linux-kernel - [PATCH v2] phy: phy-mtk-tphy: Fix some resource leaks in mtk_phy

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Date:   Wed, 19 May 2021 18:37:39 +0800
From:   Tiezhu Yang <yangtiezhu@...ngson.cn>
To:     Chunfeng Yun <chunfeng.yun@...iatek.com>,
        Kishon Vijay Abraham I <kishon@...com>,
        Vinod Koul <vkoul@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>
Cc:     linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org, linux-phy@...ts.infradead.org,
        linux-kernel@...r.kernel.org, lkp@...el.com,
        Dan Carpenter <dan.carpenter@...cle.com>,
        Heiko Stuebner <heiko@...ech.de>, kbuild@...ts.01.org
Subject: [PATCH v2] phy: phy-mtk-tphy: Fix some resource leaks in mtk_phy_init()

Use clk_disable_unprepare() in the error path of mtk_phy_init() to fix
some resource leaks.

Reported-by: kernel test robot <lkp@...el.com>
Reported-by: Dan Carpenter <dan.carpenter@...cle.com>
Signed-off-by: Tiezhu Yang <yangtiezhu@...ngson.cn>
Reviewed-by: Chunfeng Yun <chunfeng.yun@...iatek.com>
---

v2: remove Fixes tag and add Reviewed-by tag

 drivers/phy/mediatek/phy-mtk-tphy.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/phy/mediatek/phy-mtk-tphy.c b/drivers/phy/mediatek/phy-mtk-tphy.c
index cdbcc49..731c483 100644
--- a/drivers/phy/mediatek/phy-mtk-tphy.c
+++ b/drivers/phy/mediatek/phy-mtk-tphy.c
@@ -949,6 +949,8 @@ static int mtk_phy_init(struct phy *phy)
 		break;
 	default:
 		dev_err(tphy->dev, "incompatible PHY type\n");
+		clk_disable_unprepare(instance->ref_clk);
+		clk_disable_unprepare(instance->da_ref_clk);
 		return -EINVAL;
 	}
 
-- 
2.1.0