From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754541AbZK0LiG (ORCPT ); Fri, 27 Nov 2009 06:38:06 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751995AbZK0LiF (ORCPT ); Fri, 27 Nov 2009 06:38:05 -0500 Received: from opensource.wolfsonmicro.com ([80.75.67.52]:60035 "EHLO opensource2.wolfsonmicro.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1753482AbZK0LiD (ORCPT ); Fri, 27 Nov 2009 06:38:03 -0500 Date: Fri, 27 Nov 2009 11:38:08 +0000 From: Mark Brown To: Peter Ujfalusi Cc: ext Tejun Heo , Takashi Iwai , Andy Walls , Stephen Rothwell , "linux-next@vger.kernel.org" , "linux-kernel@vger.kernel.org" Subject: Re: linux-next: workqueues tree build failure Message-ID: <20091127113808.GC29821@rakim.wolfsonmicro.main> References: <20091126190050.3f9d7fef.sfr@canb.auug.org.au> <4B0F90F3.2010204@kernel.org> <200911271209.18979.peter.ujfalusi@nokia.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <200911271209.18979.peter.ujfalusi@nokia.com> X-Cookie: Have an adequate day. User-Agent: Mutt/1.5.20 (2009-06-14) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Nov 27, 2009 at 12:09:18PM +0200, Peter Ujfalusi wrote: > For the record: on OMAP platforms the I2C implementation is sleeping during the > transfer (internally using interrupt based transfer), which might be not that > wise in the tasklet. Since the I2C bus is kind of a slow bus, this could take > several ms in some cases. There's also the possibility of contention with other users of the I2C bus which doesn't help matters here.