diff options
| author | Bartosz Golaszewski <bgolaszewski@baylibre.com> | 2019-12-24 15:06:59 +0300 |
|---|---|---|
| committer | Bartosz Golaszewski <bgolaszewski@baylibre.com> | 2020-01-07 14:03:28 +0300 |
| commit | 06863620edfeadbe9e0ea5eb01dd94ce07f37549 (patch) | |
| tree | f480b288a7b532bc0ddc30a49bc094f232f0abc9 /include/linux/gpio | |
| parent | d90f36851d6595136b461773846b76e0c45e3e0c (diff) | |
| download | linux-06863620edfeadbe9e0ea5eb01dd94ce07f37549.tar.xz | |
gpiolib: convert the type of hwnum to unsigned int in gpiochip_get_desc()
gpiochip_get_desc() takes a u16 hwnum, but it turns out most users don't
respect that and usually pass an unsigned int. Since implicit casting to
a smaller type is dangerous - let's change the type of hwnum to unsigned
int in gpiochip_get_desc() and in gpiochip_request_own_desc() where the
size of hwnum is not respected either and who's a user of the former.
This is safe as we then check the hwnum against the number of lines
before proceeding in gpiochip_get_desc().
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'include/linux/gpio')
| -rw-r--r-- | include/linux/gpio/driver.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/include/linux/gpio/driver.h b/include/linux/gpio/driver.h index e2480ef94c55..4f032de10bae 100644 --- a/include/linux/gpio/driver.h +++ b/include/linux/gpio/driver.h @@ -715,7 +715,8 @@ gpiochip_remove_pin_ranges(struct gpio_chip *chip) #endif /* CONFIG_PINCTRL */ -struct gpio_desc *gpiochip_request_own_desc(struct gpio_chip *chip, u16 hwnum, +struct gpio_desc *gpiochip_request_own_desc(struct gpio_chip *chip, + unsigned int hwnum, const char *label, enum gpio_lookup_flags lflags, enum gpiod_flags dflags); |