kernel/git/next/linux-next.git/drivers/regulator/fixed.c, branch master

Merge branch 'headers' of git://git.infradead.org/users/willy/pagecache.git

2026-09-14T15:08:32+00:00

# Conflicts: # net/ceph/osd_client.c

regulator: fixed: reject incompatible platform devices

2026-08-30T22:41:14+00:00

The fixed regulator driver expects non-DT platform devices to provide their configuration through platform_data as a struct fixed_voltage_config. An explicitly bound driver can bypass the normal platform device/driver matching and attach the fixed regulator driver to an unrelated platform device. This causes the driver's platform_data to be interpreted as a struct fixed_voltage_config even though it contains data for a different device. Reject non-DT platform devices whose name does not match the fixed regulator driver before accessing their platform data. Fixes: 4b74ff651249 ("regulator: add support for fixed regulators.") Reported-by: syzbot+bfc9e55cf4f98183c636@syzkaller.appspotmail.com Closes: https://syzbot.org/bug?extid=bfc9e55cf4f98183c636 Signed-off-by: Chandradhar Kumar Link: https://patch.msgid.link/20260822065519.112441-1-chandradhar.2003@gmail.com Signed-off-by: Mark Brown

headers: Remove swap.h from suspend.h

2026-08-25T19:12:26+00:00

Nothing in suspend.h needs swap.h. However, many files indirectly depend on some of swap.h's dependencies, so this is a large cross-subsystem patch. Stats: 42 are missing includes of interrupt.h (the question of why swap.h brings in interrupt.h remains unanswered). 10 missing includes of seq_file.h 5 missing includes of swap.h (obviously all files could have just added swap.h, but I preferred to bring in a more minimal inclusion set) 3 missing includes of highmem.h 2 missing includes of device.h 2 missing includes of string_choices.h 1 missing include of cacheflush.h 1 missing include of dma-direction.h 1 missing include of kthread.h 1 missing include of pagemap.h 1 missing include of string_helpers.h 1 missing include of writeback.h I tried to follow whatever conventions appeared to be in use for the various subsystems I touched; for example I added string_choices.h to drm_print.h instead of individually to each driver which used the functions declared there. Signed-off-by: Matthew Wilcox (Oracle)

regulator: fixed: remove unused macro

2026-03-23T16:19:53+00:00

The macro was added in commit ecb6f1f45614 ("regulator: fixed: add support for under-voltage IRQ") but it was never used. Signed-off-by: Hugo Villeneuve Link: https://patch.msgid.link/20260323140206.104908-1-hugo@hugovil.com Signed-off-by: Mark Brown

regulator: fixed: remove unused reboot.h include

2026-03-17T15:49:44+00:00

The include was added in commit ecb6f1f45614 ("regulator: fixed: add support for under-voltage IRQ") but it was never used. Signed-off-by: Hugo Villeneuve Link: https://patch.msgid.link/20260317152215.3473489-1-hugo@hugovil.com Signed-off-by: Mark Brown

regulator: fixed: Rely on the core freeing the enable GPIO

2025-12-05T14:23:48+00:00

In order to simplify ownership rules for enable GPIOs supplied by drivers regulator_register() always takes ownership of them, even if it ends up failing for some other reason. We therefore should not free the GPIO if registration fails but just let the core worry about things. Fixes: 636f4618b1cd (regulator: fixed: fix GPIO descriptor leak on register failure) Reported-by: Diederik de Haas Closes: https://lore.kernel.org/r/DEPEYUF5BRGY.UKFBWRRE8HNP@cknow-tech.com Tested-by: Diederik de Haas Signed-off-by: Mark Brown Link: https://patch.msgid.link/20251204-regulator-fixed-fix-gpiod-leak-v1-1-48efea5b82c2@kernel.org Signed-off-by: Mark Brown

regulator: fixed: fix GPIO descriptor leak on register failure

2025-11-05T11:56:16+00:00

In the commit referenced by the Fixes tag, devm_gpiod_get_optional() was replaced by manual GPIO management, relying on the regulator core to release the GPIO descriptor. However, this approach does not account for the error path: when regulator registration fails, the core never takes over the GPIO, resulting in a resource leak. Add gpiod_put() before returning on regulator registration failure. Fixes: 5e6f3ae5c13b ("regulator: fixed: Let core handle GPIO descriptor") Signed-off-by: Haotian Zhang Link: https://patch.msgid.link/20251028172828.625-1-vulab@iscas.ac.cn Signed-off-by: Mark Brown

regulator: Unify "negative error number" terminology in comments

2024-08-29T13:20:30+00:00

Previous commits cleaning up kerneldoc used the term "negative error number" to refer to error condition return values. Update remaining instances of other terminology such as "error code" or "errno" as well so the whole regulator subsystem is unified. Signed-off-by: Chen-Yu Tsai Reported-by: Andy Shevchenko Reviewed-by: Andy Shevchenko Link: https://patch.msgid.link/20240829085131.1361701-11-wenst@chromium.org Signed-off-by: Mark Brown

regulator: fixed: Fix incorrectly formatted kerneldoc "Return" section

2024-08-29T13:20:27+00:00

kernel-doc complains about missing "Return" section for kerneldoc of of_get_fixed_voltage_config(). The kerneldoc has a description about the return values, just not in the format kernel-doc wants. Convert it to use the proper "Return:" section header. The existing description have been reworded and moved around to fit the grammar and formatting. Signed-off-by: Chen-Yu Tsai Reported-by: Andy Shevchenko Reviewed-by: Andy Shevchenko Link: https://patch.msgid.link/20240829085131.1361701-7-wenst@chromium.org Signed-off-by: Mark Brown

regulator: fixed: add support for under-voltage IRQ

2023-10-25T12:44:30+00:00

Add interrupt support for under-voltage notification. This functionality can be used on systems capable to detect under-voltage state and having enough capacity to let the SoC do some emergency preparation. This change enforce default policy to shutdown system as soon as interrupt is triggered. Signed-off-by: Oleksij Rempel Link: https://lore.kernel.org/r/20231025084614.3092295-6-o.rempel@pengutronix.de Signed-off-by: Mark Brown