USB: serial: refactor read urb submission in generic driver

Use the already exported function for submitting the read urb associated
with a usb_serial_port.

Make sure it returns the result of usb_submit_urb and rename to the
more descriptive usb_serial_generic_submit_read_urb.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/usb/serial/usb_debug.c b/drivers/usb/serial/usb_debug.c
index 28026b4..63c2734 100644
--- a/drivers/usb/serial/usb_debug.c
+++ b/drivers/usb/serial/usb_debug.c
@@ -69,7 +69,7 @@
 	    memcmp(urb->transfer_buffer, USB_DEBUG_BRK,
 		   USB_DEBUG_BRK_SIZE) == 0) {
 		usb_serial_handle_break(port);
-		usb_serial_generic_resubmit_read_urb(port, GFP_ATOMIC);
+		usb_serial_generic_submit_read_urb(port, GFP_ATOMIC);
 		return;
 	}