Index: head/sys/arm/nvidia/tegra_ehci.c
===================================================================
--- head/sys/arm/nvidia/tegra_ehci.c
+++ head/sys/arm/nvidia/tegra_ehci.c
@@ -253,8 +253,8 @@
 	}
 
 	/* Setup interrupt handler. */
-	rv = bus_setup_intr(dev, sc->ehci_irq_res, INTR_TYPE_BIO, NULL,
-	    (driver_intr_t *)ehci_interrupt, esc, &esc->sc_intr_hdl);
+	rv = bus_setup_intr(dev, sc->ehci_irq_res, INTR_TYPE_BIO | INTR_MPSAFE,
+	    NULL, (driver_intr_t *)ehci_interrupt, esc, &esc->sc_intr_hdl);
 	if (rv != 0) {
 		device_printf(dev, "Could not setup IRQ\n");
 		goto out;
Index: head/sys/dev/usb/controller/ehci_fsl.c
===================================================================
--- head/sys/dev/usb/controller/ehci_fsl.c
+++ head/sys/dev/usb/controller/ehci_fsl.c
@@ -294,7 +294,7 @@
 	}
 
 	/* Setup interrupt handler */
-	err = bus_setup_intr(self, sc->sc_irq_res, INTR_TYPE_BIO,
+	err = bus_setup_intr(self, sc->sc_irq_res, INTR_TYPE_BIO | INTR_MPSAFE,
 	    NULL, (driver_intr_t *)ehci_interrupt, sc, &sc->sc_intr_hdl);
 	if (err) {
 		device_printf(self, "Could not setup irq, %d\n", err);
Index: head/sys/dev/usb/controller/ehci_imx.c
===================================================================
--- head/sys/dev/usb/controller/ehci_imx.c
+++ head/sys/dev/usb/controller/ehci_imx.c
@@ -261,8 +261,8 @@
 	}
 
 	/* Setup interrupt handler. */
-	err = bus_setup_intr(dev, sc->ehci_irq_res, INTR_TYPE_BIO, NULL, 
-	    (driver_intr_t *)ehci_interrupt, esc, &esc->sc_intr_hdl);
+	err = bus_setup_intr(dev, sc->ehci_irq_res, INTR_TYPE_BIO | INTR_MPSAFE,
+	    NULL, (driver_intr_t *)ehci_interrupt, esc, &esc->sc_intr_hdl);
 	if (err != 0) {
 		device_printf(dev, "Could not setup IRQ\n");
 		goto out;