linux-kernel - Re: [PATCH RESEND 6/6] clk: s5p-g2d: Fix incorrect usage of IS_ERR_OR

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Date:	Thu, 3 Jan 2013 14:10:40 +0300
From:	Dan Carpenter <dan.carpenter@...cle.com>
To:	Russell King - ARM Linux <linux@....linux.org.uk>
Cc:	Tony Prisk <linux@...sktech.co.nz>,
	Tomasz Stanislawski <t.stanislaws@...sung.com>,
	Dan Carpenter <error27@...il.com>,
	Sergei Shtylyov <sshtylyov@...sta.com>,
	kernel-janitors@...r.kernel.org, linux-kernel@...r.kernel.org,
	Kyungmin Park <kyungmin.park@...sung.com>,
	Sylwester Nawrocki <sylvester.nawrocki@...il.com>,
	linux-arm-kernel@...ts.infradead.org, linux-media@...r.kernel.org
Subject: Re: [PATCH RESEND 6/6] clk: s5p-g2d: Fix incorrect usage of
 IS_ERR_OR_NULL

Come on...  Don't say we haven't read comment.  Obviously, the first
thing we did was read that comment.  I've read it many times at this
point and I still think we should add in a bit which says:

"NOTE:  Drivers should treat the return value as an opaque cookie
and not dereference it.  NULL returns don't imply an error so don't
use IS_ERR_OR_NULL() to check for errors."

regards,
dan carpenter
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