From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <linux-kernel-owner@vger.kernel.org>
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
	id S1752931AbbCXKol (ORCPT <rfc822;w@1wt.eu>);
	Tue, 24 Mar 2015 06:44:41 -0400
Received: from mail-oi0-f43.google.com ([209.85.218.43]:33345 "EHLO
	mail-oi0-f43.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org
	with ESMTP id S1752826AbbCXKoh (ORCPT
	<rfc822;linux-kernel@vger.kernel.org>);
	Tue, 24 Mar 2015 06:44:37 -0400
MIME-Version: 1.0
In-Reply-To: <1427118025-4380-1-git-send-email-robert.dolca@intel.com>
References: <1427118025-4380-1-git-send-email-robert.dolca@intel.com>
Date: Tue, 24 Mar 2015 11:44:36 +0100
Message-ID: <CACRpkdawMLA=ROND=hp-_J6Ye=By5YYqwgBc0TYViUUpWj8X6w@mail.gmail.com>
Subject: Re: [PATCH] IIO: Adds ACPI support for ST gyroscopes
From: Linus Walleij <linus.walleij@linaro.org>
To: Robert Dolca <robert.dolca@intel.com>
Cc: "linux-iio@vger.kernel.org" <linux-iio@vger.kernel.org>,
        Jonathan Cameron <jic23@kernel.org>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        Hartmut Knaack <knaack.h@gmx.de>, Lars-Peter Clausen <lars@metafoo.de>,
        Peter Meerwald <pmeerw@pmeerw.net>, Denis CIOCCA <denis.ciocca@st.com>
Content-Type: text/plain; charset=UTF-8
Sender: linux-kernel-owner@vger.kernel.org
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org

On Mon, Mar 23, 2015 at 2:40 PM, Robert Dolca <robert.dolca@intel.com> wrote:

Oh more comments still...

> +       /* Get IRQ GPIO */
> +       gpiod_irq = devm_gpiod_get_index(&client->dev, 0, 0);
> +       if (IS_ERR(gpiod_irq))
> +               return -ENODEV;

Shouldn't that be devm_gpiod_get_index_optional()?

I think the driver is useable also without that GPIO/IRQ
and should not error out. (Will cause bugs in other
platforms!)

Also: maybe the GPIO/IRQ support should be in a separate
patch so as not to confuse with the ACPI stuff.

Yours,
Linus Walleij