Each function parameter should be documented in kerneldoc format.

Squashes the following W=1 warnings:

 drivers/mfd/db8500-prcmu.c:2281: warning: Function parameter or member 'reset_code' not described in 'db8500_prcmu_system_reset'
 drivers/mfd/db8500-prcmu.c:3012: warning: Function parameter or member 'pdev' not described in 'db8500_prcmu_probe'

Cc: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

Each function parameter should be documented in kerneldoc format.

Squashes the following W=1 warnings:

 drivers/mfd/mfd-core.c:326: warning: Function parameter or member 'dev' not described in 'devm_mfd_add_devices'
 drivers/mfd/mfd-core.c:326: warning: Function parameter or member 'id' not described in 'devm_mfd_add_devices'
 drivers/mfd/mfd-core.c:326: warning: Function parameter or member 'cells' not described in 'devm_mfd_add_devices'
 drivers/mfd/mfd-core.c:326: warning: Function parameter or member 'n_devs' not described in 'devm_mfd_add_devices'
 drivers/mfd/mfd-core.c:326: warning: Function parameter or member 'mem_base' not described in 'devm_mfd_add_devices'
 drivers/mfd/mfd-core.c:326: warning: Function parameter or member 'irq_base' not described in 'devm_mfd_add_devices'
 drivers/mfd/mfd-core.c:326: warning: Function parameter or member 'domain' not described in 'devm_mfd_add_devices'
Signed-off-by: Lee Jones <lee.jones@linaro.org>

Kerneldoc syntax is used, but not complete.  Descriptions required.

Prevents warnings like:

 drivers/mfd/wm8350-core.c:136: warning: Function parameter or member 'wm8350' not described in 'wm8350_reg_lock'
 drivers/mfd/wm8350-core.c:165: warning: Function parameter or member 'wm8350' not described in 'wm8350_reg_unlock'

Cc: patches@opensource.cirrus.com
Signed-off-by: Lee Jones <lee.jones@linaro.org>

Kerneldoc syntax is used, but not complete.  Descriptions required.

Prevents warnings like:

 drivers/mfd/wm831x-core.c:119: warning: Function parameter or member 'wm831x' not described in 'wm831x_reg_lock'
 drivers/mfd/wm831x-core.c:145: warning: Function parameter or member 'wm831x' not described in 'wm831x_reg_unlock'

Cc: Mark Brown <broonie@opensource.wolfsonmicro.com>
Cc: patches@opensource.cirrus.com
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Acked-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

Kerneldoc syntax is used, but not complete.  Descriptions required.

Prevents warnings like:

 drivers/mfd/wm8400-core.c:113: warning: Function parameter or member 'wm8400' not described in 'wm8400_reset_codec_reg_cache'

Cc: Mark Brown <broonie@opensource.wolfsonmicro.com>
Cc: patches@opensource.cirrus.com
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Acked-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

Kerneldoc is for documenting function arguments and return values.

Prevents warnings like:

 drivers/mfd/tc3589x.c:32: warning: Enum value 'TC3589X_TC35890' not described in enum 'tc3589x_version'
 drivers/mfd/tc3589x.c:32: warning: Enum value 'TC3589X_TC35892' not described in enum 'tc3589x_version'
 drivers/mfd/tc3589x.c:32: warning: Enum value 'TC3589X_TC35893' not described in enum 'tc3589x_version'
 drivers/mfd/tc3589x.c:32: warning: Enum value 'TC3589X_TC35894' not described in enum 'tc3589x_version'
 drivers/mfd/tc3589x.c:32: warning: Enum value 'TC3589X_TC35895' not described in enum 'tc3589x_version'
 drivers/mfd/tc3589x.c:32: warning: Enum value 'TC3589X_TC35896' not described in enum 'tc3589x_version'
 drivers/mfd/tc3589x.c:32: warning: Enum value 'TC3589X_UNKNOWN' not described in enum 'tc3589x_version'
Signed-off-by: Lee Jones <lee.jones@linaro.org>

Smatch reports:

 drivers/mfd/ab8500-debugfs.c:1804:20: error: incompatible types in comparison expression (different type sizes):
 drivers/mfd/ab8500-debugfs.c:1804:20:    unsigned int *
 drivers/mfd/ab8500-debugfs.c:1804:20:    unsigned long *

This is due to mixed types being compared in a min() comparison.  Fix
this by treating values as signed and casting them to the same type
as the receiving variable.

Cc: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

Smatch reports:

 drivers/mfd/ab3100-core.c:501:20: error: incompatible types in comparison expression (different type sizes):
 drivers/mfd/ab3100-core.c:501:20:    unsigned int *
 drivers/mfd/ab3100-core.c:501:20:    unsigned long *
 drivers/mfd/ab8500-debugfs.c:1804:20: error: incompatible types in comparison expression (different type sizes):
 drivers/mfd/ab8500-debugfs.c:1804:20:    unsigned int *
 drivers/mfd/ab8500-debugfs.c:1804:20:    unsigned long *

Since the second min() argument can be less than 0 a signed
variable is required for assignment.  However, the non-sized
type size_t is passed in from the userspace handlers.  In order
to firstly compare, then assign the smallest value, we firstly
need to cast them both to the same as the receiving size_t typed
variable.

Cc: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

Sparse reports:

 drivers/mfd/sprd-sc27xx-spi.c:59:23: warning: symbol 'sprd_pmic_detect_charger_type' was not declared. Should it be static?

... due to a missing header file.

Cc: Orson Zhai <orsonzhai@gmail.com>
Cc: Chunyan Zhang <zhang.lyra@gmail.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Reviewed-by: Baolin Wang <baolin.wang7@gmail.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

Sparse reports:

 drivers/mfd/altera-sysmgr.c:150:30: warning: incorrect type in assignment (different address spaces)
 drivers/mfd/altera-sysmgr.c:150:30:    expected unsigned int [usertype] *base
 drivers/mfd/altera-sysmgr.c:150:30:    got void [noderef] <asn:2> *
 drivers/mfd/altera-sysmgr.c:156:26: warning: incorrect type in argument 3 (different address spaces)
 drivers/mfd/altera-sysmgr.c:156:26:    expected void [noderef] <asn:2> *regs
 drivers/mfd/altera-sysmgr.c:156:26:    got unsigned int [usertype] *base

It appears as though the driver data property 'resource_size_t *base'
was being used to store 2 different types of addresses (physical and
IO-mapped) under a single declared type.

Fortunately, no value is recalled from the driver data entry, so it
can be easily omitted.  Instead we can use the value obtained directly
from the platform resource to pass through  Regmap into the call-backs
to be used for the SMCC call and use a local dedicated __iomem
variable for IO-remapping.

Cc: Thor Thayer <thor.thayer@linux.intel.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

Silences Sparse warning(s):

 drivers/mfd/tps6586x.c:323:16: warning: cast to restricted __le32
 drivers/mfd/tps6586x.c:323:16: warning: cast to restricted __le32
 drivers/mfd/tps6586x.c:323:16: warning: cast to restricted __le32
 drivers/mfd/tps6586x.c:323:16: warning: cast to restricted __le32
 drivers/mfd/tps6586x.c:323:16: warning: cast to restricted __le32
 drivers/mfd/tps6586x.c:323:16: warning: cast to restricted __le32

Cc: Mike Rapoport <mike@compulab.co.il>
Cc: Eric Miao <eric.miao@marvell.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

Silences Sparse warning(s):

 drivers/mfd/twl4030-irq.c:573:40: warning: cast to restricted __le32
 drivers/mfd/twl4030-irq.c:573:40: warning: cast to restricted __le32
 drivers/mfd/twl4030-irq.c:573:40: warning: cast to restricted __le32
 drivers/mfd/twl4030-irq.c:573:40: warning: cast to restricted __le32
 drivers/mfd/twl4030-irq.c:573:40: warning: cast to restricted __le32
 drivers/mfd/twl4030-irq.c:573:40: warning: cast to restricted __le32

Cc: Tony Lindgren <tony@atomide.com>
Cc: Kai Svahn <kai.svahn@nokia.com>
Cc: Syed Khasim <x0khasim@ti.com>
Cc: linux-omap@vger.kernel.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>

Silences Sparse warning:

 drivers/mfd/twl4030-irq.c:485:26: warning: incorrect type in assignment (different base types)
 drivers/mfd/twl4030-irq.c:485:26:    expected unsigned int [usertype] word
 drivers/mfd/twl4030-irq.c:485:26:    got restricted __le32 [usertype]

Cc: Tony Lindgren <tony@atomide.com>
Cc: Kai Svahn <kai.svahn@nokia.com>
Cc: Syed Khasim <x0khasim@ti.com>
Cc: linux-omap@vger.kernel.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>

Expand the control-bank accessors that were implemented using macros.
This allows the definitions of these exported functions to be found more
easily and specifically avoids a W=1 compiler warning due to the
redundant brightness sanity check:

drivers/mfd/lm3533-ctrlbank.c: In function 'lm3533_ctrlbank_set_brightness':
drivers/mfd/lm3533-ctrlbank.c:98:10: warning: comparison is always false due to limited range of data type [-Wtype-limits]
   98 |  if (val > LM3533_##_NAME##_MAX)     \
      |          ^
drivers/mfd/lm3533-ctrlbank.c:125:1: note: in expansion of macro 'lm3533_ctrlbank_set'
  125 | lm3533_ctrlbank_set(brightness, BRIGHTNESS);
      | ^~~~~~~~~~~~~~~~~~~
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

The following build error is seen with 'make dt_binding_check':

  CHKDT   Documentation/devicetree/bindings/mfd/st,stmfx.yaml
/home/fabio/linux-next/Documentation/devicetree/bindings/mfd/st,stmfx.yaml: properties:pinctrl:patternProperties: {'enum': ['$ref', 'additionalItems', 'additionalProperties', 'allOf', 'anyOf', 'const', 'contains', 'default', 'dependencies', 'deprecated', 'description', 'else', 'enum', 'if', 'items', 'maxItems', 'maximum', 'minItems', 'minimum', 'multipleOf', 'not', 'oneOf', 'pattern', 'patternProperties', 'properties', 'propertyNames', 'required', 'then', 'unevaluatedProperties']} is not allowed for 'additionalProperties'

Remove the extra 'additionalProperties' to pass the build.
Signed-off-by: Fabio Estevam <festevam@gmail.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

Add entry for maintaining power management IC drivers for ROHM
BD71837, BD71847, BD71850, BD71828, BD71878, BD70528 and BD99954.
Signed-off-by: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
Acked-by: Sebastian Reichel <sre@kernel.org>
Acked-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Stephen Boyd <sboyd@kernel.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

Intel Tiger Lake PCH-H has the same LPSS than Intel Broxton.
Add the new IDs to the list of supported devices.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

Convert stmfx bindings to json-schema.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@st.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

SC27XX-SPI added subdevices according to a pre-defined mfd_cell array,
no matter these devices were really included on board. In this patch,
switch to use devm_of_platform_populate() for adding sub-devices which
are defined in devicetree.
Signed-off-by: Chunyan Zhang <chunyan.zhang@unisoc.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

Add the Thermal driver along the MFD drivers and header as Maintained
by myself.
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

The new Khadas VIM2 and VIM3 boards controls the cooling fan via the
on-board microcontroller.

This implements the FAN control as thermal devices and as cell of the Khadas
MCU MFD driver.
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Reviewed-by: Amit Kucheria <amit.kucheria@linaro.org>
Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

This Microcontroller is present on the Khadas VIM1, VIM2, VIM3 and Edge
boards.

It has multiple boot control features like password check, power-on
options, power-off control and system FAN control on recent boards.

This implements a very basic MFD driver with the fan control and User
NVMEM cells.
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

This Microcontroller is present on the Khadas VIM1, VIM2, VIM3 and Edge
boards.

It has multiple boot control features like password check, power-on
options, power-off control and system FAN control on recent boards.
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

Add a 16-bit pre-scaled voltage mode to ADC and clarify that existing
pre-scaled mode is 24bit.
Signed-off-by: Tim Harvey <tharvey@gateworks.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

The mfd_cell structures inconsistently use commas on single entries in
the table, make this consistent by always using a comma. Also remove an
extra blank line.
Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

This forward declaration is redundant since the header including the
full data structure is included.
Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

Whilst it doesn't matter if the internal 32k clock register settings
are cleaned up on exit, as the part will be turned off losing any
settings, hence the driver hasn't historially bothered. The external
clock should however be cleaned up, as it could cause clocks to be
left on, and will at best generate a warning on unbind.

Add clean up on both the probe error path and unbind for the 32k
clock.

Fixes: cdd8da8c ("mfd: arizona: Add gating of external MCLKn clocks")
Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

BUG_ON macros are generally frowned upon when the issue isn't super
critical, the kernel can certainly carry on with the 32k clock on the
CODEC in a bad state so change the BUG_ON to a WARN_ON.
Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

Intel Emmitsburg PCH has the same LPSS than Intel Ice Lake.
Add the new IDs to the list of supported devices.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

Implement clock event driver using low power STM32 timers.
Low power timer counters running even when CPUs are stopped.
It could be used as clock event broadcaster to wake up CPUs but not like
a clocksource because each it rise an interrupt the counter restart from 0.

Low power timers have a 16 bits counter and a prescaler which allow to
divide the clock per power of 2 to up 128 to target a 32KHz rate.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Signed-off-by: Pascal Paillet <p.paillet@st.com>
Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

Because stm32-lptimer need to write in registers in interrupt context
enable regmap fast_io to use a spin_lock to protect registers access
rather than a mutex.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@st.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

Add defines to be able to enable/clear irq and configure one shot mode.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@st.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

Add a subnode to STM low power timer bindings to support timer driver
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@st.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

Pull SafeSetID update from Micah Morton:
 "Add additional LSM hooks for SafeSetID

  SafeSetID is capable of making allow/deny decisions for set*uid calls
  on a system, and we want to add similar functionality for set*gid
  calls.

  The work to do that is not yet complete, so probably won't make it in
  for v5.8, but we are looking to get this simple patch in for v5.8
  since we have it ready.

  We are planning on the rest of the work for extending the SafeSetID
  LSM being merged during the v5.9 merge window"

* tag 'LSM-add-setgid-hook-5.8-author-fix' of git://github.com/micah-morton/linux:
  security: Add LSM hooks to set*gid syscalls

The SafeSetID LSM uses the security_task_fix_setuid hook to filter
set*uid() syscalls according to its configured security policy. In
preparation for adding analagous support in the LSM for set*gid()
syscalls, we add the requisite hook here. Tested by putting print
statements in the security_task_fix_setgid hook and seeing them get hit
during kernel boot.
Signed-off-by: Thomas Cedeno <thomascedeno@google.com>
Signed-off-by: Micah Morton <mortonm@chromium.org>

Pull btrfs updates from David Sterba:
 "This reverts the direct io port to iomap infrastructure of btrfs
  merged in the first pull request. We found problems in invalidate page
  that don't seem to be fixable as regressions or without changing iomap
  code that would not affect other filesystems.

  There are four reverts in total, but three of them are followup
  cleanups needed to revert a43a67a2 cleanly. The result is the
  buffer head based implementation of direct io.

  Reverts are not great, but under current circumstances I don't see
  better options"

* tag 'for-5.8-part2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
  Revert "btrfs: switch to iomap_dio_rw() for dio"
  Revert "fs: remove dio_end_io()"
  Revert "btrfs: remove BTRFS_INODE_READDIO_NEED_LOCK"
  Revert "btrfs: split btrfs_direct_IO to read and write part"

Pull networking fixes from David Miller:

 1) Fix cfg80211 deadlock, from Johannes Berg.

 2) RXRPC fails to send norigications, from David Howells.

 3) MPTCP RM_ADDR parsing has an off by one pointer error, fix from
    Geliang Tang.

 4) Fix crash when using MSG_PEEK with sockmap, from Anny Hu.

 5) The ucc_geth driver needs __netdev_watchdog_up exported, from
    Valentin Longchamp.

 6) Fix hashtable memory leak in dccp, from Wang Hai.

 7) Fix how nexthops are marked as FDB nexthops, from David Ahern.

 8) Fix mptcp races between shutdown and recvmsg, from Paolo Abeni.

 9) Fix crashes in tipc_disc_rcv(), from Tuong Lien.

10) Fix link speed reporting in iavf driver, from Brett Creeley.

11) When a channel is used for XSK and then reused again later for XSK,
    we forget to clear out the relevant data structures in mlx5 which
    causes all kinds of problems. Fix from Maxim Mikityanskiy.

12) Fix memory leak in genetlink, from Cong Wang.

13) Disallow sockmap attachments to UDP sockets, it simply won't work.
    From Lorenz Bauer.

* git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (83 commits)
  net: ethernet: ti: ale: fix allmulti for nu type ale
  net: ethernet: ti: am65-cpsw-nuss: fix ale parameters init
  net: atm: Remove the error message according to the atomic context
  bpf: Undo internal BPF_PROBE_MEM in BPF insns dump
  libbpf: Support pre-initializing .bss global variables
  tools/bpftool: Fix skeleton codegen
  bpf: Fix memlock accounting for sock_hash
  bpf: sockmap: Don't attach programs to UDP sockets
  bpf: tcp: Recv() should return 0 when the peer socket is closed
  ibmvnic: Flush existing work items before device removal
  genetlink: clean up family attributes allocations
  net: ipa: header pad field only valid for AP->modem endpoint
  net: ipa: program upper nibbles of sequencer type
  net: ipa: fix modem LAN RX endpoint id
  net: ipa: program metadata mask differently
  ionic: add pcie_print_link_status
  rxrpc: Fix race between incoming ACK parser and retransmitter
  net/mlx5: E-Switch, Fix some error pointer dereferences
  net/mlx5: Don't fail driver on failure to create debugfs
  net/mlx5e: CT: Fix ipv6 nat header rewrite actions
  ...

This reverts commit a43a67a2.

This patch reverts the main part of switching direct io implementation
to iomap infrastructure. There's a problem in invalidate page that
couldn't be solved as regression in this development cycle.

The problem occurs when buffered and direct io are mixed, and the ranges
overlap. Although this is not recommended, filesystems implement
measures or fallbacks to make it somehow work. In this case, fallback to
buffered IO would be an option for btrfs (this already happens when
direct io is done on compressed data), but the change would be needed in
the iomap code, bringing new semantics to other filesystems.

Another problem arises when again the buffered and direct ios are mixed,
invalidation fails, then -EIO is set on the mapping and fsync will fail,
though there's no real error.

There have been discussions how to fix that, but revert seems to be the
least intrusive option.

Link: https://lore.kernel.org/linux-btrfs/20200528192103.xm45qoxqmkw7i5yl@fiona/Signed-off-by: David Sterba <dsterba@suse.com>

On AM65xx MCU CPSW2G NUSS and 66AK2E/L NUSS allmulti setting does not allow
unregistered mcast packets to pass.

This happens, because ALE VLAN entries on these SoCs do not contain port
masks for reg/unreg mcast packets, but instead store indexes of
ALE_VLAN_MASK_MUXx_REG registers which intended for store port masks for
reg/unreg mcast packets.
This path was missed by commit 9d1f6447 ("net: ethernet: ti: ale: fix
seeing unreg mcast packets with promisc and allmulti disabled").

Hence, fix it by taking into account ALE type in cpsw_ale_set_allmulti().

Fixes: 9d1f6447 ("net: ethernet: ti: ale: fix seeing unreg mcast packets with promisc and allmulti disabled")
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>