From owner-freebsd-usb@FreeBSD.ORG Sat Jun 17 19:14:28 2006 Return-Path: X-Original-To: freebsd-usb@freebsd.org Delivered-To: freebsd-usb@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id AB22116A549 for ; Sat, 17 Jun 2006 19:14:28 +0000 (UTC) (envelope-from imp@bsdimp.com) Received: from harmony.bsdimp.com (vc4-2-0-87.dsl.netrack.net [199.45.160.85]) by mx1.FreeBSD.org (Postfix) with ESMTP id E95CD43D5F for ; Sat, 17 Jun 2006 19:14:26 +0000 (GMT) (envelope-from imp@bsdimp.com) Received: from localhost (localhost.village.org [IPv6:::1] (may be forged)) by harmony.bsdimp.com (8.13.4/8.13.4) with ESMTP id k5HJBsoN008012; Sat, 17 Jun 2006 13:11:55 -0600 (MDT) (envelope-from imp@bsdimp.com) Date: Sat, 17 Jun 2006 13:12:08 -0600 (MDT) Message-Id: <20060617.131208.1589021232.imp@bsdimp.com> To: mainland@apeiron.net From: "M. Warner Losh" In-Reply-To: References: <20060616.170242.1467007423.imp@bsdimp.com> X-Mailer: Mew version 4.2 on Emacs 21.3 / Mule 5.0 (SAKAKI) Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Cc: freebsd-usb@freebsd.org Subject: Re: ucom/uftdi dropping bytes, with debug logs X-BeenThere: freebsd-usb@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: FreeBSD support for USB List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 17 Jun 2006 19:14:28 -0000 In message: Geoffrey Mainland writes: : The fact that this runs fine under VMWare makes me strongly suspect a : timing issue that is fixed by some sort of buffering at the VMWare : level. Where should I start to look to hack something in to test this? : The ucom driver seems to be setting up the read transfers that don't : complete on time. I'd start looking into ucom.c and uftdi.c. Warner