Commit 8bde9658 authored by Johan Hovold's avatar Johan Hovold Committed by Greg Kroah-Hartman
Browse files

TTY: clean up port shutdown 



Untangle port-shutdown logic and make sure the initialised flag is
always cleared for non-console ports.

Signed-off-by: default avatarJohan Hovold <jhovold@gmail.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent b12d8dc2

drivers/tty/tty_port.c

+7 −2
Original line number Diff line number Diff line
@@ -199,9 +199,14 @@ EXPORT_SYMBOL(tty_port_tty_set); 
static void tty_port_shutdown(struct tty_port *port)

{

	mutex_lock(&port->mutex);

	if (port->ops->shutdown && !port->console &&

		test_and_clear_bit(ASYNCB_INITIALIZED, &port->flags))

	if (port->console)

		goto out;



	if (test_and_clear_bit(ASYNCB_INITIALIZED, &port->flags)) {

		if (port->ops->shutdown)

			port->ops->shutdown(port);

	}

out:

	mutex_unlock(&port->mutex);

}