From: Bindu Ramamurthy bindu.r@amd.com

[ Upstream commit ba8e59773ae59818695d1e20b8939282da80ec8c ]

[Why] Bandwidth calculations are triggered for non zero streams, and in case of 0 streams, these calculations were skipped with pstate status not being updated.

[How] As the pstate status is applicable for non zero streams, check added for allowing 0 streams inline with dcn internal bandwidth validations.

Signed-off-by: Bindu Ramamurthy bindu.r@amd.com Reviewed-by: Roman Li Roman.Li@amd.com Signed-off-by: Alex Deucher alexander.deucher@amd.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c | 2 +- 1 file changed, 1 insertion(+), 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 08062de3fbeb..2b1175bb2dae 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c +++ b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c @@ -2917,7 +2917,7 @@ bool dcn20_validate_bandwidth(struct dc *dc, struct dc_state *context, voltage_supported = dcn20_validate_bandwidth_internal(dc, context, false); dummy_pstate_supported = context->bw_ctx.bw.dcn.clk.p_state_change_support;

- if (voltage_supported && dummy_pstate_supported) { + if (voltage_supported && (dummy_pstate_supported || !(context->stream_count))) { context->bw_ctx.bw.dcn.clk.p_state_change_support = false; goto restore_dml_state; }