From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750944AbWGCVss (ORCPT ); Mon, 3 Jul 2006 17:48:48 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750983AbWGCVss (ORCPT ); Mon, 3 Jul 2006 17:48:48 -0400 Received: from cantor2.suse.de ([195.135.220.15]:65466 "EHLO mx2.suse.de") by vger.kernel.org with ESMTP id S1750944AbWGCVsr (ORCPT ); Mon, 3 Jul 2006 17:48:47 -0400 Date: Mon, 3 Jul 2006 14:45:09 -0700 From: Greg KH To: Daniel Bonekeeper Cc: Alon Bar-Lev , kernelnewbies@nl.linux.org, linux-kernel@vger.kernel.org Subject: Re: Driver for Microsoft USB Fingerprint Reader Message-ID: <20060703214509.GA5629@kroah.com> References: <9e0cf0bf0607030304n62991dafk19f09e41d69e9ab0@mail.gmail.com> <44A95F12.8080208@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.11 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org A: No. Q: Should I include quotations after my reply? On Mon, Jul 03, 2006 at 04:53:43PM -0400, Daniel Bonekeeper wrote: > hahahaha I wish I could... well, you are _always_ welcome to donate me > yours ! =P > I'll try more later to get one of those readers... > > Reading Greg's comment, now I'm in doubt if this should really be in > kernel mode or at userspace. Since there is no standard (AFAIK) for > those readers, how should it be done ? It all depends on what you want the userspace interface to be. > Another thing: where can I find documentation about the USB > architecture ? www.usb.org for the USB specs. See the kernel built-in documentation for a full document on how the Linux USB layer works. > For example, I suppose that some (or all) USB devices may have DMA > capabilities... how is this done ? Heh, no, USB can't do DMA at all. Why would you think they could? It's a serial bus that just streams data across it at relativly slow speeds. thanks, greg k-h