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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - [BDW][drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)!"
href="https://bugs.freedesktop.org/show_bug.cgi?id=92084#c12">Comment # 12</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - [BDW][drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)!"
href="https://bugs.freedesktop.org/show_bug.cgi?id=92084">bug 92084</a>
from <span class="vcard"><a class="email" href="mailto:jani.nikula@intel.com" title="Jani Nikula <jani.nikula@intel.com>"> <span class="fn">Jani Nikula</span></a>
</span></b>
<pre>However this helps. We're missing something.
diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
index 76bd40e13391..0d524034abd7 100644
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -1827,6 +1827,9 @@ static void ibx_hpd_irq_handler(struct drm_device *dev,
u32 hotplug_trigger,
dig_hotplug_reg = I915_READ(PCH_PORT_HOTPLUG);
I915_WRITE(PCH_PORT_HOTPLUG, dig_hotplug_reg);
+ if (!hotplug_trigger)
+ return;
+
intel_get_hpd_pins(&pin_mask, &long_mask, hotplug_trigger,
dig_hotplug_reg, hpd,
pch_port_hotplug_long_detect);
@@ -1934,8 +1937,7 @@ static void cpt_irq_handler(struct drm_device *dev, u32
pch_iir)
int pipe;
u32 hotplug_trigger = pch_iir & SDE_HOTPLUG_MASK_CPT;
- if (hotplug_trigger)
- ibx_hpd_irq_handler(dev, hotplug_trigger, hpd_cpt);
+ ibx_hpd_irq_handler(dev, hotplug_trigger, hpd_cpt);
if (pch_iir & SDE_AUDIO_POWER_MASK_CPT) {
int port = ffs((pch_iir & SDE_AUDIO_POWER_MASK_CPT) >></pre>
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