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| author | Ji Sheng Teoh <jisheng.teoh@starfivetech.com> | 2024-01-19 16:27:21 +0800 |
|---|---|---|
| committer | Wim Van Sebroeck <wim@linux-watchdog.org> | 2024-03-03 14:17:28 +0100 |
| commit | 8bc22a2f1bf0f402029087fcb53130233a544fed (patch) | |
| tree | 4b784644b26581cfa2e4113ef85502478faaeaa0 /drivers/watchdog | |
| parent | 975e4b273ed2c801a0354a7cdd7d89e1fe1aa842 (diff) | |
| download | linux-stable-8bc22a2f1bf0f402029087fcb53130233a544fed.tar.gz linux-stable-8bc22a2f1bf0f402029087fcb53130233a544fed.tar.bz2 linux-stable-8bc22a2f1bf0f402029087fcb53130233a544fed.zip | |
watchdog: starfive: Check pm_runtime_enabled() before decrementing usage counter
In the probe function, pm_runtime_put_sync() will fail on platform with
runtime PM disabled.
Check if runtime PM is enabled before calling pm_runtime_put_sync() to
fix it.
Fixes: db728ea9c7be ("drivers: watchdog: Add StarFive Watchdog driver")
Signed-off-by: Xingyu Wu <xingyu.wu@starfivetech.com>
Signed-off-by: Ley Foon Tan <leyfoon.tan@starfivetech.com>
Signed-off-by: Ji Sheng Teoh <jisheng.teoh@starfivetech.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20240119082722.1133024-1-jisheng.teoh@starfivetech.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
Diffstat (limited to 'drivers/watchdog')
| -rw-r--r-- | drivers/watchdog/starfive-wdt.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/watchdog/starfive-wdt.c b/drivers/watchdog/starfive-wdt.c index e28ead24c520..df68ae4acbd7 100644 --- a/drivers/watchdog/starfive-wdt.c +++ b/drivers/watchdog/starfive-wdt.c @@ -494,8 +494,13 @@ static int starfive_wdt_probe(struct platform_device *pdev) if (ret) goto err_exit; - if (!early_enable) - pm_runtime_put_sync(&pdev->dev); + if (!early_enable) { + if (pm_runtime_enabled(&pdev->dev)) { + ret = pm_runtime_put_sync(&pdev->dev); + if (ret) + goto err_exit; + } + } return 0; |