gpio: arizona: handle pm_runtime_get_sync failure case

Calling pm_runtime_get_sync increments the counter even in case of
failure, causing incorrect ref count. Call pm_runtime_put if
pm_runtime_get_sync fails.

Signed-off-by: Navid Emamdoost <navid.emamdoost@gmail.com>
Acked-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20200605025207.65719-1-navid.emamdoost@gmail.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

diff --git a/drivers/gpio/gpio-arizona.c b/drivers/gpio/gpio-arizona.c
index 5640efe..7520a13 100644 (file)
--- a/drivers/gpio/gpio-arizona.c
+++ b/drivers/gpio/gpio-arizona.c
@@ -106,6 +106,7 @@ static int arizona_gpio_direction_out(struct gpio_chip *chip,
                ret = pm_runtime_get_sync(chip->parent);
                if (ret < 0) {
                        dev_err(chip->parent, "Failed to resume: %d\n", ret);
+                       pm_runtime_put(chip->parent);
                        return ret;
                }
        }