From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Tue, 21 May 2002 16:00:13 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Tue, 21 May 2002 16:00:12 -0400 Received: from quattro-eth.sventech.com ([205.252.89.20]:33039 "EHLO quattro.sventech.com") by vger.kernel.org with ESMTP id ; Tue, 21 May 2002 16:00:11 -0400 Date: Tue, 21 May 2002 16:00:12 -0400 From: Johannes Erdfelt To: "Maksim (Max) Krasnyanskiy" Cc: greg KH , linux-kernel@vger.kernel.org, linux-usb-devel@lists.sourceforge.net Subject: Re: [linux-usb-devel] RE: What to do with all of the USB UHCI drivers in the kernel ? Message-ID: <20020521160012.D2645@sventech.com> In-Reply-To: <5.1.0.14.2.20020521122422.06b21188@mail1.qualcomm.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5.1i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Tue, May 21, 2002, Maksim (Max) Krasnyanskiy wrote: > I'm gonna speak for Bluetooth USB devices. > I do have bunch of things like Kodak digi camera, Sony DV camcorder, CF > reader, etc. But they don't > seem to care much about which HCD is used and work equally well with both > usb-uhci and uhci drivers. > > I used to be a uhci driver fan :). But starting somewhere from 2.4.16 or so > Bluetooth devices work much better > with usb-uhci driver (not all devices but most of them). Even thought > Bluetooth is pretty slow (about 700kbps) > performance difference is sometimes pretty significant 20-30% (ie usb-uhci > driver is faster). > > So basically I vote for usb-uhci. However some things will have to be > fixed. We (Bluetooth folks) have couple > of devices that refuse to work with usb-uhci (I didn't test the latest > usb-uhci though). Please test the latest version of the drivers. Both uhci and usb-uhci have had various bug fixes. I'm sure the performance problems you've had with uhci have been fixed for a little while now. Also, feedback about the -hcd variants would useful too since one of those will be the only ones left for 2.5. JE