From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S964870Ab2CMA53 (ORCPT ); Mon, 12 Mar 2012 20:57:29 -0400 Received: from mail.windriver.com ([147.11.1.11]:47777 "EHLO mail.windriver.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758673Ab2CMAWh (ORCPT ); Mon, 12 Mar 2012 20:22:37 -0400 From: Paul Gortmaker To: stable@kernel.org, linux-kernel@vger.kernel.org Cc: stable-review@kernel.org, Jiri Slaby , =?UTF-8?q?R=C3=A9mi=20Denis-Courmont?= , "David S. Miller" , Paul Gortmaker Subject: [34-longterm 058/196] NET: cdc-phonet, handle empty phonet header Date: Mon, 12 Mar 2012 20:19:31 -0400 Message-Id: <1331598109-31424-13-git-send-email-paul.gortmaker@windriver.com> X-Mailer: git-send-email 1.7.9.3 In-Reply-To: <1331598109-31424-1-git-send-email-paul.gortmaker@windriver.com> References: <1331597724-31358-1-git-send-email-paul.gortmaker@windriver.com> <1331598109-31424-1-git-send-email-paul.gortmaker@windriver.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Jiri Slaby ------------------- This is a commit scheduled for the next v2.6.34 longterm release. If you see a problem with using this for longterm, please comment. ------------------- commit 468c3f924f043cad7a04f4f4d5224a2c9bc886c1 upstream. Currently, for N 5800 XM I get: cdc_phonet: probe of 1-6:1.10 failed with error -22 It's because phonet_header is empty. Extra altsetting looks like there: E 05 24 00 01 10 03 24 ab 05 24 06 0a 0b 04 24 fd .$....$..$....$. E 00 . I don't see the header used anywhere so just check if the phonet descriptor is there, not the structure itself. Signed-off-by: Jiri Slaby Cc: Rémi Denis-Courmont Cc: David S. Miller Acked-by: Rémi Denis-Courmont Signed-off-by: David S. Miller Signed-off-by: Paul Gortmaker --- drivers/net/usb/cdc-phonet.c | 9 +++------ 1 file changed, 3 insertions(+), 6 deletions(-) diff --git a/drivers/net/usb/cdc-phonet.c b/drivers/net/usb/cdc-phonet.c index dc94445..b18cda4 100644 --- a/drivers/net/usb/cdc-phonet.c +++ b/drivers/net/usb/cdc-phonet.c @@ -326,13 +326,13 @@ int usbpn_probe(struct usb_interface *intf, const struct usb_device_id *id) { static const char ifname[] = "usbpn%d"; const struct usb_cdc_union_desc *union_header = NULL; - const struct usb_cdc_header_desc *phonet_header = NULL; const struct usb_host_interface *data_desc; struct usb_interface *data_intf; struct usb_device *usbdev = interface_to_usbdev(intf); struct net_device *dev; struct usbpn_dev *pnd; u8 *data; + int phonet = 0; int len, err; data = intf->altsetting->extra; @@ -353,10 +353,7 @@ int usbpn_probe(struct usb_interface *intf, const struct usb_device_id *id) (struct usb_cdc_union_desc *)data; break; case 0xAB: - if (phonet_header || dlen < 5) - break; - phonet_header = - (struct usb_cdc_header_desc *)data; + phonet = 1; break; } } @@ -364,7 +361,7 @@ int usbpn_probe(struct usb_interface *intf, const struct usb_device_id *id) len -= dlen; } - if (!union_header || !phonet_header) + if (!union_header || !phonet) return -EINVAL; data_intf = usb_ifnum_to_if(usbdev, union_header->bSlaveInterface0); -- 1.7.9.3