gpiolib: use a mutex to protect the list of GPIO devices

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The global list of GPIO devices is never modified or accessed from
atomic context so it's fine to protect it using a mutex. Add a new
global lock dedicated to the gpio_devices list and use it whenever
accessing or modifying it.

Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>

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This commit is contained in:

Bartosz Golaszewski 2023-12-15 16:53:00 +01:00

parent f95fd4ac15

commit 65a828bab1

4 changed files with 90 additions and 100 deletions

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45

drivers/gpio/gpiolib-sysfs.c

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6

drivers/gpio/gpiolib-sysfs.h

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139

drivers/gpio/gpiolib.c

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2

drivers/gpio/gpiolib.h

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