diff --git a/drivers/usb/host/ehci-fsl.c b/drivers/usb/host/ehci-fsl.c
index b7b7bfb..430821cb 100644
--- a/drivers/usb/host/ehci-fsl.c
+++ b/drivers/usb/host/ehci-fsl.c
@@ -122,7 +122,7 @@
 	temp = in_le32(hcd->regs + 0x1a8);
 	out_le32(hcd->regs + 0x1a8, temp | 0x3);
 
-	retval = usb_add_hcd(hcd, irq, IRQF_SHARED);
+	retval = usb_add_hcd(hcd, irq, IRQF_DISABLED | IRQF_SHARED);
 	if (retval != 0)
 		goto err4;
 	return retval;
diff --git a/drivers/usb/host/ohci-ppc-of.c b/drivers/usb/host/ohci-ppc-of.c
index 0a74269..0c3e6b7 100644
--- a/drivers/usb/host/ohci-ppc-of.c
+++ b/drivers/usb/host/ohci-ppc-of.c
@@ -142,7 +142,7 @@
 
 	ohci_hcd_init(ohci);
 
-	rv = usb_add_hcd(hcd, irq, 0);
+	rv = usb_add_hcd(hcd, irq, IRQF_DISABLED);
 	if (rv == 0)
 		return 0;
 
diff --git a/drivers/usb/host/ohci-ssb.c b/drivers/usb/host/ohci-ssb.c
index fe70e72..6e9c2d6 100644
--- a/drivers/usb/host/ohci-ssb.c
+++ b/drivers/usb/host/ohci-ssb.c
@@ -160,7 +160,7 @@
 	hcd->regs = ioremap_nocache(hcd->rsrc_start, hcd->rsrc_len);
 	if (!hcd->regs)
 		goto err_put_hcd;
-	err = usb_add_hcd(hcd, dev->irq, IRQF_SHARED);
+	err = usb_add_hcd(hcd, dev->irq, IRQF_DISABLED | IRQF_SHARED);
 	if (err)
 		goto err_iounmap;
 
diff --git a/drivers/usb/host/r8a66597-hcd.c b/drivers/usb/host/r8a66597-hcd.c
index ae8ec44..0ce2fc5 100644
--- a/drivers/usb/host/r8a66597-hcd.c
+++ b/drivers/usb/host/r8a66597-hcd.c
@@ -2197,7 +2197,7 @@
 	INIT_LIST_HEAD(&r8a66597->child_device);
 
 	hcd->rsrc_start = res->start;
-	ret = usb_add_hcd(hcd, irq, 0);
+	ret = usb_add_hcd(hcd, irq, IRQF_DISABLED);
 	if (ret != 0) {
 		err("Failed to add hcd");
 		goto clean_up;
diff --git a/drivers/usb/host/uhci-hcd.c b/drivers/usb/host/uhci-hcd.c
index 4db17f7..ec98789 100644
--- a/drivers/usb/host/uhci-hcd.c
+++ b/drivers/usb/host/uhci-hcd.c
@@ -378,7 +378,6 @@
 {
 	struct uhci_hcd *uhci = hcd_to_uhci(hcd);
 	unsigned short status;
-	unsigned long flags;
 
 	/*
 	 * Read the interrupt status, and write it back to clear the
@@ -398,7 +397,7 @@
 			dev_err(uhci_dev(uhci), "host controller process "
 					"error, something bad happened!\n");
 		if (status & USBSTS_HCH) {
-			spin_lock_irqsave(&uhci->lock, flags);
+			spin_lock(&uhci->lock);
 			if (uhci->rh_state >= UHCI_RH_RUNNING) {
 				dev_err(uhci_dev(uhci),
 					"host controller halted, "
@@ -415,16 +414,16 @@
 				 * pending unlinks */
 				mod_timer(&hcd->rh_timer, jiffies);
 			}
-			spin_unlock_irqrestore(&uhci->lock, flags);
+			spin_unlock(&uhci->lock);
 		}
 	}
 
 	if (status & USBSTS_RD)
 		usb_hcd_poll_rh_status(hcd);
 	else {
-		spin_lock_irqsave(&uhci->lock, flags);
+		spin_lock(&uhci->lock);
 		uhci_scan_schedule(uhci);
-		spin_unlock_irqrestore(&uhci->lock, flags);
+		spin_unlock(&uhci->lock);
 	}
 
 	return IRQ_HANDLED;