From: Dmytro Laktyushkin <dmytro.laktyushkin@amd.com>
Date: Mon, 13 Nov 2023 18:12:44 +0000 (-0500)
Subject: drm/amd/display: block dcn315 dynamic crb allocation when unintended
X-Git-Tag: v6.8-rc1~21^2~25^2~22
X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=2e583200907cc43f062321bf751fe4b0960dbecf;p=linux-block.git

drm/amd/display: block dcn315 dynamic crb allocation when unintended

[WHY/HOW]
Limit the dynamic crb to dual stream configs that include eDP

Reviewed-by: Charlene Liu <charlene.liu@amd.com>
Acked-by: Tom Chung <chiahsuan.chung@amd.com>
Signed-off-by: Dmytro Laktyushkin <dmytro.laktyushkin@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---

diff --git a/drivers/gpu/drm/amd/display/dc/resource/dcn315/dcn315_resource.c b/drivers/gpu/drm/amd/display/dc/resource/dcn315/dcn315_resource.c
index cb8024eee8e4..515ba435f759 100644
--- a/drivers/gpu/drm/amd/display/dc/resource/dcn315/dcn315_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/resource/dcn315/dcn315_resource.c
@@ -1631,8 +1631,10 @@ static bool allow_pixel_rate_crb(struct dc *dc, struct dc_state *context)
 	int i;
 	struct resource_context *res_ctx = &context->res_ctx;
 
-	/*Don't apply for single stream*/
-	if (context->stream_count < 2)
+	/* Only apply for dual stream scenarios with edp*/
+	if (context->stream_count != 2)
+		return false;
+	if (context->streams[0]->signal != SIGNAL_TYPE_EDP && context->streams[1]->signal != SIGNAL_TYPE_EDP)
 		return false;
 
 	for (i = 0; i < dc->res_pool->pipe_count; i++) {