gpiolib: add desc validation to gpiod_set_transitory()

The gpiod_set_transitory() function is publicly exported, and
it is expected from it to be ready for usage with optional GPIOs
on consumer's side.

Signed-off-by: Vladimir Zapolskiy <vz@mleia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index c23cc6b..7dde703 100644 (file)
--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c
@@ -2526,6 +2526,7 @@ int gpiod_set_transitory(struct gpio_desc *desc, bool transitory)
        int gpio;
        int rc;
 
+       VALIDATE_DESC(desc);
        /*
         * Handle FLAG_TRANSITORY first, enabling queries to gpiolib for
         * persistence state.