usb_hcd_submit_urb  570 drivers/usb/core/urb.c 	return usb_hcd_submit_urb(urb, mem_flags);
usb_hcd_submit_urb  436 include/linux/usb/hcd.h extern int usb_hcd_submit_urb(struct urb *urb, gfp_t mem_flags);