| From | Greg Kroah-Hartman <> | Subject | [PATCH 5.12 40/48] drm/amd/display: Allow bandwidth validation for 0 streams. | Date | Wed, 16 Jun 2021 17:33:50 +0200 |
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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 bfbc23b76cd5..3e3c898848bd 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c +++ b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c @@ -3231,7 +3231,7 @@ 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; } -- 2.30.2
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