gpiolib: sanitize the return value of gpio_chip::get_direction()

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As per the API contract, the get_direction() callback can only
return 0, 1 or a negative error number. Add a wrapper around the callback
calls that filters out anything else.

Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250210-gpio-sanitize-retvals-v1-8-12ea88506cb2@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>

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Bartosz Golaszewski 2025-02-10 11:52:02 +01:00

parent 4750ddce95

commit e623c4303e

1 changed files with 21 additions and 6 deletions

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drivers/gpio/gpiolib.c

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