/* Push data to tty layer and resubmit the bulk read URB */
static void flush_and_resubmit_read_urb(struct usb_serial_port *port)
{
struct urb *urb = port->read_urb;
struct tty_struct *tty = port->port.tty;
int room;
/* Push data to tty */
if (tty && urb->actual_length) {
room = tty_buffer_request_room(tty, urb->actual_length);
if (room) {
tty_insert_flip_string(tty, urb->transfer_buffer, room);
tty_flip_buffer_push(tty);
}
}
resubmit_read_urb(port, GFP_ATOMIC);
}
void usb_serial_generic_unthrottle (struct usb_serial_port *port)
{
int was_throttled;
unsigned long flags;
dbg("%s - port %d", __FUNCTION__, port->number);
/* Clear the throttle flags */
spin_lock_irqsave(&port->lock, flags);
was_throttled = port->throttled;
port->throttled = port->throttle_req = 0;
spin_unlock_irqrestore(&port->lock, flags);
if (was_throttled) {
/* Resume reading from device */
resubmit_read_urb(port, GFP_KERNEL);
}
}
