linux-kernel - Re: [PATCH v5 1/4] cpu_pm: add syscore

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Date:   Wed, 7 Feb 2018 08:57:27 +0000
From:   Marc Zyngier <marc.zyngier@....com>
To:     Derek Basehore <dbasehore@...omium.org>,
        linux-kernel@...r.kernel.org
Cc:     Soby.Mathew@....com, sudeep.holla@....com,
        devicetree@...r.kernel.org, robh+dt@...nel.org,
        mark.rutland@....com, linux-pm@...r.kernel.org,
        rafael.j.wysocki@...el.com, tglx@...utronix.de,
        briannorris@...omium.org
Subject: Re: [PATCH v5 1/4] cpu_pm: add syscore_suspend error handling

On 07/02/18 01:41, Derek Basehore wrote:
> If cpu_cluster_pm_enter() fails, cpu_pm_exit() should be called. This
> will put the CPU in the correct state to resume from the failure.
> 
> Signed-off-by: Derek Basehore <dbasehore@...omium.org>
> ---
>  kernel/cpu_pm.c | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/kernel/cpu_pm.c b/kernel/cpu_pm.c
> index 67b02e138a47..03bcc0751a51 100644
> --- a/kernel/cpu_pm.c
> +++ b/kernel/cpu_pm.c
> @@ -186,6 +186,9 @@ static int cpu_pm_suspend(void)
>  		return ret;
>  
>  	ret = cpu_cluster_pm_enter();
> +	if (ret)
> +		cpu_pm_exit();
> +
>  	return ret;
>  }
>  
> 

It is unclear to me why we need this patch as part of the ITS series. I
probably fixes something for you, but I don't see the connection with
the other patches.

Thanks,

	M.
-- 
Jazz is not dead. It just smells funny...