linux-kernel - Re: [linux-usb-devel] Is this bug too obvious?

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Message-Id: <20070214010623.E0FA7218500@adsl-69-226-248-13.dsl.pltn13.pacbell.net>
Date:	Tue, 13 Feb 2007 17:06:23 -0800
From:	David Brownell <david-b@...bell.net>
To:	randy.dunlap@...cle.com, linux-usb-devel@...ts.sourceforge.net,
	cebbert@...hat.com
Cc:	linux-kernel@...r.kernel.org, davej@...hat.com
Subject: Re: [linux-usb-devel] Is this bug too obvious?

No bug; read net/ethernet/eth.c to see what that parameter means.

> > drivers/usb/net/usbnet.c:
> > 
> > int
> > usbnet_probe (struct usb_interface *udev, const struct usb_device_id *prod)
> > {
> >         struct usbnet                   *dev;
> >         struct net_device               *net;
> >         struct usb_host_interface       *interface;
> >         struct driver_info              *info;
> >         struct usb_device               *xdev;
> >         int                             status;
> > 
> > 	...
> > 
> >         net = alloc_etherdev(sizeof(*dev));
> >                                     ^^^^
> > 	                            *net ???

It's allocating *extra* space ... used just a few lines later:

        dev = netdev_priv(net);

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