linux-kernel - Re: [PATCH V2] ARM: shmobile: cpuidle: Remove the pointless default driver

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Message-ID: <20150319020526.GL14051@verge.net.au>
Date:	Thu, 19 Mar 2015 11:05:26 +0900
From:	Simon Horman <horms@...ge.net.au>
To:	Daniel Lezcano <daniel.lezcano@...aro.org>
Cc:	geert Uytterhoeven <geert@...ux-m68k.org>, magnus.damm@...il.com,
	linux-pm@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-sh@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH V2] ARM: shmobile: cpuidle: Remove the pointless default
 driver

On Tue, Mar 17, 2015 at 04:26:50PM +0100, Daniel Lezcano wrote:
> 
> Sorry Geert, I forget to Cc you.
> 
> On 03/17/2015 04:25 PM, Daniel Lezcano wrote:
> >The default idle driver uses one state with the WFI instruction.
> >The default idle routine invokes WFI when no cpuidle driver is present.
> >
> >The default cpuidle driver is pointless and does not give more than the
> >default idle routine and moreover it pulls all the mathematics tied with
> >the cpuidle governor for nothing, hence consuming more energy.
> >
> >Remove the default driver, the related code and register the driver directly.
> >
> >[compiled only - no board - no test]
> >
> >Signed-off-by: Daniel Lezcano <daniel.lezcano@...aro.org>

Thanks Daniel,

I have queued this up for v4.1.
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