linux-kernel - Re: [PATCH 2/5] USB: Provide USB boot device availability notification

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Date:	Thu, 30 Apr 2009 11:32:37 -0400 (EDT)
From:	Alan Stern <stern@...land.harvard.edu>
To:	Sergei Shtylyov <sshtylyov@...mvista.com>
cc:	David VomLehn <dvomlehn@...co.com>, <linux-usb@...r.kernel.org>,
	<gregkh@...e.de>, <linux-kernel@...r.kernel.org>
Subject: Re: [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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