On Thu, Sep 30, 2021 at 6:59 AM Dan Williams <dan.j.williams@xxxxxxxxx> wrote:
>
> On Wed, Sep 29, 2021 at 7:39 PM Kuppuswamy, Sathyanarayanan
> <sathyanarayanan.kuppuswamy@xxxxxxxxxxxxxxx> wrote:
> >
> >
> >
> > On 9/29/21 6:55 PM, Dan Williams wrote:
> > >> Also, you ignored the usb_[de]authorize_interface() functions and
> > >> their friends.
> > > Ugh, yes.
> >
> > I did not change it because I am not sure about the interface vs device
> > dependency.
> >
>
> This is was the rationale for has_probe_authorization flag. USB
> performs authorization of child devices based on the authorization
> state of the parent interface.
>
> > I think following change should work.
> >
> > diff --git a/drivers/usb/core/driver.c b/drivers/usb/core/driver.c
> > index f57b5a7a90ca..84969732d09c 100644
> > --- a/drivers/usb/core/driver.c
> > +++ b/drivers/usb/core/driver.c
> > @@ -334,7 +334,7 @@ static int usb_probe_interface(struct device *dev)
> > if (udev->dev.authorized == false) {
> > dev_err(&intf->dev, "Device is not authorized for usage\n");
> > return error;
> > - } else if (intf->authorized == 0) {
> > + } else if (intf->dev.authorized == 0) {
>
> == false
Or even (!intf->dev.authorized).
> > dev_err(&intf->dev, "Interface %d is not authorized for usage\n",
> > intf->altsetting->desc.bInterfaceNumber);
> > return error;
> > @@ -546,7 +546,7 @@ int usb_driver_claim_interface(struct usb_driver *driver,
> > return -EBUSY;
> >
> > /* reject claim if interface is not authorized */
> > - if (!iface->authorized)
> > + if (!iface->dev.authorized)
>
> I'd do == false to keep it consistent with other conversions.
But this looks odd, FWIW.
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