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authorKrzysztof Kozlowski <krzk@kernel.org>2018-12-06 12:45:49 +0300
committerLinus Walleij <linus.walleij@linaro.org>2018-12-14 18:06:24 +0300
commitc5510b8dafce5f3f5a039c9b262ebcae0092c462 (patch)
treed44de432c3fcf5d05500df32cc47072fdf850d19 /include/linux/gpio
parent3a2fa906c0a92d1a0813162a3252f24d383a5374 (diff)
downloadlinux-c5510b8dafce5f3f5a039c9b262ebcae0092c462.tar.xz
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>
Diffstat (limited to 'include/linux/gpio')
-rw-r--r--include/linux/gpio/consumer.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/gpio/consumer.h b/include/linux/gpio/consumer.h
index ed070512b40e..3b01fbcafc94 100644
--- a/include/linux/gpio/consumer.h
+++ b/include/linux/gpio/consumer.h
@@ -505,7 +505,7 @@ static inline int gpiod_set_consumer_name(struct gpio_desc *desc,
static inline struct gpio_desc *gpio_to_desc(unsigned gpio)
{
- return ERR_PTR(-EINVAL);
+ return NULL;
}
static inline int desc_to_gpio(const struct gpio_desc *desc)