From owner-freebsd-usb@FreeBSD.ORG  Fri Jun 28 17:20:02 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 94D557CE
 for <freebsd-usb@smarthost.ysv.freebsd.org>;
 Fri, 28 Jun 2013 17:20:02 +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 86E7E19F7
 for <freebsd-usb@smarthost.ysv.freebsd.org>;
 Fri, 28 Jun 2013 17:20:02 +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 r5SHK200060545
 for <freebsd-usb@freefall.freebsd.org>; Fri, 28 Jun 2013 17:20:02 GMT
 (envelope-from gnats@freefall.freebsd.org)
Received: (from gnats@localhost)
 by freefall.freebsd.org (8.14.7/8.14.7/Submit) id r5SHK2Tv060544;
 Fri, 28 Jun 2013 17:20:02 GMT (envelope-from gnats)
Date: Fri, 28 Jun 2013 17:20:02 GMT
Message-Id: <201306281720.r5SHK2Tv060544@freefall.freebsd.org>
To: freebsd-usb@FreeBSD.org
Cc: 
From: Mike Meyer <mwm@mired.org>
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: Mike Meyer <mwm@mired.org>
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 17:20:02 -0000

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

From: Mike Meyer <mwm@mired.org>
To: Hans Petter Selasky <hps@bitfrost.no>
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 12:15:40 -0500

 On Fri, Jun 28, 2013 at 4:09 AM, Hans Petter Selasky <hps@bitfrost.no> wrote:
 > 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
 
 Hi Hans,
 
 Thanks for looking into this.
 
 Unfortunately, it didn't solve the problem for me. The leonardo still
 creates the umodem devices, then detaches them as the IPL finish.