linux-kernel - Re: [PATCH v5 5/6] exynos: cpuidle: do not allow cpuidle registration for Exynos5420

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Message-ID: <CANuQgHGSA+R__raSa_tzrgpceqLD2SZw+s0XQUHGF4wscgh6Kg@mail.gmail.com>
Date:	Fri, 16 May 2014 09:31:38 +0530
From:	Chander Kashyap <chander.kashyap@...aro.org>
To:	Tomasz Figa <tomasz.figa@...il.com>
Cc:	"linux-pm@...r.kernel.org" <linux-pm@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-samsung-soc@...r.kernel.org" 
	<linux-samsung-soc@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	Daniel Lezcano <daniel.lezcano@...aro.org>,
	Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	Kukjin Kim <kgene.kim@...sung.com>,
	Chander Kashyap <k.chander@...sung.com>
Subject: Re: [PATCH v5 5/6] exynos: cpuidle: do not allow cpuidle registration
 for Exynos5420

Hi Tomasz,

On 16 May 2014 02:56, Tomasz Figa <tomasz.figa@...il.com> wrote:
> Hi Chander,
>
> On 14.05.2014 10:03, Chander Kashyap wrote:
>> Exynos5420 is big.Little Soc. It uses cpuidle-big-litle generic cpuidle driver.
>> Hence do not allow exynos cpuidle driver registration for Exynos5420.
>>
>> Signed-off-by: Chander Kashyap <chander.kashyap@...aro.org>
>> Signed-off-by: Chander Kashyap <k.chander@...sung.com>
>> Acked-by: Daniel Lezcano <daniel.lezcano@...aro.org>
>> ---
>>  arch/arm/mach-exynos/cpuidle.c |    3 +++
>>  1 file changed, 3 insertions(+)
>>
>> diff --git a/arch/arm/mach-exynos/cpuidle.c b/arch/arm/mach-exynos/cpuidle.c
>> index 3dd385e..807a386 100644
>> --- a/arch/arm/mach-exynos/cpuidle.c
>> +++ b/arch/arm/mach-exynos/cpuidle.c
>> @@ -218,6 +218,9 @@ static int exynos_cpuidle_probe(struct platform_device *pdev)
>>       int cpu_id, ret;
>>       struct cpuidle_device *device;
>>
>> +     if (soc_is_exynos5420())
>> +             return -ENODEV;
>> +
>>       if (soc_is_exynos5250())
>>               exynos5_core_down_clk();
>>
>>
>
> Why not put this in exynos.c in exynos_dt_machine_init(), so
> exynos_cpuidle_init() is called only if not running on Exynos5420?
>

That makes more sense.
I will update this

Thanks
> Best regards,
> Tomasz



-- 
with warm regards,
Chander Kashyap
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