[PATCH] gpio: rcar: Fix runtime PM imbalance on error

[Dinghao Liu]

pm_runtime_get_sync() increments the runtime PM usage counter even
when it returns an error code. Thus a pairing decrement is needed on
the error handling path to keep the counter balanced.

Signed-off-by: Dinghao Liu <dinghao....@zju.edu.cn>
---
 drivers/gpio/gpio-rcar.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/gpio/gpio-rcar.c b/drivers/gpio/gpio-rcar.c
index 7284473c9fe3..eac1582c70da 100644
--- a/drivers/gpio/gpio-rcar.c
+++ b/drivers/gpio/gpio-rcar.c
@@ -250,8 +250,10 @@ static int gpio_rcar_request(struct gpio_chip *chip, 
unsigned offset)
        int error;
 
        error = pm_runtime_get_sync(p->dev);
-       if (error < 0)
+       if (error < 0) {
+               pm_runtime_put(p->dev);
                return error;
+       }
 
        error = pinctrl_gpio_request(chip->base + offset);
        if (error)
-- 
2.17.1