xhci: Add missing checks for xhci_alloc_command failure

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/host/xhci-ring.c

@@ -1118,6 +1118,10 @@ static void xhci_handle_cmd_reset_ep(struct xhci_hcd *xhci, int slot_id,
 	if (xhci->quirks & XHCI_RESET_EP_QUIRK) {
 		struct xhci_command *command;
 		command = xhci_alloc_command(xhci, false, false, GFP_ATOMIC);
+		if (!command) {
+			xhci_warn(xhci, "WARN Cannot submit cfg ep: ENOMEM\n");
+			return;
+		}
 		xhci_dbg_trace(xhci, trace_xhci_dbg_quirks,
 				"Queueing configure endpoint command");
 		xhci_queue_configure_endpoint(xhci, command,

drivers/usb/host/xhci.c

@@ -1553,6 +1553,10 @@ int xhci_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status)
 	 */
 	if (!(ep->ep_state & EP_HALT_PENDING)) {
 		command = xhci_alloc_command(xhci, false, false, GFP_ATOMIC);
+		if (!command) {
+			ret = -ENOMEM;
+			goto done;
+		}
 		ep->ep_state |= EP_HALT_PENDING;
 		ep->stop_cmds_pending++;
 		ep->stop_cmd_timer.expires = jiffies +