[PATCH 09/20] phy: stih41x-usb: Fixup stih41x_usb_phy_power_on failure path

[Kishon Vijay Abraham I]

From: Axel Lin <axel.lin@xxxxxxxxxx>

If stih41x_usb_phy_power_on() fails, we need to call clk_disable_unprepare()
before return error. This is to ensure we have balanced clk_enable/disable
calls.

Signed-off-by: Axel Lin <axel.lin@xxxxxxxxxx>
Acked-by: Patrice Chotard <patrice.chotard@xxxxxx>
Signed-off-by: Kishon Vijay Abraham I <kishon@xxxxxx>
---
 drivers/phy/phy-stih41x-usb.c |    8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/phy/phy-stih41x-usb.c b/drivers/phy/phy-stih41x-usb.c
index a603801..c093b47 100644
--- a/drivers/phy/phy-stih41x-usb.c
+++ b/drivers/phy/phy-stih41x-usb.c
@@ -87,8 +87,12 @@ static int stih41x_usb_phy_power_on(struct phy *phy)
 		return ret;
 	}
 
-	return regmap_update_bits(phy_dev->regmap, phy_dev->cfg->syscfg,
-			phy_dev->cfg->oscok, phy_dev->cfg->oscok);
+	ret = regmap_update_bits(phy_dev->regmap, phy_dev->cfg->syscfg,
+				 phy_dev->cfg->oscok, phy_dev->cfg->oscok);
+	if (ret)
+		clk_disable_unprepare(phy_dev->clk);
+
+	return ret;
 }
 
 static int stih41x_usb_phy_power_off(struct phy *phy)
-- 
1.7.9.5

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