linux-kernel - Re: [PATCH 3/5] ARM64: kernel: psci: let ACPI probe PSCI version

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Date:	Wed, 25 Mar 2015 21:35:22 +0800
From:	Hanjun Guo <guohanjun@...wei.com>
To:	Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
	<linux-kernel@...r.kernel.org>, <linux-acpi@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>
CC:	Hanjun Guo <hanjun.guo@...aro.org>,
	Sudeep Holla <sudeep.holla@....com>,
	Mark Rutland <mark.rutland@....com>,
	Will Deacon <will.deacon@....com>,
	Catalin Marinas <catalin.marinas@....com>
Subject: Re: [PATCH 3/5] ARM64: kernel: psci: let ACPI probe PSCI version

On 2015/3/25 1:58, Lorenzo Pieralisi wrote:
> PSCI v0.2+ allows the kernel to probe the PSCI firmware version.
>
> This patch replaces the default initialization of PSCI v0.2+
> functions with code that allows probing PSCI firmware version
> and initializes PSCI functions accordingly.
>
> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@....com>
> Cc: Hanjun Guo <hanjun.guo@...aro.org>
> Cc: Sudeep Holla <sudeep.holla@....com>
> Cc: Mark Rutland <mark.rutland@....com>
> ---

Reviewed-by: Hanjun Guo <hanjun.guo@...aro.org>

Thanks
Hanjun

>  arch/arm64/kernel/psci.c | 4 +---
>  1 file changed, 1 insertion(+), 3 deletions(-)
>
> diff --git a/arch/arm64/kernel/psci.c b/arch/arm64/kernel/psci.c
> index 2caac44..ea18cb5 100644
> --- a/arch/arm64/kernel/psci.c
> +++ b/arch/arm64/kernel/psci.c
> @@ -439,9 +439,7 @@ int __init psci_acpi_init(void)
>  	else
>  		invoke_psci_fn = __invoke_psci_fn_smc;
>  
> -	psci_0_2_set_functions();
> -
> -	return 0;
> +	return psci_probe();
>  }
>  
>  #ifdef CONFIG_SMP


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