From owner-freebsd-usb@FreeBSD.ORG  Fri Jun 28 09:10:01 2013
Return-Path: <owner-freebsd-usb@FreeBSD.ORG>
Delivered-To: freebsd-usb@smarthost.ysv.freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115])
 by hub.freebsd.org (Postfix) with ESMTP id CC5ABCE8
 for <freebsd-usb@smarthost.ysv.freebsd.org>;
 Fri, 28 Jun 2013 09:10:01 +0000 (UTC)
 (envelope-from gnats@FreeBSD.org)
Received: from freefall.freebsd.org (freefall.freebsd.org
 [IPv6:2001:1900:2254:206c::16:87])
 by mx1.freebsd.org (Postfix) with ESMTP id BC1691D0A
 for <freebsd-usb@smarthost.ysv.freebsd.org>;
 Fri, 28 Jun 2013 09:10:01 +0000 (UTC)
Received: from freefall.freebsd.org (localhost [127.0.0.1])
 by freefall.freebsd.org (8.14.7/8.14.7) with ESMTP id r5S9A19X061787
 for <freebsd-usb@freefall.freebsd.org>; Fri, 28 Jun 2013 09:10:01 GMT
 (envelope-from gnats@freefall.freebsd.org)
Received: (from gnats@localhost)
 by freefall.freebsd.org (8.14.7/8.14.7/Submit) id r5S9A1QP061786;
 Fri, 28 Jun 2013 09:10:01 GMT (envelope-from gnats)
Date: Fri, 28 Jun 2013 09:10:01 GMT
Message-Id: <201306280910.r5S9A1QP061786@freefall.freebsd.org>
To: freebsd-usb@FreeBSD.org
Cc: 
From: Hans Petter Selasky <hps@bitfrost.no>
Subject: Re: usb/179505: Kernel detaches Arduino Leonardo (and similar) board
 umodem after the arduino boots
X-BeenThere: freebsd-usb@freebsd.org
X-Mailman-Version: 2.1.14
Precedence: list
Reply-To: Hans Petter Selasky <hps@bitfrost.no>
List-Id: FreeBSD support for USB <freebsd-usb.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/options/freebsd-usb>,
 <mailto:freebsd-usb-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-usb>
List-Post: <mailto:freebsd-usb@freebsd.org>
List-Help: <mailto:freebsd-usb-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-usb>,
 <mailto:freebsd-usb-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Fri, 28 Jun 2013 09:10:01 -0000

The following reply was made to PR usb/179505; it has been noted by GNATS.

From: Hans Petter Selasky <hps@bitfrost.no>
To: Mike Meyer <mwm@mired.org>
Cc: freebsd-gnats-submit@FreeBSD.org
Subject: Re: usb/179505: Kernel detaches Arduino Leonardo (and similar) board
 umodem after the arduino boots
Date: Fri, 28 Jun 2013 11:09:07 +0200

 Hi Mike,
 
 I was not able to reproduce this issue yet. From the logs you sent I see:
 
 That the INTERRUPT endpoint is stalling:
 
 DONE-INTR-EP=00000084,SPD=FULL,NFR=1,SLEN=0,IVAL=1,ERR=STALLED
 
 Then the USB stack will try to clear the stall. And the clearing of 
 stall also fails:
 
 DONE-CTRL-EP=00000000,SPD=FULL,NFR=1,SLEN=0,IVAL=0,ERR=STALLED
 
 These messages are mandatory to implement per usb.org specifications. 
 And I know Linux and Windows does not use these very much. In other 
 words I looks like the Arduino could need some more USB certification!
 
 After a given amount of stalling, the FreeBSD USB stack will reset the 
 device, which gives you the re-enumeration you are observing.
 
 This case can be prevented by setting:
 
 sysctl hw.usb.no_cs_fail=1
 
 Then try again!
 
 --HPS