This is a note to let you know that I've just added the patch titled
gpio: rcar: Fix runtime PM imbalance on error
to the 5.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
gpio-rcar-fix-runtime-pm-imbalance-on-error.patch
and it can be found in the queue-5.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 4ef29c4db33bc2cb3e68e59b559746b1db54b698
Author: Dinghao Liu <dinghao.liu@xxxxxxxxxx>
Date: Fri May 22 16:08:38 2020 +0800
gpio: rcar: Fix runtime PM imbalance on error
[ 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@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20200522080839.32612-1-dinghao.liu@xxxxxxxxxx
Signed-off-by: Linus Walleij <linus.walleij@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
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)
