1 files changed, 5 insertions, 0 deletions

diff --git a/drivers/gpu/drm/i915/intel_crt.c b/drivers/gpu/drm/i915/intel_crt.c
index 9f3d3e56341..79dd4026586 100644
--- a/drivers/gpu/drm/i915/intel_crt.c
+++ b/drivers/gpu/drm/i915/intel_crt.c
@@ -157,6 +157,9 @@ static bool intel_ironlake_crt_detect_hotplug(struct drm_connector *connector)
         adpa = I915_READ(PCH_ADPA);
 
         adpa &= ~ADPA_CRT_HOTPLUG_MASK;
+        /* disable HPD first */
+        I915_WRITE(PCH_ADPA, adpa);
+        (void)I915_READ(PCH_ADPA);
 
         adpa |= (ADPA_CRT_HOTPLUG_PERIOD_128 |
                         ADPA_CRT_HOTPLUG_WARMUP_10MS |
@@ -548,4 +551,6 @@ void intel_crt_init(struct drm_device *dev)
         drm_connector_helper_add(connector, &intel_crt_connector_helper_funcs);
 
         drm_sysfs_connector_add(connector);
+
+        dev_priv->hotplug_supported_mask |= CRT_HOTPLUG_INT_STATUS;
 }