linux-kernel - Re: [PATCH 3/4] exynos: cpuidle: do not allow cpuidle registration for Exynos5420

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Message-ID: <535646A1.1020201@linaro.org>
Date:	Tue, 22 Apr 2014 12:38:25 +0200
From:	Daniel Lezcano <daniel.lezcano@...aro.org>
To:	Chander Kashyap <chander.kashyap@...aro.org>,
	linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-samsung-soc@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org
CC:	lorenzo.pieralisi@....com, rjw@...ysocki.net,
	kgene.kim@...sung.com, Chander Kashyap <k.chander@...sung.com>
Subject: Re: [PATCH 3/4] exynos: cpuidle: do not allow cpuidle registration
 for Exynos5420

On 04/21/2014 01:49 PM, 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>

but will conflict with:

http://www.spinics.net/lists/arm-kernel/msg319862.html

>   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 c57cae0..242f75d 100644
> --- a/arch/arm/mach-exynos/cpuidle.c
> +++ b/arch/arm/mach-exynos/cpuidle.c
> @@ -219,6 +219,9 @@ 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();
>
>


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