From: Jacob Chen <jacob2.chen@rock-chips.com>
Date: Fri, 10 Mar 2017 07:21:08 +0000 (+0800)
Subject: drm/rockchip: rga: fix potential buffer overflow
X-Git-Tag: firefly_0821_release~348
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=181f6bdcfff57429a14e5ce5dbfb4b1ea06ed593;p=firefly-linux-kernel-4.4.55.git

drm/rockchip: rga: fix potential buffer overflow

Change-Id: Id923e38264855320fbe994bed156bf16eac60245
Signed-off-by: Jacob Chen <jacob2.chen@rock-chips.com>
---

diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_rga.h b/drivers/gpu/drm/rockchip/rockchip_drm_rga.h
index 2dbd10d1f85d..49426eb0034c 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_rga.h
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_rga.h
@@ -8,7 +8,7 @@
 /* cmdlist data structure */
 struct rga_cmdlist {
 	u32		head;
-	u32		data[RGA_CMDLIST_SIZE * 2];
+	u32		data[(RGA_CMDLIST_SIZE + RGA_CMDBUF_SIZE) * 2];
 	u32		last;	/* last data offset */
 	void		*src_mmu_pages;
 	void		*dst_mmu_pages;