There should be no reason to adjust old ktermios which is going to get discarded anyway. Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@xxxxxxxxxxxxxxx> --- drivers/tty/n_tty.c | 2 +- include/linux/tty_ldisc.h | 4 ++-- 2 files changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/tty/n_tty.c b/drivers/tty/n_tty.c index 3afdd9033a9c..597019690ae6 100644 --- a/drivers/tty/n_tty.c +++ b/drivers/tty/n_tty.c @@ -1758,7 +1758,7 @@ static int n_tty_receive_buf2(struct tty_struct *tty, const unsigned char *cp, * * Locking: Caller holds @tty->termios_rwsem */ -static void n_tty_set_termios(struct tty_struct *tty, struct ktermios *old) +static void n_tty_set_termios(struct tty_struct *tty, const struct ktermios *old) { struct n_tty_data *ldata = tty->disc_data; diff --git a/include/linux/tty_ldisc.h b/include/linux/tty_ldisc.h index ede6f2157f32..dcb61ec11424 100644 --- a/include/linux/tty_ldisc.h +++ b/include/linux/tty_ldisc.h @@ -130,7 +130,7 @@ int ldsem_down_write_nested(struct ld_semaphore *sem, int subclass, * a pointer to wordsize-sensitive structure belongs here, but most of * ldiscs will happily leave it %NULL. * - * @set_termios: [TTY] ``void ()(struct tty_struct *tty, struct ktermios *old)`` + * @set_termios: [TTY] ``void ()(struct tty_struct *tty, const struct ktermios *old)`` * * This function notifies the line discpline that a change has been made * to the termios structure. @@ -227,7 +227,7 @@ struct tty_ldisc_ops { unsigned long arg); int (*compat_ioctl)(struct tty_struct *tty, unsigned int cmd, unsigned long arg); - void (*set_termios)(struct tty_struct *tty, struct ktermios *old); + void (*set_termios)(struct tty_struct *tty, const struct ktermios *old); __poll_t (*poll)(struct tty_struct *tty, struct file *file, struct poll_table_struct *wait); void (*hangup)(struct tty_struct *tty); -- 2.30.2