On Wed, Dec 08, 2021 at 03:47:41AM +0530, Vihas Mak wrote: > when a user with CAP_SYS_ADMIN disabled calls ioctl (TIOCSSERIAL), > uart_set_info() returns 0 instead of -EPERM and the user remains unware > about what went wrong. Fix this. > > Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=215205 > > Signed-off-by: Vihas Mak <makvihas@xxxxxxxxx> > --- > drivers/tty/serial/serial_core.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c > index 61e3dd022..c204bdecc 100644 > --- a/drivers/tty/serial/serial_core.c > +++ b/drivers/tty/serial/serial_core.c > @@ -960,7 +960,7 @@ static int uart_set_info(struct tty_struct *tty, struct tty_port *port, > uport->fifosize = new_info->xmit_fifo_size; > > check_and_exit: > - retval = 0; > + retval = retval < 0 ? retval : 0; Please no, do not use ? : unless you have to. Spell it out and use a real if statement. thanks, greg k-h
