linux-kernel - Re: [PATCH RESEND] ARM: trusted_foundations: fix compile error on non-SMP

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Date:	Fri, 23 May 2014 22:24:39 +0400
From:	Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
To:	Alexandre Courbot <acourbot@...dia.com>,
	Stephen Warren <swarren@...dia.com>
CC:	Olof Johansson <olof@...om.net>, linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH RESEND] ARM: trusted_foundations: fix compile error on
 non-SMP

Hello.

On 05/23/2014 04:23 AM, Alexandre Courbot wrote:

> The setup_max_cpus variable is only defined if CONFIG_SMP is set. Add
> a preprocessor condition to avoid the following compilation error if
> CONFIG_SMP is not set:

>      arch/arm/include/asm/trusted_foundations.h: In function 'register_trusted_foundations':
>      arch/arm/include/asm/trusted_foundations.h:57:2: error: 'setup_max_cpus' undeclared (first use in this function)

> Signed-off-by: Alexandre Courbot <acourbot@...dia.com>
> Reported-by: Russell King <rmk+kernel@....linux.org.uk>
> ---
> Hi Stephen,

> This patch has been originally submitted through Russell's patch tracker,
> where it has stayed untouched for ~3 weeks now. Considering that this
> fixes a compilation error and should thus be made available quickly, and
> that Tegra is the only user of Trusted Foundations, would you agree to take
> it into your tree?

>   arch/arm/include/asm/trusted_foundations.h | 2 ++
>   1 file changed, 2 insertions(+)

> diff --git a/arch/arm/include/asm/trusted_foundations.h b/arch/arm/include/asm/trusted_foundations.h
> index b5f7705..624e1d4 100644
> --- a/arch/arm/include/asm/trusted_foundations.h
> +++ b/arch/arm/include/asm/trusted_foundations.h
> @@ -54,7 +54,9 @@ static inline void register_trusted_foundations(
>   	 */
>   	pr_err("No support for Trusted Foundations, continuing in degraded mode.\n");
>   	pr_err("Secondary processors as well as CPU PM will be disabled.\n");
> +#if IS_ENABLED(CONFIG_SMP)

	if (IS_ENABLED(CONFIG_SMP))

>   	setup_max_cpus = 0;
> +#endif

WBR, Sergei

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