linux-kernel - Re: [PATCH] staging: comedi: serial2002: quiet NULL pointer sparse noise

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Message-ID: <20120608065125.GL4400@mwanda>
Date:	Fri, 8 Jun 2012 09:51:25 +0300
From:	Dan Carpenter <dan.carpenter@...cle.com>
To:	Ian Abbott <abbotti@....co.uk>
Cc:	H Hartley Sweeten <hartleys@...ionengravers.com>,
	"devel@...verdev.osuosl.org" <devel@...verdev.osuosl.org>,
	"fmhess@...rs.sourceforge.net" <fmhess@...rs.sourceforge.net>,
	Ian Abbott <ian.abbott@....co.uk>,
	Linux Kernel <linux-kernel@...r.kernel.org>,
	"gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>
Subject: Re: [PATCH] staging: comedi: serial2002: quiet NULL pointer sparse
 noise

On Fri, Jun 08, 2012 at 07:46:19AM +0100, Ian Abbott wrote:
> On 08/06/12 01:14, H Hartley Sweeten wrote:
> >Quiet a number of sparse warnings in this file:
> >
> >warning: Using plain integer as NULL pointer
> 
> I wonder why sparse warns about that for a literal, unadorned 0?  I
> suppose NULL is more explicit, but a plain 0 means the same as NULL
> in a pointer context (unlike a zero from some random expression).
> 

http://lwn.net/Articles/93574/

regards,
dan carpenter

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