linux-kernel - [PATCH] drm/omap: fix a NULL pointer dereferenced

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Message-ID: <1647505239-5817-1-git-send-email-baihaowen@meizu.com>
Date:   Thu, 17 Mar 2022 16:20:39 +0800
From:   Haowen Bai <baihaowen@...zu.com>
To:     <tomba@...nel.org>, <airlied@...ux.ie>, <daniel@...ll.ch>
CC:     <dri-devel@...ts.freedesktop.org>, <linux-kernel@...r.kernel.org>,
        "Haowen Bai" <baihaowen@...zu.com>
Subject: [PATCH] drm/omap: fix a NULL pointer dereferenced

r_ovl is NULL but dereferenced

Signed-off-by: Haowen Bai <baihaowen@...zu.com>
---
 drivers/gpu/drm/omapdrm/omap_overlay.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/drivers/gpu/drm/omapdrm/omap_overlay.c b/drivers/gpu/drm/omapdrm/omap_overlay.c
index 10730c9..d09aaf6 100644
--- a/drivers/gpu/drm/omapdrm/omap_overlay.c
+++ b/drivers/gpu/drm/omapdrm/omap_overlay.c
@@ -86,7 +86,6 @@ int omap_overlay_assign(struct drm_atomic_state *s, struct drm_plane *plane,
 		r_ovl = omap_plane_find_free_overlay(s->dev, overlay_map,
 						     caps, fourcc);
 		if (!r_ovl) {
-			overlay_map[r_ovl->idx] = NULL;
 			*overlay = NULL;
 			return -ENOMEM;
 		}
-- 
2.7.4