[PATCH v2 2/2] phy: starfive: Fix runtime PM cleanup in JH7110 DPHY RX probe

[Can Peng]

stf_dphy_probe() enables runtime PM before registering the PHY provider.
If devm_of_phy_provider_register() fails, probe returns with runtime PM
still enabled.

The driver also has no remove callback, so runtime PM is left enabled
on driver unbind after a successful probe.

Use devm_pm_runtime_enable() so runtime PM is disabled automatically
on later probe failures and on driver unbind.

Fixes: f8aa660841bc ("phy: starfive: Add mipi dphy rx support")
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Can Peng <pengcan@xxxxxxxxxx>
---
 drivers/phy/starfive/phy-jh7110-dphy-rx.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/phy/starfive/phy-jh7110-dphy-rx.c b/drivers/phy/starfive/phy-jh7110-dphy-rx.c
index 0b039e1f71c5..d06f21ad6332 100644
--- a/drivers/phy/starfive/phy-jh7110-dphy-rx.c
+++ b/drivers/phy/starfive/phy-jh7110-dphy-rx.c
@@ -150,6 +150,7 @@ static int stf_dphy_probe(struct platform_device *pdev)
 {
 	struct phy_provider *phy_provider;
 	struct stf_dphy *dphy;
+	int ret;
 
 	dphy = devm_kzalloc(&pdev->dev, sizeof(*dphy), GFP_KERNEL);
 	if (!dphy)
@@ -190,7 +191,9 @@ static int stf_dphy_probe(struct platform_device *pdev)
 		return PTR_ERR(dphy->phy);
 	}
 
-	pm_runtime_enable(&pdev->dev);
+	ret = devm_pm_runtime_enable(&pdev->dev);
+	if (ret)
+		return ret;
 
 	phy_set_drvdata(dphy->phy, dphy);
 	phy_provider = devm_of_phy_provider_register(&pdev->dev,
-- 
2.53.0