android/android_kernel_xiaomi_sm8450
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caif: tty's are kref objects so take a reference

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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>
This commit is contained in:
Alan Cox
2010-04-07 16:50:00 -07:00
committed by David S. Miller
parent c93f094021
commit e31d5a0594
1 changed files with 2 additions and 1 deletions
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3
drivers/net/caif/caif_serial.c
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@ -319,7 +319,7 @@ static int ldisc_open(struct tty_struct *tty)
sprintf(name, "cf%s", tty->name); sprintf(name, "cf%s", tty->name);
dev = alloc_netdev(sizeof(*ser), name, caifdev_setup); dev = alloc_netdev(sizeof(*ser), name, caifdev_setup);
ser = netdev_priv(dev); ser = netdev_priv(dev);
ser->tty = tty; ser->tty = tty_kref_get(tty);
ser->dev = dev; ser->dev = dev;
debugfs_init(ser, tty); debugfs_init(ser, tty);
tty->receive_room = N_TTY_BUF_SIZE; tty->receive_room = N_TTY_BUF_SIZE;
@ -352,6 +352,7 @@ static void ldisc_close(struct tty_struct *tty)
unregister_netdevice(ser->dev); unregister_netdevice(ser->dev);
list_del(&ser->node); list_del(&ser->node);
debugfs_deinit(ser); debugfs_deinit(ser);
tty_kref_put(ser->tty);
if (!islocked) if (!islocked)
rtnl_unlock(); rtnl_unlock();
} }