From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jean Delvare Subject: Re: [PATCH 3/6] i2c: ignore active clients detaching during adapter removal. Date: Thu, 28 May 2009 09:50:54 +0200 Message-ID: <20090528095054.03fc2df3@hyperion.delvare> References: <1233840973-13268-1-git-send-email-giometti@linux.it> <1233840973-13268-3-git-send-email-giometti@linux.it> <1233840973-13268-4-git-send-email-giometti@linux.it> <200902051602.44036.david-b@pacbell.net> <20090206102220.GF28554@enneenne.com> <20090206131520.232b53c3@hyperion.delvare> <20090206125907.GA8581@enneenne.com> <20090206221519.5fc3d2b9@hyperion.delvare> <20090209130642.GV7975@enneenne.com> <20090210120839.23592e38@hyperion.delvare> <20090218164812.GA11217@enneenne.com> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20090218164812.GA11217-AVVDYK/kqiJWk0Htik3J/w@public.gmane.org> Sender: linux-i2c-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Rodolfo Giometti Cc: David Brownell , linux-i2c-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Kumar Gala , Peter Korsgaard List-Id: linux-i2c@vger.kernel.org Hi Rodolfo, Sorry for the late answer, I missed this post in the middle of the thread. On Wed, 18 Feb 2009 17:48:13 +0100, Rodolfo Giometti wrote: > On Tue, Feb 10, 2009 at 12:08:39PM +0100, Jean Delvare wrote: > > Well, you can always do that if you want, but please first clearly > > define the practical problem you are trying to solve. We are not going > > to change the i2c core without a good reason. > > I created a new page here: > > http://i2c.wiki.kernel.org/index.php/I2C_bus_multiplexing Thanks for doing this! > Please, take a look and report everything should be fixed. :) Random comments: * I really would like to get rid of the "virtual" term that has been repeatedly abused. Bus segments behind multiplexers are very real. * I am surprised that you use the term "trunk" for all segments, be they in front of or behind multiplexers. When I think of a multiplexer, I designate the segment between the controller and the multiplexer as the trunk, and the segments behind the multiplexer as branches. Other than that I am rather happy with your page, which explains the problem and the proposed solution clearly. -- Jean Delvare