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net, TTY: initialize tty->driver_data before usage

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Commit 9c650ffc ("TTY: ircomm_tty, add tty install") split _open() to
_install() and _open(). It also moved the initialization of driver_data
out of open(), but never added it to install() - causing a NULL ptr
deref whenever the driver was used.

Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
Acked-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Sasha Levin 2012-10-04 20:01:21 -04:00 committed by Greg Kroah-Hartman
parent ecefbd94b8
commit 6f5601251d
1 changed files with 2 additions and 0 deletions
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net/irda/ircomm/ircomm_tty.c
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@ -421,6 +421,8 @@ static int ircomm_tty_install(struct tty_driver *driver, struct tty_struct *tty)
hashbin_insert(ircomm_tty, (irda_queue_t *) self, line, NULL);
}
tty->driver_data = self;
return tty_port_install(&self->port, driver, tty);
}