TTY: introduce tty_port_destroy
authorJiri Slaby <jslaby@suse.cz>
Thu, 15 Nov 2012 08:49:54 +0000 (09:49 +0100)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Fri, 16 Nov 2012 01:20:58 +0000 (17:20 -0800)
commitde274bfe0fc81def6ddb8a17020a9a4b56477cc4
treefb2aeacdb9fc1e94b5aa13beb6a4818c043b43d3
parent9a8e62bc68832dc55a5e6868f812b65567fe66b5
TTY: introduce tty_port_destroy

After commit "TTY: move tty buffers to tty_port", the tty buffers are
not freed in some drivers. This is because tty_port_destructor is not
called whenever a tty_port is freed. This was an assumption I counted
with but was unfortunately untrue.

Those using refcounting are safe now, but for those which do not we
introduce a function to be called right before the tty_port is freed
by the drivers.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/tty/tty_port.c
include/linux/tty.h