From mboxrd@z Thu Jan  1 00:00:00 1970
From: Pete Leigh <pete.leigh@gmail.com>
Subject: Re: Fwd: Support for Roland VG-99 (working code,
 but could use help)
Date: Fri, 19 Oct 2012 00:38:34 +0100
Message-ID: <CABn3OEHxhguP6E56DUjfPAgxyaSXOHrRSd7jEdsax3e16Zm3Nw@mail.gmail.com>
References: <CABn3OEFatrnhGs1xzpmOfXSxpSLuGwgRtN8v=1B96i6=7_9vTg@mail.gmail.com>
 <CABn3OEHRK7TLp+J_pZjMoFts4bZ=-FquQX0WKCzUcaaMZ8Nrpg@mail.gmail.com>
 <507D0F6D.1000102@gmail.com>
 <CABn3OEF1L7hqVAcjs5E5NveA741HPVd4a9eq0w9sS77PYg+2hQ@mail.gmail.com>
 <507D1C77.5080302@gmail.com>
Mime-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: 7bit
Return-path: <alsa-devel-bounces@alsa-project.org>
Received: from mail-ia0-f179.google.com (mail-ia0-f179.google.com
 [209.85.210.179])
 by alsa0.perex.cz (Postfix) with ESMTP id D263F264FE7
 for <alsa-devel@alsa-project.org>; Fri, 19 Oct 2012 01:38:35 +0200 (CEST)
Received: by mail-ia0-f179.google.com with SMTP id k25so6488610iah.38
 for <alsa-devel@alsa-project.org>; Thu, 18 Oct 2012 16:38:35 -0700 (PDT)
In-Reply-To: <507D1C77.5080302@gmail.com>
List-Unsubscribe: <http://mailman.alsa-project.org/mailman/options/alsa-devel>,
 <mailto:alsa-devel-request@alsa-project.org?subject=unsubscribe>
List-Archive: <http://mailman.alsa-project.org/pipermail/alsa-devel/>
List-Post: <mailto:alsa-devel@alsa-project.org>
List-Help: <mailto:alsa-devel-request@alsa-project.org?subject=help>
List-Subscribe: <http://mailman.alsa-project.org/mailman/listinfo/alsa-devel>,
 <mailto:alsa-devel-request@alsa-project.org?subject=subscribe>
Errors-To: alsa-devel-bounces@alsa-project.org
Sender: alsa-devel-bounces@alsa-project.org
To: Daniel Mack <zonque@gmail.com>
Cc: alsa-devel@alsa-project.org
List-Id: alsa-devel@alsa-project.org

Hi Daniel,

On 16 October 2012 09:36, Daniel Mack <zonque@gmail.com> wrote:

>>> Check out the latestes sound.git[*] and make sure your patch applies
>>> there.

> And I missed the annotation in the previous mail, so here it is:

> [*] git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound.git

I've got this kernel (sound.git) booting now, but I find that USB
audio isn't working
before I touch it.

When I connect my (known working) UA-25, this happens:

[  248.815369] usb 1-1.6: new full-speed USB device number 6 using ehci_hcd
[  248.913064] usb 1-1.6: New USB device found, idVendor=0582, idProduct=0074
[  248.913068] usb 1-1.6: New USB device strings: Mfr=1, Product=2,
SerialNumber=0
[  248.913071] usb 1-1.6: Product: EDIROL UA-25
[  248.913074] usb 1-1.6: Manufacturer: Roland
 mtp-probe: checking bus 1, device 6:
"/sys/devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.6"
 mtp-probe: bus: 1, device: 6 was not an MTP device
[  249.073737] cannot submit urb 0, error -28: not enough bandwidth

Any subsequent attempts to send audio to it result in a single "urb 0
error -28" message

I googled this a bit, and saw that there had been a problem looking like
this with USB full speed devices on ehci controllers, which does apply here.

Do you think that's what's biting me?

Cheers,

- Pete.