From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757853AbYDCNPK (ORCPT ); Thu, 3 Apr 2008 09:15:10 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755040AbYDCNO5 (ORCPT ); Thu, 3 Apr 2008 09:14:57 -0400 Received: from mailrelay001.isp.belgacom.be ([195.238.6.51]:33579 "EHLO mailrelay001.isp.belgacom.be" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753565AbYDCNO4 (ORCPT ); Thu, 3 Apr 2008 09:14:56 -0400 X-Belgacom-Dynamic: yes Subject: [PATCH] usbcore, kernel 2.6.18.1 From: Gerd Luyten To: linux-kernel@vger.kernel.org Content-Type: text/plain Date: Thu, 03 Apr 2008 15:14:54 +0200 Message-Id: <1207228494.8542.9.camel@workstation.dyn.nu> Mime-Version: 1.0 X-Mailer: Evolution 2.0.4 (2.0.4-7) Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This patch is to eventually detect a Velleman K8055 USB device. Without the patch it will fail detection with following errors: usb 1-2: can't read configurations, error -110 => probably because of usb non-conformance reason of the K8055 card. (timing issues...) With this patch, detection will keep on trying until usb card gets recognized. This patch adds a device reset in the "fail:" sequence instead of just marking the device state as NOTATTACHED. [gluyten@workstation pup214]$ diff -u linux-2.6.18.1/drivers/usb/core/hub.c hub.c --- linux-2.6.18.1/drivers/usb/core/hub.c 2006-10-14 05:34:03.000000000 +0200 +++ hub.c 2008-04-03 14:47:49.000000000 +0200 @@ -1450,7 +1450,9 @@ return 0; fail: - usb_set_device_state(udev, USB_STATE_NOTATTACHED); +// usb_set_device_state(udev, USB_STATE_NOTATTACHED); + usb_lock_device_for_reset(udev, NULL); + usb_reset_composite_device(udev, NULL); return err; } -- Gerd Luyten