On Thu, Aug 10, 2023 at 11:15:01AM +0200, Jiri Slaby (SUSE) wrote: Hi Jiri, > Data are now typed as u8. Propagate this change to > tty_operations::write(). ... > drivers/s390/char/con3215.c | 3 +-- > drivers/s390/char/con3270.c | 3 +-- > drivers/s390/char/sclp_tty.c | 2 +- > drivers/s390/char/sclp_vt220.c | 2 +- ... > diff --git a/drivers/s390/char/con3215.c b/drivers/s390/char/con3215.c > index a1fef666c9b0..16b6f430dfd3 100644 > --- a/drivers/s390/char/con3215.c > +++ b/drivers/s390/char/con3215.c > @@ -1021,8 +1021,7 @@ static unsigned int tty3215_write_room(struct tty_struct *tty) > /* > * String write routine for 3215 ttys > */ > -static int tty3215_write(struct tty_struct *tty, > - const unsigned char *buf, int count) > +static int tty3215_write(struct tty_struct *tty, const u8 *buf, int count) > { > handle_write(tty->driver_data, buf, count); > return count; > diff --git a/drivers/s390/char/con3270.c b/drivers/s390/char/con3270.c > index d9983550062d..123524bff734 100644 > --- a/drivers/s390/char/con3270.c > +++ b/drivers/s390/char/con3270.c > @@ -1803,8 +1803,7 @@ static void tty3270_do_write(struct tty3270 *tp, struct tty_struct *tty, > /* > * String write routine for 3270 ttys > */ > -static int tty3270_write(struct tty_struct *tty, > - const unsigned char *buf, int count) > +static int tty3270_write(struct tty_struct *tty, const u8 *buf, int count) > { > struct tty3270 *tp; > > diff --git a/drivers/s390/char/sclp_tty.c b/drivers/s390/char/sclp_tty.c > index 971fbb52740b..cc0f6a97124e 100644 > --- a/drivers/s390/char/sclp_tty.c > +++ b/drivers/s390/char/sclp_tty.c > @@ -230,7 +230,7 @@ static int sclp_tty_write_string(const unsigned char *str, int count, int may_fa > * routine will return the number of characters actually accepted for writing. > */ > static int > -sclp_tty_write(struct tty_struct *tty, const unsigned char *buf, int count) > +sclp_tty_write(struct tty_struct *tty, const u8 *buf, int count) > { > if (sclp_tty_chars_count > 0) { > sclp_tty_write_string(sclp_tty_chars, sclp_tty_chars_count, 0); > diff --git a/drivers/s390/char/sclp_vt220.c b/drivers/s390/char/sclp_vt220.c > index a32f34a1c6d2..44974d801c1e 100644 > --- a/drivers/s390/char/sclp_vt220.c > +++ b/drivers/s390/char/sclp_vt220.c > @@ -463,7 +463,7 @@ __sclp_vt220_write(const unsigned char *buf, int count, int do_schedule, > * number of characters actually accepted for writing. > */ > static int > -sclp_vt220_write(struct tty_struct *tty, const unsigned char *buf, int count) > +sclp_vt220_write(struct tty_struct *tty, const u8 *buf, int count) > { > return __sclp_vt220_write(buf, count, 1, 0, 1); > } ... In this and following patch it is only ::write() (and other) callbacks switched to u8, while the called internal functions stay with old types. Do you plan to follow with part II etc, or it is archs/drivers that are expected to sort it out eventually? (I speak for s390, but the other affected archs are in the same boat I guess). Thanks!