[PATCH AUTOSEL 5.17 07/49] drm/amd/display: fix audio format not updated after edid updated

From: Sasha Levin
Date: Mon Apr 11 2022 - 20:45:02 EST


From: Charlene Liu <Charlene.Liu@xxxxxxx>

[ Upstream commit 5e8a71cf13bc9184fee915b2220be71b4c6cac74 ]

[why]
for the case edid change only changed audio format.
driver still need to update stream.

Reviewed-by: Alvin Lee <Alvin.Lee2@xxxxxxx>
Reviewed-by: Aric Cyr <Aric.Cyr@xxxxxxx>
Acked-by: Alex Hung <alex.hung@xxxxxxx>
Signed-off-by: Charlene Liu <Charlene.Liu@xxxxxxx>
Tested-by: Daniel Wheeler <daniel.wheeler@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/gpu/drm/amd/display/dc/core/dc_resource.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_resource.c b/drivers/gpu/drm/amd/display/dc/core/dc_resource.c
index 18757c158523..bb8a762cf8da 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_resource.c
@@ -1664,8 +1664,8 @@ bool dc_is_stream_unchanged(
if (old_stream->ignore_msa_timing_param != stream->ignore_msa_timing_param)
return false;

- // Only Have Audio left to check whether it is same or not. This is a corner case for Tiled sinks
- if (old_stream->audio_info.mode_count != stream->audio_info.mode_count)
+ /*compare audio info*/
+ if (memcmp(&old_stream->audio_info, &stream->audio_info, sizeof(stream->audio_info)) != 0)
return false;

return true;
--
2.35.1