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authorGeert Uytterhoeven <geert+renesas@linux-m68k.org>2014-03-17 17:10:58 +0400
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2014-03-18 03:16:59 +0400
commit4c6d5b4d537fbdfa310295e7071c85b07783d245 (patch)
treed17076585759c5ba0a4d2f42cdc0f9f4c2588244 /drivers/tty
parent63e3ad3252695a2b8c01b6f6c225e4537af08b85 (diff)
downloadlinux-4c6d5b4d537fbdfa310295e7071c85b07783d245.tar.xz
serial_core: Get a reference for port->tty in uart_remove_one_port()
Suggested-by: Peter Hurley <peter@hurleysoftware.com> Signed-off-by: Geert Uytterhoeven <geert+renesas@linux-m68k.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty')
-rw-r--r--drivers/tty/serial/serial_core.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c
index 203cb32638c3..3253905428ea 100644
--- a/drivers/tty/serial/serial_core.c
+++ b/drivers/tty/serial/serial_core.c
@@ -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