From mboxrd@z Thu Jan 1 00:00:00 1970 From: Clemens Ladisch Subject: Re: Buffer size for ALSA USB PCM audio Date: Mon, 29 Jul 2013 19:12:02 +0200 Message-ID: <51F6A262.6010800@ladisch.de> References: Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: Sender: linux-usb-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Alan Stern Cc: Daniel Mack , alsa-devel-K7yf7f+aM1XWsZ/bQMPhNw@public.gmane.org, USB list List-Id: alsa-devel@alsa-project.org Alan Stern wrote: > Clemens remarked some time ago that keeping the queue full would be > trivial, if only he knew how full it needed to be. The answer to that > is given above. I have been trying to make the appropriate changes, > but I'm not finding it "trivial". What I meant was that it would be trivial to change the lower bound of the period size (from which many queueing parameters are derived). > The current driver seems to assume that endpoints with an _implicit_ > feedback endpoint won't have variable-length packets. That's likely to be a bug. Regards, Clemens -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html