linux-kernel - [PATCH] drm/amd/display: Use swap() instead of open coding it

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Message-Id: <20231018061531.11565-1-jiapeng.chong@linux.alibaba.com>
Date:   Wed, 18 Oct 2023 14:15:31 +0800
From:   Jiapeng Chong <jiapeng.chong@...ux.alibaba.com>
To:     harry.wentland@....com
Cc:     sunpeng.li@....com, Rodrigo.Siqueira@....com,
        alexander.deucher@....com, christian.koenig@....com,
        Xinhui.Pan@....com, airlied@...il.com, daniel@...ll.ch,
        amd-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org,
        Jiapeng Chong <jiapeng.chong@...ux.alibaba.com>,
        Abaci Robot <abaci@...ux.alibaba.com>
Subject: [PATCH] drm/amd/display: Use swap() instead of open coding it

Swap is a function interface that provides exchange function. To avoid
code duplication, we can use swap function.

./drivers/gpu/drm/amd/display/dc/dml2/dml2_dc_resource_mgmt.c:445:127-128: WARNING opportunity for swap().

Reported-by: Abaci Robot <abaci@...ux.alibaba.com>
Closes: https://bugzilla.openanolis.cn/show_bug.cgi?id=6903
Signed-off-by: Jiapeng Chong <jiapeng.chong@...ux.alibaba.com>
---
 drivers/gpu/drm/amd/display/dc/dml2/dml2_dc_resource_mgmt.c | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/dc/dml2/dml2_dc_resource_mgmt.c b/drivers/gpu/drm/amd/display/dc/dml2/dml2_dc_resource_mgmt.c
index 36baf35bb170..5cbb2db9dfd1 100644
--- a/drivers/gpu/drm/amd/display/dc/dml2/dml2_dc_resource_mgmt.c
+++ b/drivers/gpu/drm/amd/display/dc/dml2/dml2_dc_resource_mgmt.c
@@ -425,7 +425,6 @@ static void sort_pipes_for_splitting(struct dc_plane_pipe_pool *pipes)
 {
 	bool sorted, swapped;
 	unsigned int cur_index;
-	unsigned int temp;
 	int odm_slice_index;
 
 	for (odm_slice_index = 0; odm_slice_index < pipes->num_pipes_assigned_to_plane_for_odm_combine; odm_slice_index++) {
@@ -441,10 +440,7 @@ static void sort_pipes_for_splitting(struct dc_plane_pipe_pool *pipes)
 		swapped = false;
 		while (!sorted) {
 			if (pipes->pipes_assigned_to_plane[odm_slice_index][cur_index] > pipes->pipes_assigned_to_plane[odm_slice_index][cur_index + 1]) {
-				temp = pipes->pipes_assigned_to_plane[odm_slice_index][cur_index];
-				pipes->pipes_assigned_to_plane[odm_slice_index][cur_index] = pipes->pipes_assigned_to_plane[odm_slice_index][cur_index + 1];
-				pipes->pipes_assigned_to_plane[odm_slice_index][cur_index + 1] = temp;
-
+				swap(pipes->pipes_assigned_to_plane[odm_slice_index][cur_index], pipes->pipes_assigned_to_plane[odm_slice_index][cur_index + 1]);
 				swapped = true;
 			}
 
-- 
2.20.1.7.g153144c