diff mbox series

[5.4,280/388] gpio: rcar: Fix runtime PM imbalance on error

Message ID 20200929110024.008806976@linuxfoundation.org
State New
Headers show
Series None | expand

Commit Message

Greg KH Sept. 29, 2020, 11 a.m. UTC 
From: Dinghao Liu <dinghao.liu@zju.edu.cn>

[ Upstream commit 6f8cd246411575703d9312888b70705c396b53a9 ]

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.liu@zju.edu.cn>
Link: https://lore.kernel.org/r/20200522080839.32612-1-dinghao.liu@zju.edu.cn
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/gpio/gpio-rcar.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/drivers/gpio/gpio-rcar.c b/drivers/gpio/gpio-rcar.c
index 187984d26f47a..f0b6c68e848e3 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)