[PATCH AUTOSEL 6.6 17/73] drm/amd/display: Fix writeback_info is not removed

[Sasha Levin]

From: Alex Hung <alex.hung at amd.com>

[ Upstream commit 5b89d2ccc8466e0445a4994cb288fc009b565de5 ]

[WHY]
Counter j was not updated to present the num of writeback_info when
writeback pipes are removed.

[HOW]
update j (num of writeback info) under the correct condition.

Reviewed-by: Harry Wentland <harry.wentland at amd.com>
Signed-off-by: Alex Hung <alex.hung at amd.com>
Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
Signed-off-by: Sasha Levin <sashal at kernel.org>
---
 drivers/gpu/drm/amd/display/dc/core/dc_stream.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_stream.c b/drivers/gpu/drm/amd/display/dc/core/dc_stream.c
index c232d38e70ae..79f3d7648eb7 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_stream.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_stream.c
@@ -546,11 +546,12 @@ bool dc_stream_remove_writeback(struct dc *dc,
 			if (stream->writeback_info[i].dwb_pipe_inst == dwb_pipe_inst)
 				stream->writeback_info[i].wb_enabled = false;
 
-			if (j < i)
-				/* trim the array */
+			/* trim the array */
+			if (j < i) {
 				memcpy(&stream->writeback_info[j], &stream->writeback_info[i],
 						sizeof(struct dc_writeback_info));
-			j++;
+				j++;
+			}
 		}
 	}
 	stream->num_wb_info = j;
-- 
2.43.0