From: Zhang Qilong zhangqilong3@huawei.com
[ 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 --- drivers/watchdog/rti_wdt.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/watchdog/rti_wdt.c b/drivers/watchdog/rti_wdt.c index 836319cbaca9d..359302f71f7ef 100644 --- a/drivers/watchdog/rti_wdt.c +++ b/drivers/watchdog/rti_wdt.c @@ -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);