linux-kernel - Re: [PATCH v5 3/3] x86/platform/intel-mid: Add special handling of ACPI HW reduced platforms

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Date:   Tue, 20 Feb 2018 19:43:15 +0100
From:   "Rafael J. Wysocki" <rafael@...nel.org>
To:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Cc:     Thomas Gleixner <tglx@...utronix.de>,
        "H . Peter Anvin" <hpa@...or.com>, Ingo Molnar <mingo@...nel.org>,
        "the arch/x86 maintainers" <x86@...nel.org>,
        Eric Biederman <ebiederm@...ssion.com>,
        "Rafael J . Wysocki" <rafael.j.wysocki@...el.com>,
        ACPI Devel Maling List <linux-acpi@...r.kernel.org>,
        Juergen Gross <jgross@...e.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v5 3/3] x86/platform/intel-mid: Add special handling of
 ACPI HW reduced platforms

On Tue, Feb 20, 2018 at 7:05 PM, Andy Shevchenko
<andriy.shevchenko@...ux.intel.com> wrote:
> When switching to ACPI HW reduced platforms we still want to initialize timers.
> Override x86_init.acpi.reduced_hw_init to achieve that.
>
> Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>

Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@...el.com>

> ---
>  arch/x86/platform/intel-mid/intel-mid.c | 6 ++++++
>  1 file changed, 6 insertions(+)
>
> diff --git a/arch/x86/platform/intel-mid/intel-mid.c b/arch/x86/platform/intel-mid/intel-mid.c
> index 2c67bae6bb53..c556f1e8936e 100644
> --- a/arch/x86/platform/intel-mid/intel-mid.c
> +++ b/arch/x86/platform/intel-mid/intel-mid.c
> @@ -199,6 +199,12 @@ void __init x86_intel_mid_early_setup(void)
>
>         legacy_pic = &null_legacy_pic;
>
> +       /*
> +        * Do nothing for now as everything needed done in
> +        * x86_intel_mid_early_setup() below.
> +        */
> +       x86_init.acpi.reduced_hw_early_init = x86_init_noop;
> +
>         pm_power_off = intel_mid_power_off;
>         machine_ops.emergency_restart  = intel_mid_reboot;
>
> --
> 2.15.1
>
> --
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