From owner-freebsd-hackers@FreeBSD.ORG Mon Sep 8 20:40:13 2014 Return-Path: Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 6888ED13 for ; Mon, 8 Sep 2014 20:40:13 +0000 (UTC) Received: from mho-02-ewr.mailhop.org (mho-02-ewr.mailhop.org [204.13.248.72]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 3C52A194D for ; Mon, 8 Sep 2014 20:40:13 +0000 (UTC) Received: from [73.34.117.227] (helo=ilsoft.org) by mho-02-ewr.mailhop.org with esmtpsa (TLSv1:AES256-SHA:256) (Exim 4.72) (envelope-from ) id 1XR5jP-000Kuz-9C; Mon, 08 Sep 2014 20:40:11 +0000 Received: from [172.22.42.240] (revolution.hippie.lan [172.22.42.240]) by ilsoft.org (8.14.9/8.14.9) with ESMTP id s88Ke9JU022103; Mon, 8 Sep 2014 14:40:09 -0600 (MDT) (envelope-from ian@FreeBSD.org) X-Mail-Handler: Dyn Standard SMTP by Dyn X-Originating-IP: 73.34.117.227 X-Report-Abuse-To: abuse@dyndns.com (see http://www.dyndns.com/services/sendlabs/outbound_abuse.html for abuse reporting information) X-MHO-User: U2FsdGVkX1+IBWTMUXzEjIUcwDjmAbNp X-Authentication-Warning: paranoia.hippie.lan: Host revolution.hippie.lan [172.22.42.240] claimed to be [172.22.42.240] Subject: Re: What to do if USB stack seems dead From: Ian Lepore To: Hans Petter Selasky In-Reply-To: <540B7AC4.9060504@selasky.org> References: <1455331.JKPkSxLmbq@quad> <540B7AC4.9060504@selasky.org> Content-Type: text/plain; charset="us-ascii" Date: Mon, 08 Sep 2014 14:40:08 -0600 Message-ID: <1410208808.1150.406.camel@revolution.hippie.lan> Mime-Version: 1.0 X-Mailer: Evolution 2.32.1 FreeBSD GNOME Team Port Content-Transfer-Encoding: 7bit Cc: freebsd-hackers@freebsd.org X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 08 Sep 2014 20:40:13 -0000 On Sat, 2014-09-06 at 23:21 +0200, Hans Petter Selasky wrote: > On 09/06/14 21:57, Maxim V FIlimonov wrote: > > Lately, I've been heavily experimenting with different USB devices (for > > instance, USB to TTL one, but that's another story), and at a moment I > > encountered that the system doesn't react on new USB devices connected. The > > connected devices work fine, though. The question is: what can I do in such a > > case if I don't want to reboot my box? > > > > Hi, > > If a TTY port is not closed, it will prevent other USB devices on that > particular USB controller from enumerating. > > --HPS What does that mean, "is not closed"? You mean if I have any usb-serial adapter tty device open, other device insert/remove events aren't handled? Or that if a usb-serial device is removed while the device is open, that prevents other insert/remove events? -- Ian