Re: [PATCH 10/12] ARM: shmobile: r8a7740: Add CPUIdle

[Daniel Lezcano <daniel.lezcano@linaro.org>]

On 05/28/2013 05:54 AM, Olof Johansson wrote:
> On Mon, May 27, 2013 at 01:03:31PM +0200, Daniel Lezcano wrote:
>> On 05/27/2013 10:59 AM, Simon Horman wrote:
>>> From: Bastian Hecht <hechtb@gmail.com>
>>>
>>> We make use of the r8a7740 Suspend To Ram code to plug together a
>>> CPUIdle driver.
>>>
>>> Signed-off-by: Bastian Hecht <hechtb+renesas@gmail.com>
>>> Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
>>> ---
>>
>> Shouldn't it go through Rafael's tree ? Or does the patch contains some
>> dependencies on a code only visible in the ARM tree ?
> 
> Missing S-o-b from Simon. But this patch clearly builds on the preceding
> one in the series, so merging them independently might not make much
> sense. Getting an ack from Rafael would be nice though.

I was not suggesting to put the driver in the drivers/cpuidle directory
but to merge the driver through Rafael's tree as we decided some weeks
ago [1]. Although having the drivers all over the place does not help to
consolidate the code, so moving them little by little to drivers/cpuidle
makes sense but this is part of another work.

> I was going to say that it should probably go under drivers/cpuidle as
> well, but that just seems silly -- there is practically no code to share
> with any other platform in this small driver, AND there's not really
> any subsystem-internal data exposed. So it might just make more sense
> to keep it under arch/arm instead.
> 
> Likewise, looking at the kirkwood and calxeda drivers under drivers/cpuidle,
> I'm wondering why we thought it was a good idea to merge them there, besides
> getting caught up in the "nothing can live under arch/arm any more" frenzy.

Having the drivers in the drivers/cpuidle directory like drivers/cpufreq
will help to keep a consistency with the code and a single entry point
for upstream and review.

Thanks.
  -- Daniel

[1] https://patchwork.kernel.org/patch/2492841/

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