Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1762200AbYBNS4Q (ORCPT ); Thu, 14 Feb 2008 13:56:16 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756784AbYBNS4A (ORCPT ); Thu, 14 Feb 2008 13:56:00 -0500 Received: from vms173001pub.verizon.net ([206.46.173.1]:48349 "EHLO vms173001pub.verizon.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755783AbYBNSz7 (ORCPT ); Thu, 14 Feb 2008 13:55:59 -0500 Date: Thu, 14 Feb 2008 12:55:21 -0500 From: Gene Heskett Subject: Re: Handshaking on USB serial devices In-reply-to: <20080214163143.0915b44c@core> To: Alan Cox Cc: David Newall , Greg KH , linux-usb@vger.kernel.org, Linux Kernel Mailing List Message-id: <200802141255.22048.gene.heskett@gmail.com> Organization: Organization? very little MIME-version: 1.0 Content-type: text/plain; charset=iso-8859-1 Content-transfer-encoding: 7bit Content-disposition: inline References: <47B30291.2040905@davidnewall.com> <200802141116.14722.gene.heskett@gmail.com> <20080214163143.0915b44c@core> User-Agent: KMail/1.9.6 (enterprise 0.20071204.744707) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1397 Lines: 31 On Thursday 14 February 2008, Alan Cox wrote: >O> believe at several second intervals. I can cut those messages to about > >> weekly by using an FDTI adaptor in its place, or I can stop them entirely >> if > >Sorry don't see the connection between the two stories ? > >Alan The connection is that windows people don't see those errors, linux folks do. I believe, but don't know how to use the tools to verify it, that the first byte of a packet is being thrown away about .1% of the time for the pl2303, but I'm not sure if the FTDI driver still suffers from a similar rash. I have only one such FTDI adapter in the system atm, and its in series with manual heyu commands only, so it doesn't get regularly exercised. I figure it will do the least damage there. The pl2303's are all hanging on a peg waiting for emergency use only, they were just too much trouble when they miss-fire and the system issues -wall warnings several times per hour. -- Cheers, Gene "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) The revolution will not be televised. -- 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/