linux-kernel - [PATCH] phy: rockchip-usb: Fixup rockchip_usb_phy_power

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Date:	Wed, 04 Mar 2015 09:33:32 +0800
From:	Axel Lin <axel.lin@...ics.com>
To:	Kishon Vijay Abraham I <kishon@...com>
Cc:	Yunzhi Li <lyz@...k-chips.com>,
	Doug Anderson <dianders@...omium.org>,
	Heiko Stuebner <heiko@...ech.de>,
	linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH] phy: rockchip-usb: Fixup rockchip_usb_phy_power_on failure
 path

If rockchip_usb_phy_power() fails, we need to call clk_disable_unprepare()
before return. This is to ensure we have balanced clk_enable/disable calls.
Also remove unneeded ret checking in rockchip_usb_phy_power_off.

Signed-off-by: Axel Lin <axel.lin@...ics.com>
---
 drivers/phy/phy-rockchip-usb.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/phy/phy-rockchip-usb.c b/drivers/phy/phy-rockchip-usb.c
index 22011c3..7d4c336 100644
--- a/drivers/phy/phy-rockchip-usb.c
+++ b/drivers/phy/phy-rockchip-usb.c
@@ -61,8 +61,6 @@ static int rockchip_usb_phy_power_off(struct phy *_phy)
 		return ret;
 
 	clk_disable_unprepare(phy->clk);
-	if (ret)
-		return ret;
 
 	return 0;
 }
@@ -78,8 +76,10 @@ static int rockchip_usb_phy_power_on(struct phy *_phy)
 
 	/* Power up usb phy analog blocks by set siddq 0 */
 	ret = rockchip_usb_phy_power(phy, 0);
-	if (ret)
+	if (ret) {
+		clk_disable_unprepare(phy->clk);
 		return ret;
+	}
 
 	return 0;
 }
-- 
1.9.1



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