Commit 4040c828 authored by Jiri Slaby's avatar Jiri Slaby Committed by Greg Kroah-Hartman
Browse files

n_hdlc: remove unused backup_tty 



It's only set to NULL and never properly used.

Signed-off-by: default avatarJiri Slaby <jslaby@suse.cz>
Link: https://lore.kernel.org/r/20200219084118.26491-10-jslaby@suse.cz


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent a1274b26

drivers/tty/n_hdlc.c

+1 −9
Original line number Diff line number Diff line
@@ -125,7 +125,6 @@ struct n_hdlc_buf_list { 
 * struct n_hdlc - per device instance data structure

 * @magic - magic value for structure

 * @tty - ptr to TTY structure

 * @backup_tty - TTY to use if tty gets closed

 * @tbusy - reentrancy flag for tx wakeup code

 * @woke_up - FIXME: describe this field

 * @tx_buf_list - list of pending transmit frame buffers
@@ -136,7 +135,6 @@ struct n_hdlc_buf_list { 
struct n_hdlc {

	int			magic;

	struct tty_struct	*tty;

	struct tty_struct	*backup_tty;

	int			tbusy;

	int			woke_up;

	struct n_hdlc_buf_list	tx_buf_list;
@@ -267,15 +265,9 @@ static void n_hdlc_tty_close(struct tty_struct *tty) 
	clear_bit(TTY_NO_WRITE_SPLIT,&tty->flags);

#endif

	tty->disc_data = NULL;

	if (tty == n_hdlc->backup_tty)

		n_hdlc->backup_tty = NULL;

	if (tty != n_hdlc->tty)

		return;

	if (n_hdlc->backup_tty) {

		n_hdlc->tty = n_hdlc->backup_tty;

	} else {

	n_hdlc_release (n_hdlc);

	}

}	/* end of n_hdlc_tty_close() */



/**