linux-kernel - [PATCH 5.4 106/408] drm/amd/display: Fix wrong return value in dm_update_plane

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Date:   Tue, 27 Oct 2020 14:50:44 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Leo Li <sunpeng.li@....com>,
        Tianjia Zhang <tianjia.zhang@...ux.alibaba.com>,
        Alex Deucher <alexander.deucher@....com>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.4 106/408] drm/amd/display: Fix wrong return value in dm_update_plane_state()

From: Tianjia Zhang <tianjia.zhang@...ux.alibaba.com>

[ Upstream commit c35376137e940c3389df2726a92649c01a9844b4 ]

On an error exit path, a negative error code should be returned
instead of a positive return value.

Fixes: 9e869063b0021 ("drm/amd/display: Move iteration out of dm_update_planes")
Cc: Leo Li <sunpeng.li@....com>
Signed-off-by: Tianjia Zhang <tianjia.zhang@...ux.alibaba.com>
Signed-off-by: Alex Deucher <alexander.deucher@....com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index 2384aa018993d..7c58085031732 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -6984,8 +6984,7 @@ static int dm_update_plane_state(struct dc *dc,
 				dm_old_plane_state->dc_state,
 				dm_state->context)) {
 
-			ret = EINVAL;
-			return ret;
+			return -EINVAL;
 		}
 
 
-- 
2.25.1