From mboxrd@z Thu Jan  1 00:00:00 1970
From: Mika Westerberg <mika.westerberg-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
Subject: Re: [PATCH v2 1/9] i2c: prepare runtime PM support for I2C client
 devices
Date: Fri, 13 Sep 2013 14:50:35 +0300
Message-ID: <20130913115035.GB7393@intel.com>
References: <1378913560-2752-1-git-send-email-mika.westerberg@linux.intel.com>
 <1378913560-2752-2-git-send-email-mika.westerberg@linux.intel.com>
 <87vc25pvvm.fsf@linaro.org>
 <20130913065434.GZ7393@intel.com>
 <20130913095950.GA29403@sirena.org.uk>
 <20130913101611.GA7393@intel.com>
 <20130913103152.GE29403@sirena.org.uk>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Return-path: <linux-i2c-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>
Content-Disposition: inline
In-Reply-To: <20130913103152.GE29403-GFdadSzt00ze9xe1eoZjHA@public.gmane.org>
Sender: linux-i2c-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
To: Mark Brown <broonie-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
Cc: Kevin Hilman <khilman-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>, linux-i2c-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Wolfram Sang <wsa-z923LK4zBo2bacvFa/9K2g@public.gmane.org>, "Rafael J. Wysocki" <rafael.j.wysocki-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>, linux-acpi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Lv Zheng <lv.zheng-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>, Aaron Lu <aaron.lu-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>, linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, Dmitry Torokhov <dmitry.torokhov-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>, Mauro Carvalho Chehab <m.chehab-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>, Samuel Ortiz <sameo-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>, Lee Jones <lee.jones-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>, Arnd Bergmann <arnd-r2nGTMty4D4@public.gmane.org>, Greg Kroah-Hartman <gregkh-hQyY1W1yCW8ekmWlsbkhG0B+6BGkLq7r@public.gmane.org>, Liam Girdwood <lgirdwood-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>, Kyungmin Park <kyungmin.park-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>
List-Id: linux-i2c@vger.kernel.org

On Fri, Sep 13, 2013 at 11:31:52AM +0100, Mark Brown wrote:
> On Fri, Sep 13, 2013 at 01:16:11PM +0300, Mika Westerberg wrote:
> > On Fri, Sep 13, 2013 at 10:59:50AM +0100, Mark Brown wrote:
> 
> > > Accessing the bus isn't an issue for I2C outside of ACPI, the power
> > > management of the device is totally disassociated from the bus and the
> > > controller is responsible for ensuring it is available during transfers.
> 
> > Yes, but since we want to support ACPI as well, we must make sure that the
> > adapter (and the associated controller) is available when client ->probe()
> > is called.
> 
> Right, but this probably needs to be highlighted more since it's a very
> surprising thing for I2C and is causing confusion.

By highlighted more, do you mean something like adding a comment in the
code about this or?