USB: io_ti: sleep with spinlock held detected by automatic tool

this fixes the sleep found with the automatic tool.
Signed-off-by: NOliver Neukum <oneukum@suse.de>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

drivers/usb/serial/io_ti.c

@@ -2364,7 +2364,7 @@ static int restart_read(struct edgeport_port *edge_port)
 		urb->complete = edge_bulk_in_callback;
 		urb->context = edge_port;
 		urb->dev = edge_port->port->serial->dev;
-		status = usb_submit_urb(urb, GFP_KERNEL);
+		status = usb_submit_urb(urb, GFP_ATOMIC);
 	}
 	edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING;
 	edge_port->shadow_mcr |= MCR_RTS;