linux-kernel - RE: [RFC V2] arm/arm64:add CONFIG_HAVE_ARCH_BITREVERSE to support rbit instruction

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Date:	Mon, 27 Oct 2014 15:13:50 +0800
From:	"Wang, Yalin" <Yalin.Wang@...ymobile.com>
To:	'Joe Perches' <joe@...ches.com>
CC:	'Russell King - ARM Linux' <linux@....linux.org.uk>,
	"'linux-mm@...ck.org'" <linux-mm@...ck.org>,
	'Will Deacon' <Will.Deacon@....com>,
	"'linux-kernel@...r.kernel.org'" <linux-kernel@...r.kernel.org>,
	"'linux-arm-kernel@...ts.infradead.org'" 
	<linux-arm-kernel@...ts.infradead.org>,
	"'akinobu.mita@...il.com'" <akinobu.mita@...il.com>
Subject: RE: [RFC V2] arm/arm64:add CONFIG_HAVE_ARCH_BITREVERSE to support
 rbit instruction



> 
> If this is done, the direct uses of byte_rev_table in
> drivers/net/wireless/ath/carl9170/phy.c and sound/usb/6fire/firmware.c
> should be converted too?
> 

I think use bitrev8()  is safer than to use byte_rev_table[]  directly.

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