linux-toradex.git/drivers/uio, branch v6.14-rc2

Merge tag 'char-misc-6.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

2025-01-28T00:51:51+00:00

Pull Char/Misc/IIO driver updates from Greg KH:
 "Here is the "big" set of char/misc/iio and other smaller driver
  subsystem updates for 6.14-rc1. Loads of different things in here this
  development cycle, highlights are:

   - ntsync "driver" to handle Windows locking types enabling Wine to
     work much better on many workloads (i.e. games). The driver
     framework was in 6.13, but now it's enabled and fully working
     properly. Should make many SteamOS users happy. Even comes with
     tests!

   - Large IIO driver updates and bugfixes

   - FPGA driver updates

   - Coresight driver updates

   - MHI driver updates

   - PPS driver updatesa

   - const bin_attribute reworking for many drivers

   - binder driver updates

   - smaller driver updates and fixes

  All of these have been in linux-next for a while with no reported
  issues"

* tag 'char-misc-6.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (311 commits)
  ntsync: Fix reference leaks in the remaining create ioctls.
  spmi: hisi-spmi-controller: Drop duplicated OF node assignment in spmi_controller_probe()
  spmi: Set fwnode for spmi devices
  ntsync: fix a file reference leak in drivers/misc/ntsync.c
  scripts/tags.sh: Don't tag usages of DECLARE_BITMAP
  dt-bindings: interconnect: qcom,msm8998-bwmon: Add SM8750 CPU BWMONs
  dt-bindings: interconnect: OSM L3: Document sm8650 OSM L3 compatible
  dt-bindings: interconnect: qcom-bwmon: Document QCS615 bwmon compatibles
  interconnect: sm8750: Add missing const to static qcom_icc_desc
  memstick: core: fix kernel-doc notation
  intel_th: core: fix kernel-doc warnings
  binder: log transaction code on failure
  iio: dac: ad3552r-hs: clear reset status flag
  iio: dac: ad3552r-common: fix ad3541/2r ranges
  iio: chemical: bme680: Fix uninitialized variable in __bme680_read_raw()
  misc: fastrpc: Fix copy buffer page size
  misc: fastrpc: Fix registered buffer page address
  misc: fastrpc: Deregister device nodes properly in error scenarios
  nvmem: core: improve range check for nvmem_cell_write()
  nvmem: qcom-spmi-sdam: Set size in struct nvmem_config
  ...

uio: uio_dmem_genirq: check the return value of devm_kasprintf()

2025-01-10T08:52:44+00:00

devm_kasprintf() can fail so check its return value and bail-out on no
memory.

Fixes: 52e2dc2ce2d8 ("uio: Convert a few more users to using %pOFn instead of device_node.name")
Signed-off-by: Bartosz Golaszewski 
Link: https://lore.kernel.org/r/20241202181703.28546-1-brgl@bgdev.pl
Signed-off-by: Greg Kroah-Hartman

uio: Fix return value of poll

2025-01-10T08:52:39+00:00

The return type of __poll_t can't be negative,
-EIO will be translate to __poll_t,and will return to caller.

Fixes: beafc54c4e2f ("UIO: Add the User IO core code")
Signed-off-by: Angus Chen 
Link: https://lore.kernel.org/r/20241126124259.1367-1-angus.chen@jaguarmicro.com
Signed-off-by: Greg Kroah-Hartman

uio_hv_generic: Add a check for HV_NIC for send, receive buffers setup

2025-01-10T00:54:21+00:00

Receive and send buffer allocation was originally introduced to support
DPDK's networking use case. These buffer sizes were further increased to
meet DPDK performance requirements. However, these large buffers are
unnecessary for any other UIO use cases.
Restrict the allocation of receive and send buffers only for HV_NIC device
type, saving 47 MB of memory per device.

While at it, fix some of the syntax related issues in the touched code
which are reported by "--strict" option of checkpatch.

Signed-off-by: Naman Jain 
Reviewed-by: Michael Kelley 
Link: https://lore.kernel.org/r/20250102145243.2088-1-namjain@linux.microsoft.com
Signed-off-by: Wei Liu 
Message-ID: <20250102145243.2088-1-namjain@linux.microsoft.com>

Get rid of 'remove_new' relic from platform driver struct

2024-12-01T23:12:43+00:00

The continual trickle of small conversion patches is grating on me, and
is really not helping.  Just get rid of the 'remove_new' member
function, which is just an alias for the plain 'remove', and had a
comment to that effect:

  /*
   * .remove_new() is a relic from a prototype conversion of .remove().
   * New drivers are supposed to implement .remove(). Once all drivers are
   * converted to not use .remove_new any more, it will be dropped.
   */

This was just a tree-wide 'sed' script that replaced '.remove_new' with
'.remove', with some care taken to turn a subsequent tab into two tabs
to make things line up.

I did do some minimal manual whitespace adjustment for places that used
spaces to line things up.

Then I just removed the old (sic) .remove_new member function, and this
is the end result.  No more unnecessary conversion noise.

Signed-off-by: Linus Torvalds

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
  ...

sysfs: treewide: constify attribute callback of bin_attribute::mmap()

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

The mmap() 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: Andrew Donnellan  # ocxl
Acked-by: Krzysztof Wilczyński 
Link: https://lore.kernel.org/r/20241103-sysfs-const-bin_attr-v2-6-71110628844c@weissschuh.net
Signed-off-by: Greg Kroah-Hartman

uio: uio_pdrv_genirq: Make use of irq_get_trigger_type()

2024-10-13T15:16:28+00:00

Convert the following case:

	struct irq_data *irq_data = irq_get_irq_data(irq);

	if (irq_data && irqd_get_trigger_type(irq_data) ... ) {
		...
	}

to the simpler:

	if (irq_get_trigger_type(irq) ... ) {
		...
	}

by using the irq_get_trigger_type() function.

Suggested-by: Andy Shevchenko 
Signed-off-by: Vasileios Amoiridis 
Reviewed-by: Andy Shevchenko 
Link: https://lore.kernel.org/r/20240912235925.54465-3-vassilisamir@gmail.com
Signed-off-by: Greg Kroah-Hartman

uio: uio_dmem_genirq: Make use of irq_get_trigger_type()

2024-10-13T15:16:28+00:00

Convert the following case:

        struct irq_data *irq_data = irq_get_irq_data(irq);

        if (irq_data && irqd_get_trigger_type(irq_data) ... ) {
                ...
        }

to the simpler:

        if (irq_get_trigger_type(irq) ... ) {
                ...
        }

by using the irq_get_trigger_type() function.

Suggested-by: Andy Shevchenko 
Signed-off-by: Vasileios Amoiridis 
Reviewed-by: Andy Shevchenko 
Link: https://lore.kernel.org/r/20240912235925.54465-2-vassilisamir@gmail.com
Signed-off-by: Greg Kroah-Hartman

uio: Constify struct kobj_type

2024-09-11T14:02:54+00:00

These 'struct kobj_type' are not modified. They are only used in
kobject_init() which takes a 'const struct kobj_type *ktype'
parameter.

Constifying these structure and moving them to a read-only
section (from data to text), and can increase over all security.

```
[Before]
   text   data    bss    dec    hex    filename
  10330   1908     20  12258   2fe2    drivers/uio/uio.o

[After]
  text    data    bss    dec    hex    filename
  10458   1844     20  12322   3022    drivers/uio/uio.o
```

Signed-off-by: Hongbo Li 
Link: https://lore.kernel.org/r/20240904012200.2010916-1-lihongbo22@huawei.com
Signed-off-by: Greg Kroah-Hartman