From 8cd2038498ff79f0325d6e8844431a5de77b0149 Mon Sep 17 00:00:00 2001
From: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Date: Thu, 22 Jun 2023 16:14:22 -0400
Subject: [PATCH] drm/amd/display: Skip querying caps when DMCUB emulation is
in use
[Why]
Workaround to avoid accessing DMCUB state too early if the emulator
is in use - we don't support any of the features the caps are querying
with emulation anyway.
[How]
Guard the query if emulation is in use.
Reviewed-by: Charlene Liu <charlene.liu@amd.com>
Acked-by: Alan Liu <haoping.liu@amd.com>
Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
---
drivers/gpu/drm/amd/display/dc/dc_dmub_srv.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/gpu/drm/amd/display/dc/dc_dmub_srv.c b/drivers/gpu/drm/amd/display/dc/dc_dmub_srv.c
index c753c6f30dd71..24433409d7def 100644
--- a/drivers/gpu/drm/amd/display/dc/dc_dmub_srv.c
+++ b/drivers/gpu/drm/amd/display/dc/dc_dmub_srv.c
@@ -381,6 +381,9 @@ void dc_dmub_srv_query_caps_cmd(struct dc_dmub_srv *dc_dmub_srv)
{
union dmub_rb_cmd cmd = { 0 };
+ if (dc_dmub_srv->ctx->dc->debug.dmcub_emulation)
+ return;
+
memset(&cmd, 0, sizeof(cmd));
/* Prepare fw command */
--
GitLab