One more spinlock initializer cleanup.
diff --git a/shared-core/i915_irq.c b/shared-core/i915_irq.c
index dc00f98..2f6a6b9 100644
--- a/shared-core/i915_irq.c
+++ b/shared-core/i915_irq.c
@@ -719,7 +719,7 @@
 	INIT_LIST_HEAD(&dev_priv->vbl_swaps.head);
 	dev_priv->swaps_pending = 0;
 
-	dev_priv->user_irq_lock = SPIN_LOCK_UNLOCKED;
+	spin_lock_init(&dev_priv->user_irq_lock);
 	dev_priv->user_irq_refcount = 0;
 
 	i915_enable_interrupt(dev);