Index: sys/dev/usb/input/uhid.c
===================================================================
--- sys/dev/usb/input/uhid.c
+++ sys/dev/usb/input/uhid.c
@@ -448,10 +448,6 @@
 
 	if (kern_data == NULL) {
 		kern_data = malloc(len, M_USBDEV, M_WAITOK);
-		if (kern_data == NULL) {
-			err = ENOMEM;
-			goto done;
-		}
 		free_data = 1;
 	}
 	err = usbd_req_get_report(sc->sc_udev, NULL, kern_data,
@@ -484,10 +480,6 @@
 
 	if (kern_data == NULL) {
 		kern_data = malloc(len, M_USBDEV, M_WAITOK);
-		if (kern_data == NULL) {
-			err = ENOMEM;
-			goto done;
-		}
 		free_data = 1;
 		err = copyin(user_data, kern_data, len);
 		if (err) {
Index: sys/dev/usb/net/if_kue.c
===================================================================
--- sys/dev/usb/net/if_kue.c
+++ sys/dev/usb/net/if_kue.c
@@ -493,10 +493,6 @@
 
 	sc->sc_mcfilters = malloc(KUE_MCFILTCNT(sc) * ETHER_ADDR_LEN,
 	    M_USBDEV, M_WAITOK);
-	if (sc->sc_mcfilters == NULL) {
-		device_printf(dev, "failed allocating USB memory\n");
-		goto detach;
-	}
 
 	ue->ue_sc = sc;
 	ue->ue_dev = dev;
Index: sys/dev/usb/serial/ufoma.c
===================================================================
--- sys/dev/usb/serial/ufoma.c
+++ sys/dev/usb/serial/ufoma.c
@@ -428,9 +428,6 @@
 
 	sc->sc_modetable = malloc(elements + 1, M_USBDEV, M_WAITOK);
 
-	if (sc->sc_modetable == NULL) {
-		goto detach;
-	}
 	sc->sc_modetable[0] = (elements + 1);
 	memcpy(&sc->sc_modetable[1], mad->bMode, elements);
 
Index: sys/dev/usb/storage/ustorage_fs.c
===================================================================
--- sys/dev/usb/storage/ustorage_fs.c
+++ sys/dev/usb/storage/ustorage_fs.c
@@ -378,10 +378,6 @@
 			ustorage_fs_ramdisk =
 			    malloc(USTORAGE_FS_RAM_SECT << 9, M_USB,
 			    M_ZERO | M_WAITOK);
-
-			if (ustorage_fs_ramdisk == NULL) {
-				return (ENOMEM);
-			}
 		}
 		sc->sc_lun[0].memory_image = ustorage_fs_ramdisk;
 		sc->sc_lun[0].num_sectors = USTORAGE_FS_RAM_SECT;
Index: sys/dev/usb/usb_dev.c
===================================================================
--- sys/dev/usb/usb_dev.c
+++ sys/dev/usb/usb_dev.c
@@ -377,13 +377,11 @@
 	struct usb_fifo *f;
 
 	f = malloc(sizeof(*f), M_USBDEV, M_WAITOK | M_ZERO);
-	if (f != NULL) {
-		cv_init(&f->cv_io, "FIFO-IO");
-		cv_init(&f->cv_drain, "FIFO-DRAIN");
-		f->priv_mtx = mtx;
-		f->refcount = 1;
-		knlist_init_mtx(&f->selinfo.si_note, mtx);
-	}
+	cv_init(&f->cv_io, "FIFO-IO");
+	cv_init(&f->cv_drain, "FIFO-DRAIN");
+	f->priv_mtx = mtx;
+	f->refcount = 1;
+	knlist_init_mtx(&f->selinfo.si_note, mtx);
 	return (f);
 }
 
@@ -2312,9 +2310,6 @@
 	struct usb_symlink *ps;
 
 	ps = malloc(sizeof(*ps), M_USBDEV, M_WAITOK);
-	if (ps == NULL) {
-		return (ps);
-	}
 	/* XXX no longer needed */
 	strlcpy(ps->src_path, target, sizeof(ps->src_path));
 	ps->src_len = strlen(ps->src_path);
Index: sys/dev/usb/usb_device.c
===================================================================
--- sys/dev/usb/usb_device.c
+++ sys/dev/usb/usb_device.c
@@ -835,20 +835,12 @@
 		if (udev->ifaces_max != 0) {
 			udev->ifaces = malloc(sizeof(*iface) * udev->ifaces_max,
 			        M_USB, M_WAITOK | M_ZERO);
-			if (udev->ifaces == NULL) {
-				err = USB_ERR_NOMEM;
-				goto done;
-			}
 		}
 #endif
 #if (USB_HAVE_FIXED_ENDPOINT == 0)
 		if (ep_max != 0) {
 			udev->endpoints = malloc(sizeof(*ep) * ep_max,
 			        M_USB, M_WAITOK | M_ZERO);
-			if (udev->endpoints == NULL) {
-				err = USB_ERR_NOMEM;
-				goto done;
-			}
 		} else {
 			udev->endpoints = NULL;
 		}
@@ -1579,9 +1571,6 @@
 		return (NULL);
 	}
 	udev = malloc(sizeof(*udev), M_USB, M_WAITOK | M_ZERO);
-	if (udev == NULL) {
-		return (NULL);
-	}
 	/* initialise our SX-lock */
 	sx_init_flags(&udev->enum_sx, "USB config SX lock", SX_DUPOK);
 	sx_init_flags(&udev->sr_sx, "USB suspend and resume SX lock", SX_NOWITNESS);
Index: sys/dev/usb/usb_generic.c
===================================================================
--- sys/dev/usb/usb_generic.c
+++ sys/dev/usb/usb_generic.c
@@ -2288,11 +2288,6 @@
 		}
 		f->fs_xfer = malloc(sizeof(f->fs_xfer[0]) *
 		    u.pinit->ep_index_max, M_USB, M_WAITOK | M_ZERO);
-		if (f->fs_xfer == NULL) {
-			usb_fifo_free_buffer(f);
-			error = ENOMEM;
-			break;
-		}
 		f->fs_ep_max = u.pinit->ep_index_max;
 		f->fs_ep_ptr = u.pinit->pEndpoints;
 		break;
Index: sys/dev/usb/usb_mbuf.c
===================================================================
--- sys/dev/usb/usb_mbuf.c
+++ sys/dev/usb/usb_mbuf.c
@@ -77,9 +77,6 @@
 
 		free_ptr = malloc(alloc_size, type, M_WAITOK | M_ZERO);
 
-		if (free_ptr == NULL) {
-			goto done;
-		}
 		m_ptr = free_ptr;
 		data_ptr = (void *)(m_ptr + nblocks);
 
Index: sys/dev/usb/usb_transfer.c
===================================================================
--- sys/dev/usb/usb_transfer.c
+++ sys/dev/usb/usb_transfer.c
@@ -1239,13 +1239,6 @@
 		/* allocate zeroed memory */
 		buf = malloc(parm->size[0], M_USB, M_WAITOK | M_ZERO);
 
-		if (buf == NULL) {
-			parm->err = USB_ERR_NOMEM;
-			DPRINTFN(0, "cannot allocate memory block for "
-			    "configuration (%d bytes)\n",
-			    parm->size[0]);
-			goto done;
-		}
 		parm->dma_tag_p = USB_ADD_BYTES(buf, parm->size[1]);
 		parm->dma_page_ptr = USB_ADD_BYTES(buf, parm->size[3]);
 		parm->dma_page_cache_ptr = USB_ADD_BYTES(buf, parm->size[4]);