gpiolib: update inline documentation of gpiod_get_index()

The patch just accents that @dev could be NULL.

There is no functional change.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index 30ae38681fef..12e47dfabd8d 100644
--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c
@@ -2423,7 +2423,7 @@ EXPORT_SYMBOL_GPL(gpiod_get);
 
 /**
  * gpiod_get_index - obtain a GPIO from a multi-index GPIO function
- * @dev:        GPIO consumer
+ * @dev:        GPIO consumer, can be NULL for system-global GPIOs
  * @con_id:     function within the GPIO consumer
  * @idx:        index of the GPIO to obtain in the consumer
  *