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authorAlan Cox <alan@redhat.com>2008-10-30 11:54:12 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2008-10-30 15:09:07 -0400
commitfce4877a6792ad72b88f6fd7556d19da5f20364d (patch)
treecc272f4b863ebfb6595974feca28168cb59fc367 /drivers/usb
parent0fb7f4f0cef8e7d2944189ff2cb68694ef4b683a (diff)
tty: Fix USB kref leak
When we close we must clear the extra reference we got when we read port->tty. Setting the port tty NULL will clear the kref held by the driver but not the one we obtained ourselves while doing the lookup. Signed-off-by: Alan Cox <alan@redhat.com> Tested-by: Helge Hafting <helge.hafting@aitel.hist.no> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/usb')
-rw-r--r--drivers/usb/serial/usb-serial.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/usb/serial/usb-serial.c b/drivers/usb/serial/usb-serial.c
index 8be3f39891c7..794b5ffe4397 100644
--- a/drivers/usb/serial/usb-serial.c
+++ b/drivers/usb/serial/usb-serial.c
@@ -281,6 +281,7 @@ static void serial_close(struct tty_struct *tty, struct file *filp)
281 if (tty->driver_data) 281 if (tty->driver_data)
282 tty->driver_data = NULL; 282 tty->driver_data = NULL;
283 tty_port_tty_set(&port->port, NULL); 283 tty_port_tty_set(&port->port, NULL);
284 tty_kref_put(tty);
284 } 285 }
285 } 286 }
286 287