diff --git a/drivers/block/xen-blkfront.c b/drivers/block/xen-blkfront.c
index 9fd3ee2..4276ab0 100644
--- a/drivers/block/xen-blkfront.c
+++ b/drivers/block/xen-blkfront.c
@@ -1452,6 +1452,9 @@
 	if (!xen_domain())
 		return -ENODEV;
 
+	if (!xen_platform_pci_unplug)
+		return -ENODEV;
+
 	if (register_blkdev(XENVBD_MAJOR, DEV_NAME)) {
 		printk(KERN_WARNING "xen_blk: can't get major %d with name %s\n",
 		       XENVBD_MAJOR, DEV_NAME);
diff --git a/drivers/net/xen-netfront.c b/drivers/net/xen-netfront.c
index fa67905..8cc0914 100644
--- a/drivers/net/xen-netfront.c
+++ b/drivers/net/xen-netfront.c
@@ -47,6 +47,7 @@
 #include <xen/xenbus.h>
 #include <xen/events.h>
 #include <xen/page.h>
+#include <xen/platform_pci.h>
 #include <xen/grant_table.h>
 
 #include <xen/interface/io/netif.h>
@@ -1956,6 +1957,9 @@
 	if (xen_initial_domain())
 		return 0;
 
+	if (!xen_platform_pci_unplug)
+		return -ENODEV;
+
 	printk(KERN_INFO "Initialising Xen virtual ethernet driver.\n");
 
 	return xenbus_register_frontend(&netfront_driver);
diff --git a/drivers/xen/platform-pci.c b/drivers/xen/platform-pci.c
index 319dd0a..2389e58 100644
--- a/drivers/xen/platform-pci.c
+++ b/drivers/xen/platform-pci.c
@@ -186,11 +186,6 @@
 
 static int __init platform_pci_module_init(void)
 {
-	/* no unplug has been done, IGNORE hasn't been specified: just
-	 * return now */
-	if (!xen_platform_pci_unplug)
-		return -ENODEV;
-
 	return pci_register_driver(&platform_driver);
 }