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authorAlan Cox <alan@linux.intel.com>2010-04-08 03:50:00 +0400
committerDavid S. Miller <davem@davemloft.net>2010-04-08 03:50:00 +0400
commite31d5a05948e4478ba8396063d1e1f39880928e2 (patch)
treec164c122d3b6500b40ea9a695009215714d23ae2 /drivers/net/caif
parentc93f09402106f22601838ee2bb0d02bae934b5e5 (diff)
downloadlinux-e31d5a05948e4478ba8396063d1e1f39880928e2.tar.xz
caif: tty's are kref objects so take a reference
I don't think this can be abused in this case but do things properly. Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/caif')
-rw-r--r--drivers/net/caif/caif_serial.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/net/caif/caif_serial.c b/drivers/net/caif/caif_serial.c
index c669ec37483b..38c0186cfbc2 100644
--- a/drivers/net/caif/caif_serial.c
+++ b/drivers/net/caif/caif_serial.c
@@ -319,7 +319,7 @@ static int ldisc_open(struct tty_struct *tty)
sprintf(name, "cf%s", tty->name);
dev = alloc_netdev(sizeof(*ser), name, caifdev_setup);
ser = netdev_priv(dev);
- ser->tty = tty;
+ ser->tty = tty_kref_get(tty);
ser->dev = dev;
debugfs_init(ser, tty);
tty->receive_room = N_TTY_BUF_SIZE;
@@ -352,6 +352,7 @@ static void ldisc_close(struct tty_struct *tty)
unregister_netdevice(ser->dev);
list_del(&ser->node);
debugfs_deinit(ser);
+ tty_kref_put(ser->tty);
if (!islocked)
rtnl_unlock();
}