On Sat, Jun 27, 2020 at 02:54:17PM +0200, Oscar Carter wrote: > In an effort to enable -Wcast-function-type in the top-level Makefile to > support Control Flow Integrity builds, remove all the function callback > casts. > > To do this modify the function prototypes accordingly. > > Signed-off-by: Oscar Carter <oscar.carter@xxxxxxx> Oh yes, the tasklets! I'd love to see this fixed correctly. (Which is to say, modernize the API.) Romain hasn't had time to continue the work: https://lore.kernel.org/kernel-hardening/20190929163028.9665-1-romain.perier@xxxxxxxxx/ Is this something you'd want to tackle? > --- > drivers/s390/char/tty3270.c | 12 ++++++------ > 1 file changed, 6 insertions(+), 6 deletions(-) > > diff --git a/drivers/s390/char/tty3270.c b/drivers/s390/char/tty3270.c > index 98d7fc152e32..aec996de44d9 100644 > --- a/drivers/s390/char/tty3270.c > +++ b/drivers/s390/char/tty3270.c > @@ -556,8 +556,9 @@ tty3270_scroll_backward(struct kbd_data *kbd) > * Pass input line to tty. > */ > static void > -tty3270_read_tasklet(struct raw3270_request *rrq) > +tty3270_read_tasklet(unsigned long data) > { > + struct raw3270_request *rrq = (struct raw3270_request *)data; Regardless, this is correct as far as fixing the prototype. Reviewed-by: Kees Cook <keescook@xxxxxxxxxxxx> -- Kees Cook