[PATCH 14/18] drm/amd/display: Fix writeback_info is not removed

[Alex Hung]

[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.

Signed-off-by: Alex Hung <alex.h...@amd.com>
---
 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 5b89df8fccca..0e3ade920c4d 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_stream.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_stream.c
@@ -565,11 +565,12 @@ 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;
-- 
2.41.0