linux-kernel - [PATCH 04/20] phy: meson8b-usb2: fix missing clk_disable

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Date:   Fri, 18 Nov 2016 18:58:27 +0530
From:   Kishon Vijay Abraham I <kishon@...com>
To:     <gregkh@...uxfoundation.org>
CC:     <kishon@...com>, <linux-kernel@...r.kernel.org>
Subject: [PATCH 04/20] phy: meson8b-usb2: fix missing clk_disable_unprepare() on error

From: Wei Yongjun <weiyongjun1@...wei.com>

Fix the missing clk_disable_unprepare() before return from
phy_meson8b_usb2_power_on() in the error handling case.

Signed-off-by: Wei Yongjun <weiyongjun1@...wei.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@...com>
---
 drivers/phy/phy-meson8b-usb2.c |    3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/phy/phy-meson8b-usb2.c b/drivers/phy/phy-meson8b-usb2.c
index 73bf632..dca3947 100644
--- a/drivers/phy/phy-meson8b-usb2.c
+++ b/drivers/phy/phy-meson8b-usb2.c
@@ -158,6 +158,7 @@ static int phy_meson8b_usb2_power_on(struct phy *phy)
 	ret = clk_prepare_enable(priv->clk_usb);
 	if (ret) {
 		dev_err(&phy->dev, "Failed to enable USB DDR clock\n");
+		clk_disable_unprepare(priv->clk_usb_general);
 		return ret;
 	}
 
@@ -190,6 +191,8 @@ static int phy_meson8b_usb2_power_on(struct phy *phy)
 		if (phy_meson8b_usb2_read(priv, REG_ADP_BC) &
 			REG_ADP_BC_ACA_PIN_FLOAT) {
 			dev_warn(&phy->dev, "USB ID detect failed!\n");
+			clk_disable_unprepare(priv->clk_usb);
+			clk_disable_unprepare(priv->clk_usb_general);
 			return -EINVAL;
 		}
 	}
-- 
1.7.9.5