[PATCH] drm/amd/display: Temporarily disable hostvm on DCN31

[Alex Deucher <alexander.deucher@amd.com>]

From: Aurabindo Pillai <aurabindo.pillai@amd.com>

With HostVM enabled, DCN31 fails to pass validation for 3x4k60. Some Linux
userspace does not downgrade one of the monitors to 4k30, and the result
is that the monitor does not light up. Disable it until the bandwidth
calculation failure is resolved.

Reviewed-by: Sun peng Li <sunpeng.li@amd.com>
Signed-off-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: Zaeem Mohamed <zaeem.mohamed@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit ba93dddfc92084a1e28ea447ec4f8315f3d8d3fd)
Cc: stable@vger.kernel.org
---
 drivers/gpu/drm/amd/display/dc/resource/dcn31/dcn31_resource.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/display/dc/resource/dcn31/dcn31_resource.c b/drivers/gpu/drm/amd/display/dc/resource/dcn31/dcn31_resource.c
index 911bd60d4fbc..3c42ba8566cf 100644
--- a/drivers/gpu/drm/amd/display/dc/resource/dcn31/dcn31_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/resource/dcn31/dcn31_resource.c
@@ -890,7 +890,7 @@ static const struct dc_debug_options debug_defaults_drv = {
 	.disable_z10 = true,
 	.enable_legacy_fast_update = true,
 	.enable_z9_disable_interface = true, /* Allow support for the PMFW interface for disable Z9*/
-	.dml_hostvm_override = DML_HOSTVM_NO_OVERRIDE,
+	.dml_hostvm_override = DML_HOSTVM_OVERRIDE_FALSE,
 	.using_dml2 = false,
 };
 
-- 
2.49.0