netdev - Re: [PATCH 1/2][RFC] Update net core to use devres.

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Message-ID: <20070724230922.GA27392@ftp.linux.org.uk>
Date:	Wed, 25 Jul 2007 00:09:22 +0100
From:	Al Viro <viro@....linux.org.uk>
To:	bphilips@...e.de
Cc:	netdev@...r.kernel.org
Subject: Re: [PATCH 1/2][RFC] Update net core to use devres.

On Tue, Jul 24, 2007 at 11:51:34PM +0100, Al Viro wrote:
> On Tue, Jul 24, 2007 at 03:39:52PM -0700, bphilips@...e.de wrote:
> > * netdev_pci_remove_one() can replace simple pci device remove
> >   functions
> > 
> > * devm_alloc_netdev() is like alloc_netdev but allocates memory using devres.
> >   alloc_netdev() can be removed once all drivers use devres.
>  
> Ewwww...  What the hell for?  To make sure that we have struct device
> for everything, whether we need it or not?  Have you actually read
> through drivers/net?  I mean, _really_ read through it, looking for
> ugly cases...
> 
> I've done just that several times and I'm sorry, but I would classify
> that project as hopeless.  It's way, _way_ more diverse than SATA...

Actually, it's even worse - net_device itself simply *cannot* be
dealt with that way.  Its lifetime can indefinitely exceed that
of underlying e.g. PCI device.
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