From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mark Brown Subject: Re: [PATCH] ASoC: MPC5200: Support for buffer wrap around Date: Sun, 2 Aug 2009 12:49:50 +0100 Message-ID: <20090802114950.GA1778@sirena.org.uk> References: <20090731230311.17686.46431.stgit@riker> <9e4733910908010647k3a4a22c5jf9b9eda482f016b1@mail.gmail.com> <1249139096.4582.13.camel@riker> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from cassiel.sirena.org.uk (cassiel.sirena.org.uk [80.68.93.111]) by alsa0.perex.cz (Postfix) with ESMTP id 9FDAF24159 for ; Sun, 2 Aug 2009 13:49:52 +0200 (CEST) Content-Disposition: inline In-Reply-To: <1249139096.4582.13.camel@riker> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: alsa-devel-bounces@alsa-project.org Errors-To: alsa-devel-bounces@alsa-project.org To: John Bonesio Cc: Grant Likely , alsa-devel@alsa-project.org, Eric Millbrandt List-Id: alsa-devel@alsa-project.org On Sat, Aug 01, 2009 at 08:04:56AM -0700, John Bonesio wrote: > When I umuted the PCM mixer setting, this printk text did not appear, > yet when I read the mixer register setting for the headphone, it was set > back to mute. Like I said before, exactly which control are you adjusting here? > If there is code in software doing this, it's very subtle. My money would be on the AC97 controller having problems; the quality of SoC AC97 controllers is variable. It certainly doesn't sound like a WM9712 issue; as I say I'd be very surprised if such an issue hadn't come up before given how widely deployed the part is.