From 03ce7b387e8b0f4a1dc97a878545bdf7c7f23251 Mon Sep 17 00:00:00 2001
From: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Date: Tue, 18 Oct 2022 08:28:15 -0400
Subject: [PATCH] drm/amd/display: Check if link state is valid
Git-commit: 03ce7b387e8b0f4a1dc97a878545bdf7c7f23251
Patch-mainline: v6.2-rc1
References: git-fixes

The link state is set to false if there is no link and local sink. Even
though the stream state may not change, it is desirable to commit the
new stream when HPD goes low to high.

Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Co-developed-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 drivers/gpu/drm/amd/display/dc/core/dc.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/gpu/drm/amd/display/dc/core/dc.c b/drivers/gpu/drm/amd/display/dc/core/dc.c
index 997ab031f816..7b576bd24cb5 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc.c
@@ -1500,6 +1500,8 @@ static bool context_changed(
 	for (i = 0; i < dc->current_state->stream_count; i++) {
 		if (dc->current_state->streams[i] != context->streams[i])
 			return true;
+		if (!context->streams[i]->link->link_state_valid)
+			return true;
 	}
 
 	return false;
-- 
2.43.0