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Diffstat (limited to 'drivers/gpio')
-rw-r--r--drivers/gpio/gpiolib.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index 0cbdddab4ff2..86ef3461ec06 100644
--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c
@@ -1763,6 +1763,9 @@ EXPORT_SYMBOL_GPL(gpio_direction_output);
* gpio_set_debounce - sets @debounce time for a @gpio
* @gpio: the gpio to set debounce time
* @debounce: debounce time is microseconds
+ *
+ * returns -ENOTSUPP if the controller does not support setting
+ * debounce.
*/
static int gpiod_set_debounce(struct gpio_desc *desc, unsigned debounce)
{
@@ -1778,9 +1781,9 @@ static int gpiod_set_debounce(struct gpio_desc *desc, unsigned debounce)
chip = desc->chip;
if (!chip->set || !chip->set_debounce) {
- pr_warn("%s: missing set() or set_debounce() operations\n",
+ pr_debug("%s: missing set() or set_debounce() operations\n",
__func__);
- return -EIO;
+ return -ENOTSUPP;
}
spin_lock_irqsave(&gpio_lock, flags);