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authorBartosz Golaszewski <bgolaszewski@baylibre.com>2020-02-19 10:47:02 +0100
committerLinus Walleij <linus.walleij@linaro.org>2020-02-21 15:51:32 +0100
commit1739a2d852265977836152be43073ead5c64d1ea (patch)
tree2208c05ae64e1459a8b87d5d99ee9867e91572ce /drivers/gpio
parent023892ec80f0efcffe22045e92bb89f3f1480f2d (diff)
downloadlinux-1739a2d852265977836152be43073ead5c64d1ea.tar.bz2
gpiolib: use gpiochip_get_desc() where applicable
Whenever retrieving a descriptor from a gpiochip: use the provided helper which checks for errors. Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com> Link: https://lore.kernel.org/r/20200219094702.6463-1-brgl@bgdev.pl Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/gpio')
-rw-r--r--drivers/gpio/gpiolib.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index f73077f26eff..611709fd560f 100644
--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c
@@ -3143,7 +3143,9 @@ const char *gpiochip_is_requested(struct gpio_chip *chip, unsigned offset)
if (offset >= chip->ngpio)
return NULL;
- desc = &chip->gpiodev->descs[offset];
+ desc = gpiochip_get_desc(chip, offset);
+ if (IS_ERR(desc))
+ return NULL;
if (test_bit(FLAG_REQUESTED, &desc->flags) == 0)
return NULL;