On 4/25/23 03:04, Xingyu Wu wrote:
When the starfive watchdog driver uses 'pm_runtime_put_sync()' as probe
return value at last and 'early_enable' is disabled, it could return the
error '-ENOSYS' if the CONFIG_PM is disabled, but the driver should works
normally.
Add a check to make sure the PM is enabled and then use
'pm_runtime_put_sync()' as return value when 'early_enable' is disabled.
Fixes: db728ea9c7be ("drivers: watchdog: Add StarFive Watchdog driver")
Signed-off-by: Xingyu Wu <xingyu.wu@xxxxxxxxxxxxxxxx>
---
Hi, Guenter and Wim,
This patch fixes the issue of StarFive watchdog driver and rebases on
the master branch of linux-next.
Thanks.
---
drivers/watchdog/starfive-wdt.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/watchdog/starfive-wdt.c b/drivers/watchdog/starfive-wdt.c
index 1995cceca51e..51e487e09960 100644
--- a/drivers/watchdog/starfive-wdt.c
+++ b/drivers/watchdog/starfive-wdt.c
@@ -492,7 +492,8 @@ static int starfive_wdt_probe(struct platform_device *pdev)
goto err_exit;
if (!early_enable)
- return pm_runtime_put_sync(&pdev->dev);
+ if (pm_runtime_enabled(&pdev->dev))
+ return pm_runtime_put_sync(&pdev->dev);
Why not just
if (!early_enable)
pm_runtime_put_sync(&pdev->dev)
like almost every other caller of pm_runtime_put_sync() ?
Guenter
