linux-kernel - [PATCH] media: mtk-mdp: Fix a reference leak bug in mtk_mdp

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Message-Id: <20251008090156.14224-1-haoxiang_li2024@163.com>
Date: Wed,  8 Oct 2025 17:01:56 +0800
From: Haoxiang Li <haoxiang_li2024@....com>
To: minghsiu.tsai@...iatek.com,
	houlong.wei@...iatek.com,
	andrew-ct.chen@...iatek.com,
	mchehab@...nel.org,
	matthias.bgg@...il.com,
	angelogioacchino.delregno@...labora.com,
	hans.verkuil@...co.com,
	christophe.jaillet@...adoo.fr,
	nicolas@...fresne.ca
Cc: linux-media@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-mediatek@...ts.infradead.org,
	Haoxiang Li <haoxiang_li2024@....com>,
	stable@...r.kernel.org
Subject: [PATCH] media: mtk-mdp: Fix a reference leak bug in mtk_mdp_remove()

In mtk_mdp_probe(), vpu_get_plat_device() increases the reference
count of the returned platform device. Add platform_device_put()
to prevent reference leak.

Fixes: c8eb2d7e8202 ("[media] media: Add Mediatek MDP Driver")
Cc: stable@...r.kernel.org
Signed-off-by: Haoxiang Li <haoxiang_li2024@....com>
---
 drivers/media/platform/mediatek/mdp/mtk_mdp_core.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/media/platform/mediatek/mdp/mtk_mdp_core.c b/drivers/media/platform/mediatek/mdp/mtk_mdp_core.c
index 80fdc6ff57e0..eb212ca1a083 100644
--- a/drivers/media/platform/mediatek/mdp/mtk_mdp_core.c
+++ b/drivers/media/platform/mediatek/mdp/mtk_mdp_core.c
@@ -242,6 +242,7 @@ static void mtk_mdp_remove(struct platform_device *pdev)
 
 	pm_runtime_disable(&pdev->dev);
 	vb2_dma_contig_clear_max_seg_size(&pdev->dev);
+	platform_device_put(mdp->vpu_dev);
 	mtk_mdp_unregister_m2m_device(mdp);
 	v4l2_device_unregister(&mdp->v4l2_dev);
 
-- 
2.25.1