Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262503AbVBXVtJ (ORCPT ); Thu, 24 Feb 2005 16:49:09 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262508AbVBXVtI (ORCPT ); Thu, 24 Feb 2005 16:49:08 -0500 Received: from mail.stdbev.com ([63.161.72.3]:997 "EHLO mail.standardbeverage.com") by vger.kernel.org with ESMTP id S262503AbVBXVsq (ORCPT ); Thu, 24 Feb 2005 16:48:46 -0500 Message-ID: <0c34ba38852752faa146731da6825252@stdbev.com> Date: Thu, 24 Feb 2005 15:48:49 -0600 From: "Jason Munro" Subject: Re: USB 2.0 Mass storage device To: Lukas Hejtmanek Cc: , , Reply-to: In-Reply-To: <20050224213853.GA8646@mail.muni.cz> References: <20050224175918.GA7627@mail.muni.cz> <20050224181347.GA10847@kroah.com> <20050224182300.GA7778@mail.muni.cz> <20050224184928.GA11490@kroah.com> <20050224190548.GA7978@mail.muni.cz> <20050224191243.GD11806@kroah.com> <20050224191809.GB7978@mail.muni.cz> <20050224192207.GB12018@kroah.com> <421E34B1.9050803@tiscali.de> <20050224211512.GC24969@kroah.com> <20050224213853.GA8646@mail.muni.cz> X-Mailer: Hastymail 1.3-CVS x-priority: 3 MIME-Version: 1.0 Content-type: text/plain; charset=us-ascii Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1882 Lines: 46 On 3:38:53 pm 02/24/05 Lukas Hejtmanek wrote: > This is another device (Card reader) supporting USB 2.0. > > In this case I used only uhci_hcd driver and it reports speed 12. > > T: Bus=04 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#= 3 Spd=12 MxCh= 0 > D: Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1 > P: Vendor=05dc ProdID=b018 Rev= 1.28 > S: Manufacturer=Lexar Media > S: Product=Multi-Card Reader > S: SerialNumber=0000246504 > C:* #Ifs= 1 Cfg#= 1 Atr=80 MxPwr=500mA > I: If#= 0 Alt= 0 #EPs= 2 Cls=08(stor.) Sub=06 Prot=50 > Driver=usb-storage E: Ad=81(I) Atr=02(Bulk) MxPS= 64 Ivl=0ms > E: Ad=02(O) Atr=02(Bulk) MxPS= 64 Ivl=0ms > > In this case I used both ehci_hcd and uhci_hcd drivers (ehci detected > device) and it reports speed 480. > > T: Bus=01 Lev=01 Prnt=01 Port=04 Cnt=01 Dev#= 2 Spd=480 MxCh= 0 > D: Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1 > P: Vendor=05dc ProdID=b018 Rev= 1.28 > S: Manufacturer=Lexar Media > S: Product=Multi-Card Reader > S: SerialNumber=0000246504 > C:* #Ifs= 1 Cfg#= 1 Atr=80 MxPwr=500mA > I: If#= 0 Alt= 0 #EPs= 2 Cls=08(stor.) Sub=06 Prot=50 > Driver=usb-storage E: Ad=81(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms > E: Ad=02(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms > > So for me it looks like it reports speed according to USB driver or > negotiated speed. Same here with a new Seagate external USB 2.0 drive. If plugged into my laptop which does not have USB 2.0 it shows 12 in /dev/bus/usb/devices, however on a machine with USB 2.0 support it changes to 480. \__ Jason Munro \__ jason@stdbev.com \__ http://hastymail.sourceforge.net/ - 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/