From 8b8eda01441050e60c73172e144bab3c7cdef5e9 Mon Sep 17 00:00:00 2001
From: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>
Date: Fri, 6 Sep 2019 11:12:14 -0400
Subject: drm/amd/display: fix pipe re-assignment when odm present
Git-commit: 8b8eda01441050e60c73172e144bab3c7cdef5e9
Patch-mainline: v5.5-rc1
References: bsc#1152489
Currently pipe split may steal an existing ODM pipe depending on stream
sequence. This change prevents that from happening as easily.
Signed-off-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>
Reviewed-by: Gary Kattan <Gary.Kattan@amd.com>
Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
---
drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c
index f2a0ca0e6010..b09c3d1aa827 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c
@@ -2202,7 +2202,8 @@ static struct pipe_ctx *dcn20_find_secondary_pipe(struct dc *dc,
*/
if (secondary_pipe == NULL) {
for (j = dc->res_pool->pipe_count - 1; j >= 0; j--) {
- if (dc->current_state->res_ctx.pipe_ctx[j].top_pipe == NULL) {
+ if (dc->current_state->res_ctx.pipe_ctx[j].top_pipe == NULL
+ && dc->current_state->res_ctx.pipe_ctx[j].prev_odm_pipe == NULL) {
preferred_pipe_idx = j;
if (res_ctx->pipe_ctx[preferred_pipe_idx].stream == NULL) {
--
2.28.0