linux-kernel - Re: [PATCH] ARM: mm: cpu_fa526_do

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Message-ID: <CACmBeS3_aqf42sCKeO9TNJSkOPYwvyAXOvYKjrU8_jV6yAKQ-g@mail.gmail.com>
Date:	Mon, 17 Jun 2013 16:58:14 +0200
From:	Jonas Jensen <jonas.jensen@...il.com>
To:	Russell King - ARM Linux <linux@....linux.org.uk>
Cc:	Arnd Bergmann <arnd@...db.de>,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	ulli.kroll@...glemail.com, arm@...nel.org,
	Florian Fainelli <florian@...nwrt.org>,
	Imre Kaloz <kaloz@...nwrt.org>
Subject: Re: [PATCH] ARM: mm: cpu_fa526_do_idle: remove WFI

On 17 June 2013 16:30, Russell King - ARM Linux <linux@....linux.org.uk> wrote:
> It replaces the WFI and return with a pure nop, so we will fall through
> to cpu_fa526_dcache_clean_area().  Do we really want to clean a random
> D cache entry depending on what r0 happened to hold at this point?  I
> think not...

I'm sorry for making the assumption that I know even the most basic
ARM assembler...

This is not the sort of thing I deal with (and probably shouldn't) on
a daily basis.

Can I make a guess, remove only mcr and replace it with nop?

Best regards,
Jonas
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