On Wed, 4 Oct 2023, Tony Lindgren wrote: > * Ilpo Järvinen <ilpo.jarvinen@xxxxxxxxxxxxxxx> [231004 09:05]: > > On Wed, 4 Oct 2023, Tony Lindgren wrote: > > > > > Let's not allow negative numbers for console index. > > > > > > Signed-off-by: Tony Lindgren <tony@xxxxxxxxxxx> > > > --- > > > drivers/tty/serial/8250/8250_core.c | 2 +- > > > 1 file changed, 1 insertion(+), 1 deletion(-) > > > > > > diff --git a/drivers/tty/serial/8250/8250_core.c b/drivers/tty/serial/8250/8250_core.c > > > --- a/drivers/tty/serial/8250/8250_core.c > > > +++ b/drivers/tty/serial/8250/8250_core.c > > > @@ -611,7 +611,7 @@ static int univ8250_console_setup(struct console *co, char *options) > > > * if so, search for the first available port that does have > > > * console support. > > > */ > > > - if (co->index >= UART_NR) > > > + if (co->index < 0 || co->index >= UART_NR) > > > co->index = 0; > > > > The inconsistencies how different serial drivers handle this situation > > seem staggering. Perhaps there should be some effort to make the behavior > > uniform across them? > > Hmm yeah we should just have them all check for co->index < 0. Right but it's only about that, some return -Exx codes (more than one -Exx variant) and some do assign just 0 like here. -- i.
