From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756865AbXEQMsY (ORCPT ); Thu, 17 May 2007 08:48:24 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754757AbXEQMsQ (ORCPT ); Thu, 17 May 2007 08:48:16 -0400 Received: from pentafluge.infradead.org ([213.146.154.40]:34440 "EHLO pentafluge.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754656AbXEQMsP (ORCPT ); Thu, 17 May 2007 08:48:15 -0400 Date: Thu, 17 May 2007 05:45:25 -0700 From: Greg KH To: Jan Engelhardt Cc: ark3116_driver@auctionant.de, Linux Kernel Mailing List , linux-serial@vger.kernel.org, linux-usb-devel@lists.sourceforge.net Subject: Re: [linux-usb-devel] ark3116: receive returns negative Message-ID: <20070517124525.GC20055@kroah.com> References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.15 (2007-04-06) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Wed, May 16, 2007 at 06:04:45PM +0200, Jan Engelhardt wrote: > Hello, > > > I seem to have problems with the ark3116 driver from 2.6.18.8. This is a > USB-RS232 cable. Just opening the /dev/ttyUSB0 device > gives (this is the > debug output enabled by `modprobe ark3116 debug=1`). > > The lines that look suspicious are > /serial/ark3116.c: 124 < 1 bytes [0xFFFFFFB0] > and > /serial/ark3116.c: ark3116_ioctl cmd 0x5401 not supported Why is this suspicious? We don't support all ioctls for all usb-serial drivers, perhaps this one is just not really needed? > I have also seen things like "id here < -62 [0x10]", which would > indicate that usb_control_msg() returned something very negative > (-ETIME!?). But does the driver seem to work properly? > Issuing a write() on an open fd to ttyUSB does not generate any further > debug output. Is the driver even complete/functional? Do you get data through the device properly? thanks, greg k-h