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watchdog: rti-wdt: fix reference leak in rti_wdt_probe

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[ Upstream commit 8711071e9700b67045fe5518161d63f7a03e3c9e ]

pm_runtime_get_sync() will increment pm usage counter even it
failed. Forgetting to call pm_runtime_put_noidle will result
in reference leak in rti_wdt_probe, so we should fix it.

Signed-off-by: Zhang Qilong <zhangqilong3@huawei.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20201030154909.100023-1-zhangqilong3@huawei.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Zhang Qilong 2020-10-30 23:49:09 +08:00 committed by Greg Kroah-Hartman
parent eae1fb3bc5
commit 0aa2eecf85
1 changed files with 3 additions and 1 deletions
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4
drivers/watchdog/rti_wdt.c
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@ -227,8 +227,10 @@ static int rti_wdt_probe(struct platform_device *pdev)
pm_runtime_enable(dev);
ret = pm_runtime_get_sync(dev);
if (ret)
if (ret) {
pm_runtime_put_noidle(dev);
return dev_err_probe(dev, ret, "runtime pm failed\n");
}
platform_set_drvdata(pdev, wdt);