linux-kernel - Re: [PATCH v7 3/3] gpio: dwapb: add gpio-signaled acpi event support

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Message-ID: <57109F2D.6020807@huawei.com>
Date:	Fri, 15 Apr 2016 15:58:37 +0800
From:	Jiang Qiu <qiujiang@...wei.com>
To:	Linus Walleij <linus.walleij@...aro.org>,
	Mika Westerberg <mika.westerberg@...ux.intel.com>
CC:	Alexandre Courbot <gnurou@...il.com>,
	Andy Shevchenko <andy.shevchenko@...il.com>,
	Alan Tull <delicious.quinoa@...il.com>,
	"Jamie Iles" <jamie@...ieiles.com>, <charles.chenxin@...wei.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-gpio@...r.kernel.org" <linux-gpio@...r.kernel.org>,
	"ACPI Devel Maling List" <linux-acpi@...r.kernel.org>,
	Linuxarm <linuxarm@...wei.com>
Subject: Re: [PATCH v7 3/3] gpio: dwapb: add gpio-signaled acpi event support

在 2016/4/15 15:40, Linus Walleij 写道:
> On Tue, Apr 12, 2016 at 8:46 AM, Mika Westerberg
> <mika.westerberg@...ux.intel.com> wrote:
>> On Mon, Apr 11, 2016 at 08:43:22PM +0800, Jiang Qiu wrote:
>>>> Currently it just complains if something goes wrong. The GPIO driver
>>>> itself can still work just fine (including interrupts).
>>>>
>>>> I'm fine to change it to return an error code.
>>> Agree, if add a error code for acpi_gpiochip_request_interrupts(), it looks more pretty.
>>>
>>> However, this function is common for other part, maybe cause any other effects if I
>>> do this change, did you think so?
>> I'm thinking what the callers are going to do with the error code.
>> Basically it means that we were not able to attach and configure ACPI
>> event GPIOs. It does not prevent GPIO drivers from functioning so they
>> probably just print out some warning message and continue probing, and
>> we already warn in acpi_gpiochip_request_interrupts() if something fails.
>>
>> Unless Linus W insists, let's just keep it as is for now :)
> I'm fine with it, don' worry.
>
> I'm just waiting for this patch set to mature so I can apply
> it.
Many thanks, I will fix these minor mentioned by Andy and get ready for the new version
ASAP.

Regards,
Jiang
>
> Yours,
> Linus Walleij
>
> .
>