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Commit 7b0c6b38 authored by Johan Hovold's avatar Johan Hovold
Browse files

tty: add missing const to termios hw-change helper 



Add missing const qualifiers to the parameters of the termios hw-change
helper, which is used by a few USB serial drivers. This specifically
allows the pl2303 driver to use const arguments in one of its helper as
well.

Cc: Jiri Slaby <jslaby@suse.com>
Acked-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: default avatarJohan Hovold <johan@kernel.org>
parent df1cd63d

drivers/tty/tty_ioctl.c

+1 −1
Original line number Diff line number Diff line
@@ -290,7 +290,7 @@ EXPORT_SYMBOL(tty_termios_copy_hw); 
 *	between the two termios structures, or a speed change is needed.

 */



int tty_termios_hw_change(struct ktermios *a, struct ktermios *b)

int tty_termios_hw_change(const struct ktermios *a, const struct ktermios *b)

{

	if (a->c_ispeed != b->c_ispeed || a->c_ospeed != b->c_ospeed)

		return 1;

include/linux/tty.h

+1 −1
Original line number Diff line number Diff line
@@ -527,7 +527,7 @@ static inline speed_t tty_get_baud_rate(struct tty_struct *tty) 
}



extern void tty_termios_copy_hw(struct ktermios *new, struct ktermios *old);

extern int tty_termios_hw_change(struct ktermios *a, struct ktermios *b);

extern int tty_termios_hw_change(const struct ktermios *a, const struct ktermios *b);

extern int tty_set_termios(struct tty_struct *tty, struct ktermios *kt);



extern struct tty_ldisc *tty_ldisc_ref(struct tty_struct *);