From mboxrd@z Thu Jan 1 00:00:00 1970 From: Geert Uytterhoeven Subject: [PATCH 1/2] serial_core: Get a reference for port->tty in uart_remove_one_port() Date: Mon, 17 Mar 2014 14:10:58 +0100 Message-ID: <1395061859-15295-1-git-send-email-geert@linux-m68k.org> Return-path: Sender: linux-kernel-owner@vger.kernel.org To: Greg Kroah-Hartman , Jiri Slaby , Peter Hurley Cc: linux-serial@vger.kernel.org, linux-kernel@vger.kernel.org, Geert Uytterhoeven List-Id: linux-serial@vger.kernel.org From: Geert Uytterhoeven Suggested-by: Peter Hurley Signed-off-by: Geert Uytterhoeven --- drivers/tty/serial/serial_core.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c index 8ee90f731f31..21084f0b8ea4 100644 --- a/drivers/tty/serial/serial_core.c +++ b/drivers/tty/serial/serial_core.c @@ -2647,6 +2647,7 @@ 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()); @@ -2675,8 +2676,11 @@ 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, and power it down -- 1.7.9.5