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| author | Navid Emamdoost <navid.emamdoost@gmail.com> | 2020-06-04 22:00:52 -0500 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2020-06-16 10:38:07 +0200 |
| commit | 861254d826499944cb4d9b5a15f5a794a6b99a69 (patch) | |
| tree | 530f7efcb21503f93d4717e5c1ba34f9df7cab9e /drivers/gpio/gpio-arizona.c | |
| parent | e6f390a834b56583e6fc0949822644ce92fbb107 (diff) | |
| download | lwn-861254d826499944cb4d9b5a15f5a794a6b99a69.tar.gz lwn-861254d826499944cb4d9b5a15f5a794a6b99a69.zip | |
gpio: arizona: put pm_runtime in case of failure
Calling pm_runtime_get_sync increments the counter even in case of
failure, causing incorrect ref count if pm_runtime_put is not called in
error handling paths. 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/20200605030052.78235-1-navid.emamdoost@gmail.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/gpio/gpio-arizona.c')
| -rw-r--r-- | drivers/gpio/gpio-arizona.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/gpio/gpio-arizona.c b/drivers/gpio/gpio-arizona.c index 7520a13b4c7c..5bda38e0780f 100644 --- a/drivers/gpio/gpio-arizona.c +++ b/drivers/gpio/gpio-arizona.c @@ -64,6 +64,7 @@ static int arizona_gpio_get(struct gpio_chip *chip, unsigned offset) ret = pm_runtime_get_sync(chip->parent); if (ret < 0) { dev_err(chip->parent, "Failed to resume: %d\n", ret); + pm_runtime_put_autosuspend(chip->parent); return ret; } @@ -72,12 +73,15 @@ static int arizona_gpio_get(struct gpio_chip *chip, unsigned offset) if (ret < 0) { dev_err(chip->parent, "Failed to drop cache: %d\n", ret); + pm_runtime_put_autosuspend(chip->parent); return ret; } ret = regmap_read(arizona->regmap, reg, &val); - if (ret < 0) + if (ret < 0) { + pm_runtime_put_autosuspend(chip->parent); return ret; + } pm_runtime_mark_last_busy(chip->parent); pm_runtime_put_autosuspend(chip->parent); |