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>
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@ -191,7 +191,8 @@ static bool intel_ironlake_crt_detect_hotplug(struct drm_connector *connector)
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DRM_DEBUG_KMS("timed out waiting for FORCE_TRIGGER");
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if (turn_off_dac) {
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I915_WRITE(PCH_ADPA, temp);
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/* Make sure hotplug is enabled */
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I915_WRITE(PCH_ADPA, temp | ADPA_CRT_HOTPLUG_ENABLE);
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(void)I915_READ(PCH_ADPA);
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}
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