usb_serial_generic_submit_read_urb 331 drivers/usb/serial/generic.c res = usb_serial_generic_submit_read_urb(port, i, mem_flags); usb_serial_generic_submit_read_urb 430 drivers/usb/serial/generic.c usb_serial_generic_submit_read_urb(port, i, GFP_ATOMIC);