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drm/i915/crt: Make sure the hotplug interrupt is enabled 

After disabling the hotplug interrupts for VGA detection on Ironlake, be
sure to re-enable them again afterwards.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=30378
Signed-off-by: Yuanhan Liu <yuanhan.liu@intel.com>
Cc: stable@kernel.org
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Yuanhan Liu 2010-10-08 10:18:01 +01:00 committed by Chris Wilson
parent 382b093627
commit 1510a97182
1 changed files with 2 additions and 1 deletions
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3
drivers/gpu/drm/i915/intel_crt.c
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@ -191,7 +191,8 @@ static bool intel_ironlake_crt_detect_hotplug(struct drm_connector *connector)
DRM_DEBUG_KMS("timed out waiting for FORCE_TRIGGER");
if (turn_off_dac) {
I915_WRITE(PCH_ADPA, temp);
/* Make sure hotplug is enabled */
I915_WRITE(PCH_ADPA, temp | ADPA_CRT_HOTPLUG_ENABLE);
(void)I915_READ(PCH_ADPA);
}