[Intel-gfx] [PATCH 10/10] drm/i915: Fix intel_dp_hot_plug()

[Todd Previte]

The hot plug function for DP appears to have been broken somewhere along the way. Without
this function being operational, hot plug events are not correctly received for compliance
testing. This patch implements the necessary functionality to resolve that issue.

Signed-off-by: Todd Previte <tprevite at gmail.com>
---
 drivers/gpu/drm/i915/intel_dp.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index 9da948c..8005955 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -4807,6 +4807,13 @@ static const struct drm_encoder_funcs intel_dp_enc_funcs = {
 void
 intel_dp_hot_plug(struct intel_encoder *intel_encoder)
 {
+	struct intel_dp *intel_dp = enc_to_intel_dp(&intel_encoder->base);
+	struct drm_device *dev = intel_encoder->base.dev;
+
+	drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
+	intel_dp_check_link_status(intel_dp);
+	drm_modeset_unlock(&dev->mode_config.connection_mutex);
+
 	return;
 }
 
-- 
1.9.1