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SubjectRe: [PATCH 2/5] USB: Provide USB boot device availability notification
On Thu, 30 Apr 2009, Sergei Shtylyov wrote:

> > +/* The mask of possible USB boot devices depends on what drivers and
> > + * options have been configured into the kernel. There are too many
> > + * USB network config options to list here, so just assume it is always
> > + * possible to have a USB network device.
> > + */
> > +static int usb_bootdev_mask = 0
> > +#ifdef CONFIG_USB_SERIAL_CONSOLE
> > + | BOOTDEV_CONSOLE_MASK
> > +#endif
> > +#if defined(CONFIG_USB_STORAGE) | defined(CONFIG_BLK_DEV_UB)
>
> It should be ||, not bitwise | here, no?

No, it should be bitwise |. The value being constructed is a union of
disjoint mask bits.
Alan Stern



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