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Commit 4c6d5b4d authored by Geert Uytterhoeven's avatar Geert Uytterhoeven Committed by Greg Kroah-Hartman
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serial_core: Get a reference for port->tty in uart_remove_one_port() 



Suggested-by: default avatarPeter Hurley <peter@hurleysoftware.com>
Signed-off-by: default avatarGeert Uytterhoeven <geert+renesas@linux-m68k.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 63e3ad32

drivers/tty/serial/serial_core.c

+5 −1
Original line number Diff line number Diff line
@@ -2645,6 +2645,7 @@ int uart_remove_one_port(struct uart_driver *drv, struct uart_port *uport) 
{

	struct uart_state *state = drv->state + uport->line;

	struct tty_port *port = &state->port;

	struct tty_struct *tty;

	int ret = 0;



	BUG_ON(in_interrupt());
@@ -2673,8 +2674,11 @@ int uart_remove_one_port(struct uart_driver *drv, struct uart_port *uport) 
	 */

	tty_unregister_device(drv->tty_driver, uport->line);



	if (port->tty)

	tty = tty_port_tty_get(port);

	if (tty) {

		tty_vhangup(port->tty);

		tty_kref_put(tty);

	}



	/*

	 * If the port is used as a console, unregister it