Fix (hopefully) for DWC_MEMCPY kernel panics. Thanks to Naren Sankar for finding this

Author: popcornmix

drivers/usb/host/dwc_otg/dwc_otg_hcd.c

@@ -909,6 +909,10 @@ static void assign_and_init_hc(dwc_otg_hcd_t * hcd, dwc_otg_qh_t * qh)
 		return 0;
 #endif
 
+	if (((urb->actual_length < 0) || (urb->actual_length > urb->length)) && !dwc_otg_hcd_is_pipe_in(&urb->pipe_info))
+		urb->actual_length = urb->length;
+
+
 	hc = DWC_CIRCLEQ_FIRST(&hcd->free_hc_list);
 
 	/* Remove the host channel from the free list. */

drivers/usb/host/dwc_otg/dwc_otg_hcd_linux.c

@@ -668,6 +668,9 @@ static int urb_enqueue(struct usb_hcd *hcd,
 					    urb->number_of_packets,
 					    mem_flags == GFP_ATOMIC ? 1 : 0);
 
+	if(dwc_otg_urb == NULL)
+		return -ENOMEM;
+
         urb->hcpriv = dwc_otg_urb;
 
 	dwc_otg_hcd_urb_set_pipeinfo(dwc_otg_urb, usb_pipedevice(urb->pipe),