linux-kernel - Re: [PATCH v2 04/15] ARM: milbeaut: Add basic support for Milbeaut m10v SoC

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Date:   Wed, 20 Feb 2019 14:17:55 +0900
From:   "Sugaya, Taichi" <sugaya.taichi@...ionext.com>
To:     Arnd Bergmann <arnd@...db.de>
Cc:     Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Shinji Kanematsu <kanematsu.shinji@...ionext.com>,
        Masami Hiramatsu <masami.hiramatsu@...aro.org>,
        Russell King <linux@...linux.org.uk>,
        Jassi Brar <jaswinder.singh@...aro.org>,
        Takao Orito <orito.takao@...ionext.com>,
        Kazuhiro Kasai <kasai.kazuhiro@...ionext.com>
Subject: Re: [PATCH v2 04/15] ARM: milbeaut: Add basic support for Milbeaut
 m10v SoC

Hi,

On 2019/02/19 18:21, Arnd Bergmann wrote:
> On Tue, Feb 19, 2019 at 8:12 AM Sugaya, Taichi
> <sugaya.taichi@...ionext.com> wrote:
>> On 2019/02/18 21:15, Arnd Bergmann wrote:
>>> On Fri, Feb 8, 2019 at 1:26 PM Sugaya Taichi
>>> <sugaya.taichi@...ionext.com> wrote:
>>
>>>> +static int __init m10v_pm_init(void)
>>>> +{
>>>> +       suspend_set_ops(&m10v_pm_ops);
>>>> +
>>>> +       return 0;
>>>> +}
>>>> +late_initcall(m10v_pm_init);
>>>
>>> This requires a check to ensure you are actually on the right platform,
>>> otherwise you break suspend/resume in a multiplatform kernel running
>>> on anything other than milbeaut.
>>>
>>
>> OK.
>> I think the solution is adding a "if statement with mlbeaut compatible"
>> above suspend_set_ops(&m10v_pm_ops).
> 
> Right, you can either use a call to of_machine_is_compatible(),
> or you add a machine descriptor with OF_MACHINE_START()
> and use this as the init_late() callback.
> 

Yeah, I will use "of_machine_is_compatible()".

Thanks,
Sugaya Taichi

>        Arnd
>