linux-kernel - Re: [PATCH] ARM: brcmstb: update CPU power management sequence

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Date:	Mon, 12 Jan 2015 15:11:52 -0800
From:	Florian Fainelli <f.fainelli@...il.com>
To:	Gregory Fong <gregory.0xf0@...il.com>,
	Brian Norris <computersforpeace@...il.com>
CC:	Russell King <linux@....linux.org.uk>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH] ARM: brcmstb: update CPU power management sequence

On 17/12/14 15:25, Gregory Fong wrote:
> On Tue, Dec 16, 2014 at 7:13 PM, Brian Norris
> <computersforpeace@...il.com> wrote:
>> The automatic CPU power state machine for B15 CPUs does not work
>> reliably as-is. This patch implements a manual sequence in software to
>> replace it.
>>
>> This was tested successfully with over 10,000 hotplug cycles of
>> something like this:
>>
>>   echo 0 > /sys/devices/system/cpu/cpu1/online
>>   echo 1 > /sys/devices/system/cpu/cpu1/online
>>
>> whereas the existing sequence often locks up after a few hundred cycles.
>>
>> Fixes: 62639c2f5332 ("ARM: brcmstb: reintroduce SMP support")
>> Signed-off-by: Brian Norris <computersforpeace@...il.com>
> 
> Acked-by: Gregory Fong <gregory.0xf0@...il.com>
> 

Applied, and queued up for 3.20, thanks!
-- 
Florian
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