tag 'powerpc-5.16-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
  powerpc/xive: Change IRQ domain to a tree domain
  powerpc/8xx: Fix pinned TLBs with CONFIG_STRICT_KERNEL_RWX
  powerpc/signal32: Fix sigset_t copy
  powerpc/book3e: Fix TLBCAM preset at boot
  powerpc/pseries/ddw: Do not try direct mapping with persistent memory and one window
  powerpc/pseries/ddw: simplify enable_ddw()
  powerpc/pseries/ddw: Revert "Extend upper limit for huge DMA window for persistent memory"
  powerpc/pseries: Fix numa FORM2 parsing fallback code
  powerpc/pseries: rename numa_dist_table to form2_distances
  powerpc: clean vdso32 and vdso64 directories
  powerpc/83xx/mpc8349emitx: Drop unused variable
  KVM: PPC: Book3S HV: Use GLOBAL_TOC for kvmppc_h_set_dabr/xdabr()

On 32-bit:

    fs/pstore/blk.c: In function ‘__best_effort_init’:
    include/linux/kern_levels.h:5:18: warning: format ‘%zu’ expects argument of type ‘size_t’, but argument 3 has type ‘long unsigned int’ [-Wformat=]
	5 | #define KERN_SOH "\001"  /* ASCII Start Of Header */
	  |                  ^~~~~~
    include/linux/kern_levels.h:14:19: note: in expansion of macro ‘KERN_SOH’
       14 | #define KERN_INFO KERN_SOH "6" /* informational */
	  |                   ^~~~~~~~
    include/linux/printk.h:373:9: note: in expansion of macro ‘KERN_INFO’
      373 |  printk(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)
	  |         ^~~~~~~~~
    fs/pstore/blk.c:314:3: note: in expansion of macro ‘pr_info’
      314 |   pr_info("attached %s (%zu) (no dedicated panic_write!)\n",
	  |   ^~~~~~~

Cc: stable@vger.kernel.org
Fixes: 7bb9557b ("pstore/blk: Use the normal block device I/O path")
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20210629103700.1935012-1-geert@linux-m68k.org
Cc: Jens Axboe <axboe@kernel.dk>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>