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

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Date:	Tue, 12 Apr 2016 14:55:52 +0800
From:	Jiang Qiu <qiujiang@...wei.com>
To:	Mika Westerberg <mika.westerberg@...ux.intel.com>
CC:	Linus Walleij <linus.walleij@...aro.org>,
	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 2016/4/12 14:46, Mika Westerberg 写道:
> 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 :)
Fine to me, thanks:).
> .
>