linux-stable.git/drivers/devfreq, branch linux-6.15.y

PM / devfreq: governor: Replace sscanf() with kstrtoul() in set_freq_store()

2025-08-20T16:35:55+00:00

[ Upstream commit 914cc799b28f17d369d5b4db3b941957d18157e8 ]

Replace sscanf() with kstrtoul() in set_freq_store() and check the result
to avoid invalid input.

Signed-off-by: Lifeng Zheng 
Link: https://lore.kernel.org/lkml/20250421030020.3108405-2-zhenglifeng1@huawei.com/
Signed-off-by: Chanwoo Choi 
Signed-off-by: Sasha Levin

PM / devfreq: Fix a index typo in trans_stat

2025-08-15T10:16:21+00:00

[ Upstream commit 78c5845fbbf6aaeb9959c5fbaee5cc53ef5f38c2 ]

Fixes: 4920ee6dcfaf ("PM / devfreq: Convert to use sysfs_emit_at() API")
Signed-off-by: pls 
Link: https://patchwork.kernel.org/project/linux-pm/patch/20250515143100.17849-1-chanwoo@kernel.org/
Signed-off-by: Chanwoo Choi 
Signed-off-by: Sasha Levin

PM / devfreq: Check governor before using governor->name

2025-08-15T10:16:21+00:00

[ Upstream commit bab7834c03820eb11269bc48f07c3800192460d2 ]

Commit 96ffcdf239de ("PM / devfreq: Remove redundant governor_name from
struct devfreq") removes governor_name and uses governor->name to replace
it. But devfreq->governor may be NULL and directly using
devfreq->governor->name may cause null pointer exception. Move the check of
governor to before using governor->name.

Fixes: 96ffcdf239de ("PM / devfreq: Remove redundant governor_name from struct devfreq")
Signed-off-by: Lifeng Zheng 
Link: https://lore.kernel.org/lkml/20250421030020.3108405-5-zhenglifeng1@huawei.com/
Signed-off-by: Chanwoo Choi 
Signed-off-by: Sasha Levin

PM / devfreq: rockchip-dfi: Switch to use hrtimer_setup()

2025-02-18T09:32:34+00:00

hrtimer_setup() takes the callback function pointer as argument and
initializes the timer completely.

Replace hrtimer_init() and the open coded initialization of
hrtimer::function with the new setup mechanism.

Patch was created by using Coccinelle.

Signed-off-by: Nam Cao 
Signed-off-by: Thomas Gleixner 
Acked-by: Chanwoo Choi 
Link: https://lore.kernel.org/all/dfb35fb45eacdba7b8767052aa8c29ca157ac1b0.1738746821.git.namcao@linutronix.de

Merge tag 'devfreq-next-for-6.14' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/chanwoo/linux

2025-01-13T19:48:34+00:00

Merge devfreq updates for 6.14 from Chanwoo Choi:

"- Call of_node_put() only once in devfreq_event_get_edev_by_phandle()
   on devfreq-event.c
 - Remove unused function parameter of exynos_bus_parse_of() on
   exynos-bus.c"

* tag 'devfreq-next-for-6.14' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/chanwoo/linux:
  PM / devfreq: exynos: remove unused function parameter
  PM / devfreq: event: Call of_node_put() only once in devfreq_event_get_edev_by_phandle()

PM / devfreq: exynos: remove unused function parameter

2025-01-11T12:03:07+00:00

exynos_bus_parse_of() still declares a parameter struct device_node that
is not used yet. This parameter is unnecessary and should be removed.

Signed-off-by: Jeongjun Park

PM / devfreq: event: Call of_node_put() only once in devfreq_event_get_edev_by_phandle()

2024-12-08T12:58:55+00:00

An of_node_put(node) call was immediately used after a null pointer check
for the local variable “edev” at the end of this function implementation.
Thus call such a function only once instead directly before the check.

This issue was transformed by using the Coccinelle software.

Link: https://lore.kernel.org/lkml/0f103384-376c-41f0-a35c-8ad98327d6cb@web.de/
Signed-off-by: Markus Elfring 
Signed-off-by: Chanwoo Choi

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

PM / devfreq: imx-bus: Use of_property_present()

2024-09-04T16:23:56+00:00

Use of_property_present() to test for property presence rather than
of_get_property(). This is part of a larger effort to remove callers
of of_get_property() and similar functions. of_get_property() leaks
the DT property data pointer which is a problem for dynamically
allocated nodes which may be freed.

Link: https://lore.kernel.org/lkml/20240731191312.1710417-11-robh@kernel.org/
Acked-by: Peng Fan 
Signed-off-by: Rob Herring (Arm) 
Signed-off-by: Chanwoo Choi

PM / devfreq: exynos: Use Use devm_clk_get_enabled() helpers

2024-09-04T15:33:00+00:00

The devm_clk_get_enabled() helpers:
    - call devm_clk_get()
    - call clk_prepare_enable() and register what is needed in order to
     call clk_disable_unprepare() when needed, as a managed resource.

This simplifies the code and avoids the calls to clk_disable_unprepare().

While at it, use dev_err_probe consistently, and use its return value
to return the error code.

Link: https://lore.kernel.org/lkml/20240510094034.12493-1-linux.amoon@gmail.com/
Signed-off-by: Anand Moon 
Signed-off-by: Chanwoo Choi