Jiri Slaby de274bfe0f
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 >
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