drm/i915: only enable hotplug for detected outputs

This patch changes around our hotplug enable code a bit to only enable
it for ports we actually detect and initialize.  This prevents problems
with stuck or spurious interrupts on outputs that aren't actually wired
up, and is generally more correct.

Fixes FDO bug #23183.

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Eric Anholt <eric@anholt.net>

1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/gpu/drm/i915/intel_sdvo.c b/drivers/gpu/drm/i915/intel_sdvo.c
index 24a3dc99716c..de5144c8c153 100644
--- a/drivers/gpu/drm/i915/intel_sdvo.c
+++ b/drivers/gpu/drm/i915/intel_sdvo.c
@@ -2662,6 +2662,7 @@ static void intel_sdvo_create_enhance_property(struct drm_connector *connector)
 
 bool intel_sdvo_init(struct drm_device *dev, int output_device)
 {
+        struct drm_i915_private *dev_priv = dev->dev_private;
         struct drm_connector *connector;
         struct intel_output *intel_output;
         struct intel_sdvo_priv *sdvo_priv;
@@ -2708,10 +2709,12 @@ bool intel_sdvo_init(struct drm_device *dev, int output_device)
                 intel_output->ddc_bus = intel_i2c_create(dev, GPIOE, "SDVOB DDC BUS");
                 sdvo_priv->analog_ddc_bus = intel_i2c_create(dev, GPIOA,
                                                 "SDVOB/VGA DDC BUS");
+                dev_priv->hotplug_supported_mask |= SDVOB_HOTPLUG_INT_STATUS;
         } else {
                 intel_output->ddc_bus = intel_i2c_create(dev, GPIOE, "SDVOC DDC BUS");
                 sdvo_priv->analog_ddc_bus = intel_i2c_create(dev, GPIOA,
                                                 "SDVOC/VGA DDC BUS");
+                dev_priv->hotplug_supported_mask |= SDVOC_HOTPLUG_INT_STATUS;
         }
 
         if (intel_output->ddc_bus == NULL)