linux-kernel - [PATCH -next] phy: meson8b-usb2: fix missing clk_disable

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Date:   Sat, 22 Oct 2016 14:33:42 +0000
From:   Wei Yongjun <weiyj.lk@...il.com>
To:     Kishon Vijay Abraham I <kishon@...com>,
        Carlo Caione <carlo@...one.org>,
        Kevin Hilman <khilman@...libre.com>
Cc:     Wei Yongjun <weiyongjun1@...wei.com>, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-amlogic@...ts.infradead.org
Subject: [PATCH -next] 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>
---
 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;
 		}
 	}