linux-kernel - [PATCH] media: Fix resource leaks in of_find_device_by

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Message-Id: <20230530101724.31412-1-luhongfei@vivo.com>
Date:   Tue, 30 May 2023 18:17:18 +0800
From:   Lu Hongfei <luhongfei@...o.com>
To:     Mauro Carvalho Chehab <mchehab@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>,
        Hans Verkuil <hverkuil-cisco@...all.nl>,
        Moudy Ho <moudy.ho@...iatek.com>, Sun Ke <sunke32@...wei.com>,
        Arnd Bergmann <arnd@...db.de>, Lu Hongfei <luhongfei@...o.com>,
        linux-media@...r.kernel.org (open list:MEDIA INPUT INFRASTRUCTURE
        (V4L/DVB)),
        linux-kernel@...r.kernel.org (open list:ARM/Mediatek SoC support),
        linux-arm-kernel@...ts.infradead.org (moderated list:ARM/Mediatek SoC
        support),
        linux-mediatek@...ts.infradead.org (moderated list:ARM/Mediatek SoC
        support)
Cc:     opensource.kernel@...o.com
Subject: [PATCH] media: Fix resource leaks in of_find_device_by_node

Use put_device to release the object get through of_find_device_by_node,
avoiding resource leaks.

Signed-off-by: Lu Hongfei <luhongfei@...o.com>
---
 drivers/media/platform/mediatek/mdp3/mtk-mdp3-comp.c | 2 ++
 1 file changed, 2 insertions(+)
 mode change 100644 => 100755 drivers/media/platform/mediatek/mdp3/mtk-mdp3-comp.c

diff --git a/drivers/media/platform/mediatek/mdp3/mtk-mdp3-comp.c b/drivers/media/platform/mediatek/mdp3/mtk-mdp3-comp.c
index 19a4a085f73a..1fe10a21e395
--- a/drivers/media/platform/mediatek/mdp3/mtk-mdp3-comp.c
+++ b/drivers/media/platform/mediatek/mdp3/mtk-mdp3-comp.c
@@ -892,11 +892,13 @@ static int mdp_get_subsys_id(struct mdp_dev *mdp, struct device *dev,
 	ret = cmdq_dev_get_client_reg(&comp_pdev->dev, &cmdq_reg, index);
 	if (ret != 0) {
 		dev_err(&comp_pdev->dev, "cmdq_dev_get_subsys fail!\n");
+		put_device(&comp_pdev->dev);
 		return -EINVAL;
 	}
 
 	comp->subsys_id = cmdq_reg.subsys;
 	dev_dbg(&comp_pdev->dev, "subsys id=%d\n", cmdq_reg.subsys);
+	put_device(&comp_pdev->dev);
 
 	return 0;
 }
-- 
2.39.0