* Jiri Slaby <jirislaby@xxxxxxxxxx> [230602 06:48]:
> On 02. 06. 23, 8:46, Tony Lindgren wrote:
> > * Tony Lindgren <tony@xxxxxxxxxxx> [230602 06:41]:
> > > Checking for NULL is not enough as serial_base_ctrl_add() uses ERR_PTR().
> > >
> > > Fixes: 84a9582fd203 ("serial: core: Start managing serial controllers to enable runtime PM")
> > > Signed-off-by: Tony Lindgren <tony@xxxxxxxxxxx>
> > > ---
> > > 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
> > > --- a/drivers/tty/serial/serial_core.c
> > > +++ b/drivers/tty/serial/serial_core.c
> > > @@ -3342,7 +3342,7 @@ int serial_core_register_port(struct uart_driver *drv, struct uart_port *port)
> > > ctrl_dev = serial_core_ctrl_find(drv, port->dev, port->ctrl_id);
> > > if (!ctrl_dev) {
> > > new_ctrl_dev = serial_core_ctrl_device_add(port);
> > > - if (!new_ctrl_dev) {
> > > + if (IS_ERR_OR_NULL(new_ctrl_dev)) {
> > > ret = -ENODEV;
> > > goto err_unlock;
> > > }
> >
> > Hmm actually we should also change to use ret = PTR_ERR(new_ctrl_dev) here
> > instead of translating all the errors to -ENODEV. Will send out v2 version.
>
> Why OR_NULL at all, actually?
Yup there should be no need for that thanks.
Regards,
Tony
