Date: Mon, 08 Sep 2014 14:40:08 -0600 From: Ian Lepore <ian@FreeBSD.org> To: Hans Petter Selasky <hps@selasky.org> Cc: freebsd-hackers@freebsd.org Subject: Re: What to do if USB stack seems dead Message-ID: <1410208808.1150.406.camel@revolution.hippie.lan> In-Reply-To: <540B7AC4.9060504@selasky.org> References: <1455331.JKPkSxLmbq@quad> <540B7AC4.9060504@selasky.org>
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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
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