[Intel-gfx] [PATCH 3/4] drm/i915/mst: Clear ACT just before triggering payload allocation

[Ville Syrjala]

From: Ville Syrjälä <ville.syrjala at linux.intel.com>

Follow the bspec sequqnece more closely and clear ACT sent just
before triggering the allocation. Can't see why we'd want to
deviate from the spec sequence here.

Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
---
 drivers/gpu/drm/i915/display/intel_dp_mst.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_dp_mst.c b/drivers/gpu/drm/i915/display/intel_dp_mst.c
index 57eb581b8a50..3c66a3e3cc5e 100644
--- a/drivers/gpu/drm/i915/display/intel_dp_mst.c
+++ b/drivers/gpu/drm/i915/display/intel_dp_mst.c
@@ -791,8 +791,6 @@ static void intel_mst_enable_dp(struct intel_atomic_state *state,
 
 	drm_WARN_ON(&dev_priv->drm, pipe_config->has_pch_encoder);
 
-	clear_act_sent(encoder, pipe_config);
-
 	if (intel_dp_is_uhbr(pipe_config)) {
 		const struct drm_display_mode *adjusted_mode =
 			&pipe_config->hw.adjusted_mode;
@@ -806,6 +804,8 @@ static void intel_mst_enable_dp(struct intel_atomic_state *state,
 
 	intel_ddi_enable_transcoder_func(encoder, pipe_config);
 
+	clear_act_sent(encoder, pipe_config);
+
 	intel_de_rmw(dev_priv, TRANS_DDI_FUNC_CTL(trans), 0,
 		     TRANS_DDI_DP_VC_PAYLOAD_ALLOC);
 
-- 
2.41.0