linux-kernel - Re: [PATCH v4 1/3] Input: gpio-keys - add support for wakeup event action

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Date:   Thu, 08 Mar 2018 15:32:09 +0800
From:   JeffyChen <jeffy.chen@...k-chips.com>
To:     Andy Shevchenko <andy.shevchenko@...il.com>
CC:     Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        briannorris@...gle.com,
        Heiko Stübner <heiko@...ech.de>,
        Dmitry Torokhov <dtor@...gle.com>,
        Douglas Anderson <dianders@...gle.com>,
        devicetree <devicetree@...r.kernel.org>,
        Guenter Roeck <linux@...ck-us.net>,
        Thomas Gleixner <tglx@...utronix.de>,
        Joseph Lo <josephl@...dia.com>,
        stephen lu <lumotuwe@...il.com>,
        Rob Herring <robh+dt@...nel.org>,
        Dmitry Torokhov <dmitry.torokhov@...il.com>,
        Kate Stewart <kstewart@...uxfoundation.org>,
        linux-input <linux-input@...r.kernel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Mark Rutland <mark.rutland@....com>,
        Philippe Ombredanne <pombredanne@...b.com>,
        Arvind Yadav <arvind.yadav.cs@...il.com>
Subject: Re: [PATCH v4 1/3] Input: gpio-keys - add support for wakeup event
 action

Hi Andy,

Thanks for your reply.

On 03/07/2018 07:57 PM, Andy Shevchenko wrote:
> On Tue, Mar 6, 2018 at 9:44 AM, Jeffy Chen <jeffy.chen@...k-chips.com> wrote:
>> Add support for specifying event actions to trigger wakeup when using
>> the gpio-keys input device as a wakeup source.
>>
>> This would allow the device to configure when to wakeup the system. For
>> example a gpio-keys input device for pen insert, may only want to wakeup
>> the system when ejecting the pen.
>
>> +       bool wakeup_enabled;
>
>> +                       if (bdata->wakeup_enabled) {
>
> This is redundant. IRQ core keeps track on this information already.
>
> Check below as an example
> aef3ad103a68 ("serial: core: remove unneeded irq_wake flag")
>
right, that make sense.
>