[PATCH v2 1/2] phy: starfive: Fix runtime PM cleanup in JH7110 DPHY TX probe

[Can Peng]

stf_dphy_probe() enables runtime PM before getting the clock and
reset controls, creating the PHY and registering the PHY provider. If
any of those steps 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: d3ab79553308 ("phy: starfive: Add mipi dphy tx support")
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Can Peng <pengcan@xxxxxxxxxx>
---
 drivers/phy/starfive/phy-jh7110-dphy-tx.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/phy/starfive/phy-jh7110-dphy-tx.c b/drivers/phy/starfive/phy-jh7110-dphy-tx.c
index c64d1c91b130..181491a93807 100644
--- a/drivers/phy/starfive/phy-jh7110-dphy-tx.c
+++ b/drivers/phy/starfive/phy-jh7110-dphy-tx.c
@@ -392,6 +392,7 @@ 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)
@@ -406,7 +407,9 @@ static int stf_dphy_probe(struct platform_device *pdev)
 	if (IS_ERR(dphy->topsys))
 		return PTR_ERR(dphy->topsys);
 
-	pm_runtime_enable(&pdev->dev);
+	ret = devm_pm_runtime_enable(&pdev->dev);
+	if (ret)
+		return ret;
 
 	dphy->txesc_clk = devm_clk_get(&pdev->dev, "txesc");
 	if (IS_ERR(dphy->txesc_clk))
-- 
2.53.0