From mboxrd@z Thu Jan 1 00:00:00 1970 From: Clemens Ladisch Subject: Re: [RESENT] [PATCH - Fix Fast Track Ultra series: 44.1/88.1 kHz 1/Fix playback/capture issues and related chrashes at 44100 Hz and 88200 Hz for M-Audio Fast Track Ultra series. Date: Thu, 02 Sep 2010 11:12:59 +0200 Message-ID: <4C7F6A9B.5010707@ladisch.de> References: <4C32E3B2.5080707@web.de> <4C7E1376.9030208@web.de> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from out1.smtp.messagingengine.com (out1.smtp.messagingengine.com [66.111.4.25]) by alsa0.perex.cz (Postfix) with ESMTP id ADA9C245C7 for ; Thu, 2 Sep 2010 11:12:27 +0200 (CEST) In-Reply-To: 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: Takashi Iwai , Daniel Mack , Felix Homann Cc: alsa-devel@alsa-project.org List-Id: alsa-devel@alsa-project.org Takashi Iwai wrote: > I myself find it's OK to apply since it's pretty local change. > Clemens, what was your objection at that time? No objection per se, I wanted to find out what descriptor field is changed by the quirk, and where the crashes come from exactly. The latter is still unclear, but it seems a quirk like this is required. I've committed the patch now. > > Also, the Interface Class protocol for the device defaults to Vendor > > Specific Class, but the driver only recognizes Class 1 or 2. The device > > is really Class 1, so we have to force it to reflect this. There are 4 > > places that we need to set this." Daniel, this seems to be a regression introduced with the UAC2 changes. The old driver accepted vendor-specific interfaces, if some quirk forced it to look at them. Regards, Clemens