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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>
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1 changed files with 5 additions and 1 deletions
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@ -64,6 +64,7 @@ static int arizona_gpio_get(struct gpio_chip *chip, unsigned offset)
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ret = pm_runtime_get_sync(chip->parent);
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if (ret < 0) {
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dev_err(chip->parent, "Failed to resume: %d\n", ret);
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pm_runtime_put_autosuspend(chip->parent);
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return ret;
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}
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@ -72,12 +73,15 @@ static int arizona_gpio_get(struct gpio_chip *chip, unsigned offset)
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if (ret < 0) {
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dev_err(chip->parent, "Failed to drop cache: %d\n",
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ret);
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pm_runtime_put_autosuspend(chip->parent);
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return ret;
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}
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ret = regmap_read(arizona->regmap, reg, &val);
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if (ret < 0)
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if (ret < 0) {
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pm_runtime_put_autosuspend(chip->parent);
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return ret;
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}
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pm_runtime_mark_last_busy(chip->parent);
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pm_runtime_put_autosuspend(chip->parent);
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