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drm/amd/display: Allow bandwidth validation for 0 streams. 

[ 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>
pull/379/head^2
Bindu Ramamurthy 2021-05-20 10:06:04 -04:00 committed by Greg Kroah-Hartman
parent ecd26536ec
commit 34fe4ccb1f
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c
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@ -3232,7 +3232,7 @@ static noinline bool dcn20_validate_bandwidth_fp(struct dc *dc,
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;
}