linux-kernel - Re: [PATCH][RESEND] Semi-pointless NULL test in uli526x driver

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Date:	Sat, 4 Aug 2007 17:14:55 -0400
From:	Kyle McMartin <kyle@...artin.ca>
To:	Jesper Juhl <jesper.juhl@...il.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Valerie Henson <val@....edu>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	tulip-users@...ts.sourceforge.net, david@...g.hm,
	Grant Grundler <grundler@...isc-linux.org>,
	Jeff Garzik <jeff@...zik.org>
Subject: Re: [PATCH][RESEND] Semi-pointless NULL test in uli526x driver

On Sat, Aug 04, 2007 at 08:32:12PM +0200, Jesper Juhl wrote:
> I don't think dev_id can ever actually be NULL, so the whole block 
> inside "if (!dev) {" could probably just go away. But I guess 
> there's a good reason someone put that ULI526X_DBUG() in there - and
> if 'dev_id' /can/ actually be NULL then it's nice to have and in 
> that case this patch actually fixes a possible crash (hence the 
> version number update). 

It *can* be null, in the case of another handler being registered on the
same irq number, passing NULL for the cookie.

Ack. Will apply.

Regards,
	Kyle
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