[Intel-gfx] [PATCH 3/4] drm/i915: hdcp_check_link only on CP_IRQ

[Ramalingam C]

HDCP check link is invoked only on CP_IRQ detection, instead of all
short pulses.

v3:
  No Changes.
v4:
  Added sean in cc and collected the reviewed-by received.
v5:
  No Change.
v6:
  No Change.
v7:
  No Change.
v8:
  Rebased.

Signed-off-by: Ramalingam C <ramalingam.c at intel.com>
cc: Sean Paul <seanpaul at chromium.org>
Reviewed-by: Uma Shankar <uma.shankar at intel.com>
Reviewed-by: Sean Paul <seanpaul at chromium.org>
---
 drivers/gpu/drm/i915/intel_dp.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index 1f098e509143..27377bf8105c 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -4530,8 +4530,11 @@ static void intel_dp_check_service_irq(struct intel_dp *intel_dp)
 	if (val & DP_AUTOMATED_TEST_REQUEST)
 		intel_dp_handle_test_request(intel_dp);
 
-	if (val & (DP_CP_IRQ | DP_SINK_SPECIFIC_IRQ))
-		DRM_DEBUG_DRIVER("CP or sink specific irq unhandled\n");
+	if (val & DP_CP_IRQ)
+		intel_hdcp_check_link(intel_dp->attached_connector);
+
+	if (val & DP_SINK_SPECIFIC_IRQ)
+		DRM_DEBUG_DRIVER("Sink specific irq unhandled\n");
 }
 
 /*
@@ -5694,9 +5697,6 @@ intel_dp_hpd_pulse(struct intel_digital_port *intel_dig_port, bool long_hpd)
 
 		handled = intel_dp_short_pulse(intel_dp);
 
-		/* Short pulse can signify loss of hdcp authentication */
-		intel_hdcp_check_link(intel_dp->attached_connector);
-
 		if (!handled)
 			goto put_power;
 	}
-- 
2.7.4