From mboxrd@z Thu Jan 1 00:00:00 1970 From: Daniel Mack Subject: Re: M-Audio FastTrack C400 Date: Fri, 20 Apr 2012 09:54:17 +0200 Message-ID: <4F911629.5090704@gmail.com> References: <4F8D63F4.1040208@rauros.net> <4F8DF29B.9090907@rauros.net> <4F8E6CA2.8010005@ladisch.de> <4F8F7213.8070206@rauros.net> <4F8FD2A7.60700@ladisch.de> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from mail-bk0-f51.google.com (mail-bk0-f51.google.com [209.85.214.51]) by alsa0.perex.cz (Postfix) with ESMTP id AA8B6103F40 for ; Fri, 20 Apr 2012 10:10:45 +0200 (CEST) Received: by bkwj10 with SMTP id j10so7577220bkw.38 for ; Fri, 20 Apr 2012 01:10:45 -0700 (PDT) In-Reply-To: <4F8FD2A7.60700@ladisch.de> 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: Clemens Ladisch Cc: Grant Diffey , chris-alsa@rauros.net, alsa-devel@alsa-project.org List-Id: alsa-devel@alsa-project.org On 04/19/2012 10:53 AM, Clemens Ladisch wrote: > Chris Cavey wrote: >> snd-usb-audio: probe of 1-1:1.1 failed with error -5 >> snd-usb-audio: probe of 1-1:1.2 failed with error -5 >> snd-usb-audio: probe of 1-1:1.3 failed with error -5 > > Are there no other messages immediately before this? > > Daniel, are there places where the code aborts without > print an error message? Yes, there are in fact some. -5 means -EIO, and the module probe will fail with this error code in case snd_usb_audio_probe() returns NULL. Chris, can you trace this functions in sound/usb/card.c and see where it bails? Daniel