Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1764276AbXFSS5Y (ORCPT ); Tue, 19 Jun 2007 14:57:24 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1763836AbXFSS5O (ORCPT ); Tue, 19 Jun 2007 14:57:14 -0400 Received: from smtp-out001.kontent.com ([81.88.40.215]:53235 "EHLO smtp-out.kontent.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1763006AbXFSS5N convert rfc822-to-8bit (ORCPT ); Tue, 19 Jun 2007 14:57:13 -0400 From: Oliver Neukum To: Paul Walmsley Subject: Re: [linux-usb-devel] Error -71 on device descriptor read/all Date: Tue, 19 Jun 2007 20:56:50 +0200 User-Agent: KMail/1.9.7 Cc: linux-usb-devel@lists.sourceforge.net, Chuck Ebbert , "Renato S. Yamane" , linux-kernel@vger.kernel.org References: <4677EBF8.5020104@mandic.com.br> <200706191902.08173.oliver@neukum.org> In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 8BIT Content-Disposition: inline Message-Id: <200706192056.50656.oliver@neukum.org> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 989 Lines: 29 Am Dienstag, 19. Juni 2007 schrieb Paul Walmsley: > On Tue, 19 Jun 2007, Oliver Neukum wrote: > > > Am Dienstag, 19. Juni 2007 schrieb Chuck Ebbert: > > > >> Try disabling CONFIG_USB_SUSPEND > >> > >> [usb developers: what are the drawbacks of doing this?] > > > > Increased power consumption. > > speaking of CONFIG_USB_SUSPEND, I've encountered at least one device -- a > Canon EOS 5D camera -- that, after the bus suspends, must be powercycled > in order to return the camera's interrupt endpoints to a functional state. > How are these types of problems handled, currently? ?Is this something for > a blacklist? drivers/usb/core/quirks.c Please try the reset-resume quirk before you use the no-autosuspend quirk. Regards Oliver - 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/