Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758324AbZDWNMj (ORCPT ); Thu, 23 Apr 2009 09:12:39 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754026AbZDWNM0 (ORCPT ); Thu, 23 Apr 2009 09:12:26 -0400 Received: from smtp-out003.kontent.com ([81.88.40.217]:50930 "EHLO smtp-out003.kontent.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758324AbZDWNMX convert rfc822-to-8bit (ORCPT ); Thu, 23 Apr 2009 09:12:23 -0400 From: Oliver Neukum To: =?utf-8?q?Mar=C3=B3y_=C3=81kos?= Subject: Re: cdc-acm driver hangs on poll() call - 2.6.27, works on 2.6.24 Date: Thu, 23 Apr 2009 15:11:53 +0200 User-Agent: KMail/1.10.3 (Linux/2.6.27.7-9-default; KDE/4.1.3; x86_64; ; ) Cc: linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org References: <49EDC44D.90106@maroy.hu> <200904221514.34892.oliver@neukum.org> <49EF1AAC.3080802@maroy.hu> In-Reply-To: <49EF1AAC.3080802@maroy.hu> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8BIT Content-Disposition: inline Message-Id: <200904231511.54024.oliver@neukum.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 588 Lines: 20 Am Mittwoch 22 April 2009 15:25:00 schrieb Maróy Ákos: > Oliver, > > > That's odd. I can't tell from the log. Can you make a usbmon trace? > > sure: > > cat /sys/kernel/debug/usbmon/1u Please try setting ACM_NW in cdc-acm.h to 1. If that does not help, please provide an usbmon trace of that modified kernel and 2.6.24. 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/