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gpiolib: use gpiochip_get_desc() where applicable
author
Bartosz Golaszewski
<bgolaszewski@baylibre.com>
Wed, 19 Feb 2020 09:47:02 +0000
(10:47 +0100)
committer
Linus Walleij
<linus.walleij@linaro.org>
Fri, 21 Feb 2020 14:51:32 +0000
(15:51 +0100)
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>
drivers/gpio/gpiolib.c
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diff --git
a/drivers/gpio/gpiolib.c
b/drivers/gpio/gpiolib.c
index
f73077f
..
611709f
100644
(file)
--- 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;