gpiolib: Don't WARN on gpiod_put() for optional GPIO

In case of debug and optional GPIO requested, the gpiod_put() is not aware of
and will WARN, which is not the case.

Make gpiod_put() NULL-aware to keep silent for optional GPIOs.

Signed-off-by: Andy Shevchenko <[email protected]>
Signed-off-by: Bartosz Golaszewski <[email protected]>

diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index 144af07335815998c7238b72e01882cf26692ef8..36445e24ee892982175ae5d25d111828f1f9812d 100644 (file)
--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c
@@ -4616,7 +4616,8 @@ EXPORT_SYMBOL_GPL(gpiod_get_array_optional);
  */
 void gpiod_put(struct gpio_desc *desc)
 {
-       gpiod_free(desc);
+       if (desc)
+               gpiod_free(desc);
 }
 EXPORT_SYMBOL_GPL(gpiod_put);