Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750798AbVIDBxW (ORCPT ); Sat, 3 Sep 2005 21:53:22 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750794AbVIDBxW (ORCPT ); Sat, 3 Sep 2005 21:53:22 -0400 Received: from mx1.rowland.org ([192.131.102.7]:36880 "HELO mx1.rowland.org") by vger.kernel.org with SMTP id S1750798AbVIDBxV (ORCPT ); Sat, 3 Sep 2005 21:53:21 -0400 Date: Sat, 3 Sep 2005 21:53:19 -0400 (EDT) From: Alan Stern X-X-Sender: stern@netrider.rowland.org To: Jan De Luyck cc: USB Storage list , USB development list , Subject: Re: [linux-usb-devel] Genesys USB 2.0 enclosures In-Reply-To: <200509031812.54753.lkml@kcore.org> Message-ID: 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: 1153 Lines: 30 On Sat, 3 Sep 2005, Jan De Luyck wrote: > Hello lists, > > (a mail for the archives) > > I've posted in the past about problems with these enclosures - increasing the > delay seems to fix it, albeit temporarily. The further you go in using the > disk in such an enclosure, the higher the udelay() had to be - atleast that's > what I'm seeing here (I've got two of these now :/ ) > > One permanent fix is adding a powered USB-hub in between the drive enclosures > and the computer. Since I've done that, I've no longer seen any of the > problems (i've attached the 'fault' log). Weird but true, since the drives > come with their own powersupply. > > Hope this helps anyone in the future running into the same problem. This one certainly goes into the Bizarro file. Just out of curiosity -- when you use the powered hub, does the drive work even if you remove that delay completely? 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/