From: jsg <jsg@openbsd.org>
Date: Sun, 19 Dec 2021 01:30:41 +0000 (+0000)
Subject: drm/amd/display: Fix for the no Audio bug with Tiled Displays
X-Git-Url: http://artulab.com/gitweb/?a=commitdiff_plain;h=06c5638d238ad8d917d1d2c5a845837c50acd91e;p=openbsd

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 1b6aedc98ee..182da37b1ca 100644
--- 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;
 }