drm/amd/display: Fix for the no Audio bug with Tiled Displays

From Mustapha Ghaddar
dd3cea3425226565c959a1a6b1a1cce2e3394713 in linux 5.10.y/5.10.87
5ceaebcda9061c04f439c93961f0819878365c0f in mainline linux

diff --git a/sys/dev/pci/drm/amd/display/dc/core/dc_resource.c b/sys/dev/pci/drm/amd/display/dc/core/dc_resource.c
index 1b6aedc..182da37 100644 (file)
--- a/sys/dev/pci/drm/amd/display/dc/core/dc_resource.c
+++ b/sys/dev/pci/drm/amd/display/dc/core/dc_resource.c
@@ -1698,6 +1698,10 @@ 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)
+               return false;
+
        return true;
 }