linux-kernel - [Bisected] ALSA: snd-usb: New streaming logic causes distortions on Burr-Brown DAC

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Message-ID: <20120608164004.GA580@x4>
Date:	Fri, 8 Jun 2012 18:40:04 +0200
From:	Markus Trippelsdorf <markus@...ppelsdorf.de>
To:	alsa-devel@...a-project.org
Cc:	linux-kernel@...r.kernel.org, zonque@...il.com, tiwai@...e.de
Subject: [Bisected] ALSA: snd-usb: New streaming logic causes distortions on
 Burr-Brown DAC

I hear distortions on my Burr-Brown USB DAC whenever the (software)
volume is set to some value lower than 100% in mpd. The lower the volume
the bigger are the resulting distortions.

I've bisected this to the two commits below:
(One wouldn't compile without the other)

commit d399ff9593e088d33fb38f5206c6427825892baa
Author: Daniel Mack <zonque@...il.com>
Date:   Thu Apr 12 13:51:13 2012 +0200

    ALSA: snd-usb: remove old streaming logic

commit edcd3633e72a1590c4cf46befe5e6cd03b5aec3e
Author: Daniel Mack <zonque@...il.com>
Date:   Thu Apr 12 13:51:12 2012 +0200

    ALSA: snd-usb: switch over to new endpoint streaming logic

-- 
Markus
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