diff --git a/drivers/misc/phantom.c b/drivers/misc/phantom.c
index 5108b7c5..6e61a79 100644
--- a/drivers/misc/phantom.c
+++ b/drivers/misc/phantom.c
@@ -378,6 +378,8 @@
 	iowrite32(0, dev->caddr + PHN_IRQCTL);
 	ioread32(dev->caddr + PHN_IRQCTL); /* PCI posting */
 
+	synchronize_irq(pdev->irq);
+
 	return 0;
 }