linux-kernel - Re: [PATCH 03/15] drivers: devfreq: Drop unlikely before IS_ERR(_OR

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Message-ID: <20150803054758.GA16589@linux>
Date:	Mon, 3 Aug 2015 11:17:58 +0530
From:	Viresh Kumar <viresh.kumar@...aro.org>
To:	MyungJoo Ham <myungjoo.ham@...sung.com>
Cc:	"akpm@...ux-foundation.org" <akpm@...ux-foundation.org>,
	"linaro-kernel@...ts.linaro.org" <linaro-kernel@...ts.linaro.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	박경민 <kyungmin.park@...sung.com>,
	"open list:DEVICE FREQUENCY (DEVFREQ)" <linux-pm@...r.kernel.org>
Subject: Re: [PATCH 03/15] drivers: devfreq: Drop unlikely before
 IS_ERR(_OR_NULL)

On 03-08-15, 05:10, MyungJoo Ham wrote:
> > IS_ERR(_OR_NULL) already contain an 'unlikely' compiler flag and there
> > is no need to do that again from its callers. Drop it.
> > 
> > Signed-off-by: Viresh Kumar <viresh.kumar@...aro.org>
> 
> @ from include/linux/err.h
> #define IS_ERR_VALUE(x) unlikely((x) >= (unsigned long)-MAX_ERRNO)
> ...
> static inline bool __must_check IS_ERR_OR_NULL(__force const void *ptr)
> {
> 	return !ptr || IS_ERR_VALUE((unsigned long)ptr);
> }
> 
> "!ptr" appears not covered with IS_ERR_OR_NULL.
> (only the IS_ERR part seems covered)

Right, the first patch of the series has fixed that.

http://permalink.gmane.org/gmane.linux.kernel/2009151

-- 
viresh
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