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From:   Rob Clark <robdclark@gmail.com>
To:     dri-devel@lists.freedesktop.org
Cc:     Rob Clark <robdclark@chromium.org>,
        Chun-Kuang Hu <chunkuang.hu@kernel.org>,
        Philipp Zabel <p.zabel@pengutronix.de>,
        David Airlie <airlied@gmail.com>,
        Daniel Vetter <daniel@ffwll.ch>,
        Matthias Brugger <matthias.bgg@gmail.com>,
        CK Hu <ck.hu@mediatek.com>, Mao Huang <littlecvr@chromium.org>,
        Daniel Kurtz <djkurtz@chromium.org>,
        Bibby Hsieh <bibby.hsieh@mediatek.com>,
        YT Shen <yt.shen@mediatek.com>,
        linux-mediatek@lists.infradead.org (moderated list:DRM DRIVERS FOR
        MEDIATEK),
        linux-arm-kernel@lists.infradead.org (moderated list:ARM/Mediatek SoC
        support), linux-kernel@vger.kernel.org (open list)
Subject: [PATCH] drm/mediatek: Drop unbalanced obj unref
Date:   Thu, 19 Jan 2023 15:12:55 -0800
Message-Id: <20230119231255.2883365-1-robdclark@gmail.com>
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From: Rob Clark <robdclark@chromium.org>

In the error path, mtk_drm_gem_object_mmap() is dropping an obj
reference that it doesn't own.

Fixes: 119f5173628a ("drm/mediatek: Add DRM Driver for Mediatek SoC MT8173.")
Signed-off-by: Rob Clark <robdclark@chromium.org>
---
 drivers/gpu/drm/mediatek/mtk_drm_gem.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/drivers/gpu/drm/mediatek/mtk_drm_gem.c b/drivers/gpu/drm/mediatek/mtk_drm_gem.c
index 9b3d15d3a983..f961c7c7456b 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_gem.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_gem.c
@@ -169,8 +169,6 @@ static int mtk_drm_gem_object_mmap(struct drm_gem_object *obj,
 
 	ret = dma_mmap_attrs(priv->dma_dev, vma, mtk_gem->cookie,
 			     mtk_gem->dma_addr, obj->size, mtk_gem->dma_attrs);
-	if (ret)
-		drm_gem_vm_close(vma);
 
 	return ret;
 }
-- 
2.38.1