linux-kernel - RE: [RFC V4 1/3] add CONFIG_HAVE_ARCH_BITREVERSE to support rbit instruction

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Message-ID: <35FD53F367049845BC99AC72306C23D103E010D18263@CNBJMBX05.corpusers.net>
Date:	Wed, 29 Oct 2014 13:36:30 +0800
From:	"Wang, Yalin" <Yalin.Wang@...ymobile.com>
To:	'Joe Perches' <joe@...ches.com>
CC:	'Rob Herring' <robherring2@...il.com>,
	Russell King - ARM Linux <linux@....linux.org.uk>,
	Will Deacon <Will.Deacon@....com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"akinobu.mita@...il.com" <akinobu.mita@...il.com>,
	"linux-mm@...ck.org" <linux-mm@...ck.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>
Subject: RE: [RFC V4 1/3] add CONFIG_HAVE_ARCH_BITREVERSE to support rbit
 instruction

> From: Joe Perches [mailto:joe@...ches.com]
> > We also change byte_rev_table[] to be static, to make sure no drivers
> > can access it directly.
> 
> You break the build with this patch.
> 
> You can't do this until the users of the table are converted.
> 
> So far, they are not.
> 
> I submitted patches for these uses, but those patches are not yet applied.
> 
> Please make sure the dependencies for your patches are explicitly stated.
> 
Oh,  byte_rev_table[] must be extern,
Otherwise, bitrev8() can't access it ,
I will change it.
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