91177d53a3
The dgap_init_one() needs to handle error properly if one of functions in dgap_init_one() is failed. Introduce some functions for handling error in dgap_init_one() - dgap_tty_unregister() : unregister tty driver - dgap_free_flipbuf() : free flip buffer - dgap_release_remap() : release memory region and unmapped memory. Signed-off-by: Daeseok Youn <daeseok.youn@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>