linux-kernel - [PATCH -next] drm/amd/display: remove useless if/else

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Date:   Wed, 28 Oct 2020 16:36:11 +0800
From:   Zou Wei <zou_wei@...wei.com>
To:     <harry.wentland@....com>, <sunpeng.li@....com>,
        <alexander.deucher@....com>, <christian.koenig@....com>,
        <airlied@...ux.ie>, <daniel@...ll.ch>
CC:     <amd-gfx@...ts.freedesktop.org>, <dri-devel@...ts.freedesktop.org>,
        <linux-kernel@...r.kernel.org>, Zou Wei <zou_wei@...wei.com>
Subject: [PATCH -next] drm/amd/display: remove useless if/else

Fix the following coccinelle report:

./drivers/gpu/drm/amd/display/dc/calcs/dce_calcs.c:1367:3-5:
WARNING: possible condition with no effect (if == else)

Both branches are the same, so remove the if/else altogether.

Fixes: 81875979f0b2 ("drm/amd/display: Remove extra pairs of parentheses in dce_calcs.c")
Reported-by: Hulk Robot <hulkci@...wei.com>
Signed-off-by: Zou Wei <zou_wei@...wei.com>
---
 drivers/gpu/drm/amd/display/dc/calcs/dce_calcs.c | 11 ++++-------
 1 file changed, 4 insertions(+), 7 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/dc/calcs/dce_calcs.c b/drivers/gpu/drm/amd/display/dc/calcs/dce_calcs.c
index 2c6db37..e4f29cd 100644
--- a/drivers/gpu/drm/amd/display/dc/calcs/dce_calcs.c
+++ b/drivers/gpu/drm/amd/display/dc/calcs/dce_calcs.c
@@ -1364,13 +1364,10 @@ static void calculate_bandwidth(
 	/*if stutter and dram clock state change are gated before cursor then the cursor latency hiding does not limit stutter or dram clock state change*/
 	for (i = 0; i <= maximum_number_of_surfaces - 1; i++) {
 		if (data->enable[i]) {
-			if (dceip->graphics_lb_nodownscaling_multi_line_prefetching == 1) {
-				data->maximum_latency_hiding[i] = bw_add(data->minimum_latency_hiding[i], bw_mul(bw_frc_to_fixed(5, 10), data->total_dmifmc_urgent_latency));
-			}
-			else {
-				/*maximum_latency_hiding(i) = minimum_latency_hiding(i) + 1 / vsr(i) * h_total(i) / pixel_rate(i) + 0.5 * total_dmifmc_urgent_latency*/
-				data->maximum_latency_hiding[i] = bw_add(data->minimum_latency_hiding[i], bw_mul(bw_frc_to_fixed(5, 10), data->total_dmifmc_urgent_latency));
-			}
+			/*maximum_latency_hiding(i) = minimum_latency_hiding(i) + 1 / vsr(i) **/
+			/*      h_total(i) / pixel_rate(i) + 0.5 * total_dmifmc_urgent_latency*/
+			data->maximum_latency_hiding[i] = bw_add(data->minimum_latency_hiding[i],
+				bw_mul(bw_frc_to_fixed(5, 10), data->total_dmifmc_urgent_latency));
 			data->maximum_latency_hiding_with_cursor[i] = bw_min2(data->maximum_latency_hiding[i], data->cursor_latency_hiding[i]);
 		}
 	}
-- 
2.6.2