drm/i915: merge the two hpd loops in intel_hpd_irq_handler to one

Nothing in the two consecutive loops over hpd pins depends on state in a
larger context than the single hpd pin. If we skip the rest of the loop
on short hpd pulses, we can merge the two loops into one.
Signed-off-by: NJani Nikula <jani.nikula@intel.com>
Reviewed-by: NPaulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>

drivers/gpu/drm/i915/i915_irq.c

@@ -1463,23 +1463,18 @@ static void intel_hpd_irq_handler(struct drm_device *dev,
 			 * For long HPD pulses we want to have the digital queue happen,
 			 * but we still want HPD storm detection to function.
 			 */
+			queue_dig = true;
 			if (long_hpd) {
 				dev_priv->hotplug.long_port_mask |= (1 << port);
+				/* FIXME: this can be simplified. */
 				dig_port_mask |= hpd[i];
 			} else {
 				/* for short HPD just trigger the digital queue */
 				dev_priv->hotplug.short_port_mask |= (1 << port);
-				hotplug_trigger &= ~hpd[i];
-			}
-
-			queue_dig = true;
+				continue;
 			}
 		}
 
-	for_each_hpd_pin(i) {
-		if (!(hpd[i] & hotplug_trigger))
-			continue;
-
 		if (dev_priv->hotplug.stats[i].state == HPD_DISABLED) {
 			/*
 			 * On GMCH platforms the interrupt mask bits only