linux-kernel - [PATCH AUTOSEL 4.14 82/95] drm/rockchip: fix for mailbox read validation.

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Date:   Tue,  7 May 2019 01:38:11 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Damian Kos <dkos@...ence.com>, Heiko Stuebner <heiko@...ech.de>,
        Sasha Levin <alexander.levin@...rosoft.com>,
        dri-devel@...ts.freedesktop.org, linux-rockchip@...ts.infradead.org
Subject: [PATCH AUTOSEL 4.14 82/95] drm/rockchip: fix for mailbox read validation.

From: Damian Kos <dkos@...ence.com>

[ Upstream commit e4056bbb6719fe713bfc4030ac78e8e97ddf7574 ]

This is basically the same fix as in
commit fa68d4f8476b ("drm/rockchip: fix for mailbox read size")
but for cdn_dp_mailbox_validate_receive function.

See patchwork.kernel.org/patch/10671981/ for details.

Signed-off-by: Damian Kos <dkos@...ence.com>
Signed-off-by: Heiko Stuebner <heiko@...ech.de>
Link: https://patchwork.freedesktop.org/patch/msgid/1542640463-18332-1-git-send-email-dkos@cadence.com
Signed-off-by: Sasha Levin <alexander.levin@...rosoft.com>
---
 drivers/gpu/drm/rockchip/cdn-dp-reg.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/rockchip/cdn-dp-reg.c b/drivers/gpu/drm/rockchip/cdn-dp-reg.c
index 0ed7e91471f6..4df201d21f27 100644
--- a/drivers/gpu/drm/rockchip/cdn-dp-reg.c
+++ b/drivers/gpu/drm/rockchip/cdn-dp-reg.c
@@ -113,7 +113,7 @@ static int cdp_dp_mailbox_write(struct cdn_dp_device *dp, u8 val)
 
 static int cdn_dp_mailbox_validate_receive(struct cdn_dp_device *dp,
 					   u8 module_id, u8 opcode,
-					   u8 req_size)
+					   u16 req_size)
 {
 	u32 mbox_size, i;
 	u8 header[4];
-- 
2.20.1