tree d44de432c3fcf5d05500df32cc47072fdf850d19
parent 3a2fa906c0a92d1a0813162a3252f24d383a5374
author Krzysztof Kozlowski <krzk@kernel.org> 1544089549 +0100
committer Linus Walleij <linus.walleij@linaro.org> 1544799984 +0100

gpiolib: Fix return value of gpio_to_desc() stub if !GPIOLIB

If CONFIG_GPOILIB is not set, the stub of gpio_to_desc() should return
the same type of error as regular version: NULL.  All the callers
compare the return value of gpio_to_desc() against NULL, so returned
ERR_PTR would be treated as non-error case leading to dereferencing of
error value.

Fixes: 79a9becda894 ("gpiolib: export descriptor-based GPIO interface")
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>