Messages in this thread Patch in this message | | | From | Bartosz Golaszewski <> | Subject | [PATCH 1/3] gpiolib: provide VALIDATE_DESC_PTR() macro | Date | Mon, 24 Feb 2020 10:41:56 +0100 |
| |
From: Bartosz Golaszewski <bgolaszewski@baylibre.com>
We're about to add a public GPIO function that takes a descriptor as argument and returns a pointer. Add a corresponding macro wrapping the validate_desc() function that returns an ERR_PTR() on error.
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com> --- drivers/gpio/gpiolib.c | 8 ++++++++ 1 file changed, 8 insertions(+)
diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c index 4d0106ceeba7..da8ffd40aa97 100644 --- a/drivers/gpio/gpiolib.c +++ b/drivers/gpio/gpiolib.c @@ -2864,6 +2864,14 @@ static int validate_desc(const struct gpio_desc *desc, const char *func) return; \ } while (0) +#define VALIDATE_DESC_PTR(desc) do { \ + int __valid = validate_desc(desc, __func__); \ + if (__valid < 0) \ + return ERR_PTR(__valid); \ + if (__valid == 0) \ + return NULL; \ + } while (0) + int gpiod_request(struct gpio_desc *desc, const char *label) { int ret = -EPROBE_DEFER; -- 2.25.0
| |