gpio: provide gpiod_is_equal()

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There are users in the kernel that directly compare raw GPIO descriptor
pointers in order to determine whether they refer to the same physical
GPIO pin. This accidentally works like this but is not guaranteed by any
API contract. Let's provide a comparator function that hides the actual
logic.

Reviewed-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20250407-gpiod-is-equal-v1-1-7d85f568ae6e@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>

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Bartosz Golaszewski 2025-04-07 09:08:14 +02:00

parent 0af2f6be1b

commit 265daffe78

2 changed files with 23 additions and 0 deletions

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14

drivers/gpio/gpiolib.c

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9

include/linux/gpio/consumer.h

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