linux-toradex.git/drivers/nvmem/core.c, branch v6.13-rc7

Merge tag 'char-misc-6.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

2024-11-29T19:58:27+00:00

Pull char/misc/IIO/whatever driver subsystem updates from Greg KH:
 "Here is the 'big and hairy' char/misc/iio and other small driver
  subsystem updates for 6.13-rc1.

  Loads of things in here, and even a fun merge conflict!

   - rust misc driver bindings and other rust changes to make misc
     drivers actually possible.

     I think this is the tipping point, expect to see way more rust
     drivers going forward now that these bindings are present. Next
     merge window hopefully we will have pci and platform drivers
     working, which will fully enable almost all driver subsystems to
     start accepting (or at least getting) rust drivers.

     This is the end result of a lot of work from a lot of people,
     congrats to all of them for getting this far, you've proved many of
     us wrong in the best way possible, working code :)

   - IIO driver updates, too many to list individually, that subsystem
     keeps growing and growing...

   - Interconnect driver updates

   - nvmem driver updates

   - pwm driver updates

   - platform_driver::remove() fixups, loads of them

   - counter driver updates

   - misc driver updates (keba?)

   - binder driver updates and fixes

   - loads of other small char/misc/etc driver updates and additions,
     full details in the shortlog.

  All of these have been in linux-next for a while, with no other
  reported issues other than that merge conflict"

* tag 'char-misc-6.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (401 commits)
  mei: vsc: Fix typo "maintstepping" -> "mainstepping"
  firmware: Switch back to struct platform_driver::remove()
  misc: isl29020: Fix the wrong format specifier
  scripts/tags.sh: Don't tag usages of DEFINE_MUTEX
  fpga: Switch back to struct platform_driver::remove()
  mei: vsc: Improve error logging in vsc_identify_silicon()
  mei: vsc: Do not re-enable interrupt from vsc_tp_reset()
  dt-bindings: spmi: qcom,x1e80100-spmi-pmic-arb: Add SAR2130P compatible
  dt-bindings: spmi: spmi-mtk-pmif: Add compatible for MT8188
  spmi: pmic-arb: fix return path in for_each_available_child_of_node()
  iio: Move __private marking before struct element priv in struct iio_dev
  docs: iio: ad7380: add adaq4370-4 and adaq4380-4
  iio: adc: ad7380: add support for adaq4370-4 and adaq4380-4
  iio: adc: ad7380: use local dev variable to shorten long lines
  iio: adc: ad7380: fix oversampling formula
  dt-bindings: iio: adc: ad7380: add adaq4370-4 and adaq4380-4 compatible parts
  bus: mhi: host: pci_generic: Use pcim_iomap_region() to request and map MHI BAR
  bus: mhi: host: Switch trace_mhi_gen_tre fields to native endian
  misc: atmel-ssc: Use of_property_present() for non-boolean properties
  misc: keba: Add hardware dependency
  ...

nvmem: core: Check read_only flag for force_ro in bin_attr_nvmem_write()

2024-11-05T13:01:19+00:00

The bin_attr_nvmem_write() must check the read_only flag and block
writes on read-only devices, now that a nvmem device can be switched
between read-write and read-only mode at runtime using the force_ro
attribute. Add the missing check.

Fixes: 9d7eb234ac7a ("nvmem: core: Implement force_ro sysfs attribute")
Cc: Stable@vger.kernel.org
Signed-off-by: Marek Vasut 
Signed-off-by: Srinivas Kandagatla 
Link: https://lore.kernel.org/r/20241030140253.40445-2-srinivas.kandagatla@linaro.org
Signed-off-by: Greg Kroah-Hartman

sysfs: treewide: constify attribute callback of bin_is_visible()

2024-11-05T13:00:28+00:00

The is_bin_visible() callbacks should not modify the struct
bin_attribute passed as argument.
Enforce this by marking the argument as const.

As there are not many callback implementers perform this change
throughout the tree at once.

Signed-off-by: Thomas Weißschuh 
Acked-by: Martin K. Petersen 
Acked-by: Jason Gunthorpe 
Acked-by: Ira Weiny 
Acked-by: Krzysztof Wilczyński 
Link: https://lore.kernel.org/r/20241103-sysfs-const-bin_attr-v2-5-71110628844c@weissschuh.net
Signed-off-by: Greg Kroah-Hartman

nvmem: core: calculate bin_attribute size through bin_size()

2024-11-05T13:00:28+00:00

Stop abusing the is_bin_visible() callback to calculate the attribute
size. Instead use the new, dedicated bin_size() one.

Signed-off-by: Thomas Weißschuh 
Acked-by: Krzysztof Wilczyński 
Link: https://lore.kernel.org/r/20241103-sysfs-const-bin_attr-v2-4-71110628844c@weissschuh.net
Signed-off-by: Greg Kroah-Hartman

nvmem: Correct some typos in comments

2024-11-05T04:33:47+00:00

Fixed some confusing typos that were currently identified with codespell,
the details are as follows:

-in the code comments:
drivers/nvmem/brcm_nvram.c:25: underlaying ==> underlying
drivers/nvmem/core.c:1250: alredy ==> already
drivers/nvmem/core.c:1268: alredy ==> already
drivers/nvmem/lpc18xx_otp.c:24: reseverd ==> reserved
drivers/nvmem/microchip-otpc.c:159: devide ==> divide

Signed-off-by: Shen Lichuan 
Acked-by: Vladimir Zapolskiy 
Signed-off-by: Srinivas Kandagatla 
Link: https://lore.kernel.org/r/20241030140315.40562-4-srinivas.kandagatla@linaro.org
Signed-off-by: Greg Kroah-Hartman

nvmem: Fix return type of devm_nvmem_device_get() in kerneldoc

2024-09-03T10:20:41+00:00

devm_nvmem_device_get() returns an nvmem device, not an nvmem cell.

Fixes: e2a5402ec7c6d044 ("nvmem: Add nvmem_device based consumer apis.")
Cc: stable 
Signed-off-by: Geert Uytterhoeven 
Signed-off-by: Srinivas Kandagatla 
Link: https://lore.kernel.org/r/20240902142510.71096-3-srinivas.kandagatla@linaro.org
Signed-off-by: Greg Kroah-Hartman

Merge tag 'char-misc-6.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

2024-07-19T22:55:08+00:00

Pull char / misc and other driver updates from Greg KH:
 "Here is the "big" set of char/misc and other driver subsystem changes
  for 6.11-rc1. Nothing major in here, just loads of new drivers and
  updates. Included in here are:

   - IIO api updates and new drivers added

   - wait_interruptable_timeout() api cleanups for some drivers

   - MODULE_DESCRIPTION() additions for loads of drivers

   - parport out-of-bounds fix

   - interconnect driver updates and additions

   - mhi driver updates and additions

   - w1 driver fixes

   - binder speedups and fixes

   - eeprom driver updates

   - coresight driver updates

   - counter driver update

   - new misc driver additions

   - other minor api updates

  All of these, EXCEPT for the final Kconfig build fix for 32bit
  systems, have been in linux-next for a while with no reported issues.
  The Kconfig fixup went in 29 hours ago, so might have missed the
  latest linux-next, but was acked by everyone involved"

* tag 'char-misc-6.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (330 commits)
  misc: Kconfig: exclude mrvl-cn10k-dpi compilation for 32-bit systems
  misc: delete Makefile.rej
  binder: fix hang of unregistered readers
  misc: Kconfig: add a new dependency for MARVELL_CN10K_DPI
  virtio: add missing MODULE_DESCRIPTION() macro
  agp: uninorth: add missing MODULE_DESCRIPTION() macro
  spmi: add missing MODULE_DESCRIPTION() macros
  dev/parport: fix the array out-of-bounds risk
  samples: configfs: add missing MODULE_DESCRIPTION() macro
  misc: mrvl-cn10k-dpi: add Octeon CN10K DPI administrative driver
  misc: keba: Fix missing AUXILIARY_BUS dependency
  slimbus: Fix struct and documentation alignment in stream.c
  MAINTAINERS: CC dri-devel list on Qualcomm FastRPC patches
  misc: fastrpc: use coherent pool for untranslated Compute Banks
  misc: fastrpc: support complete DMA pool access to the DSP
  misc: fastrpc: add missing MODULE_DESCRIPTION() macro
  misc: fastrpc: Add missing dev_err newlines
  misc: fastrpc: Use memdup_user()
  nvmem: core: Implement force_ro sysfs attribute
  nvmem: Use sysfs_emit() for type attribute
  ...

nvmem: core: Implement force_ro sysfs attribute

2024-07-05T07:55:05+00:00

Implement "force_ro" sysfs attribute to allow users to set read-write
devices as read-only and back to read-write from userspace. The choice
of the name is based on MMC core 'force_ro' attribute.

This solves a situation where an AT24 I2C EEPROM with GPIO based nWP
signal may have to be occasionally updated. Such I2C EEPROM device is
usually set as read-only during most of the regular system operation,
but in case it has to be updated in a controlled manner, it could be
unlocked using this new "force_ro" sysfs attribute and then re-locked
again.

The "read-only" DT property and config->read_only configuration is
respected and is used to set default state of the device, read-only
or read-write, for devices which do implement .reg_write function.
For devices which do not implement .reg_write function, the device
is unconditionally read-only and the "force_ro" attribute is not
visible.

Signed-off-by: Marek Vasut 
Signed-off-by: Srinivas Kandagatla 
Link: https://lore.kernel.org/r/20240705074852.423202-16-srinivas.kandagatla@linaro.org
Signed-off-by: Greg Kroah-Hartman

nvmem: Use sysfs_emit() for type attribute

2024-07-05T07:55:05+00:00

Use sysfs_emit() instead of sprintf() to follow best practice per
Documentation/filesystems/sysfs.rst
"
show() should only use sysfs_emit()...
"

Signed-off-by: Marek Vasut 
Signed-off-by: Srinivas Kandagatla 
Link: https://lore.kernel.org/r/20240705074852.423202-15-srinivas.kandagatla@linaro.org
Signed-off-by: Greg Kroah-Hartman

nvmem: core: drop unnecessary range checks in sysfs callbacks

2024-07-05T07:55:05+00:00

The same checks have already been done in sysfs_kf_bin_write() and
sysfs_kf_bin_read() just before the callbacks are invoked.

Signed-off-by: Thomas Weißschuh 
Signed-off-by: Srinivas Kandagatla 
Link: https://lore.kernel.org/r/20240705074852.423202-12-srinivas.kandagatla@linaro.org
Signed-off-by: Greg Kroah-Hartman