Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753616AbbKGPJr (ORCPT ); Sat, 7 Nov 2015 10:09:47 -0500 Received: from netrider.rowland.org ([192.131.102.5]:52672 "HELO netrider.rowland.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1750856AbbKGPJp (ORCPT ); Sat, 7 Nov 2015 10:09:45 -0500 Date: Sat, 7 Nov 2015 10:09:44 -0500 (EST) From: Alan Stern X-X-Sender: stern@netrider.rowland.org To: Doug Anderson cc: John Youn , Felipe Balbi , Yunzhi Li , =?UTF-8?Q?Heiko_St=C3=BCbner?= , "open list:ARM/Rockchip SoC..." , Julius Werner , "Herrero, Gregory" , "Kaukab, Yousaf" , Dinh Nguyen , John Youn , Greg Kroah-Hartman , "linux-usb@vger.kernel.org" , "linux-kernel@vger.kernel.org" , Ming Lei Subject: Re: [PATCH 2/3] usb: dwc2: host: Giveback URB in tasklet context In-Reply-To: Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1039 Lines: 24 On Fri, 6 Nov 2015, Doug Anderson wrote: > You're talking to someone who has only been looking at the details of > USB for about 2 days now. :-P ...I'm trying to grok all of that, but > I'm not sure I got it all... > > I will say that "URB_ISO_ASAP" is not referenced anywhere in dwc2. > Presumably that's a bug (or missing feature). Would it be terrible if > I just ignored that for now and said that if you try to add something > to the queue and we're currently in the process of waiting for our > timer to expire then you'll just get back -ENOSPC? dwc2 won't deal > perfectly well if you've very close to exhausting the available > bandwidth, but that could be a task for another day. Sure. It's not necessary to support everything perfectly, right from the beginning. Alan Stern -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/