Date: Mon, 19 Jul 2004 19:50:48 +0100 From: Ian Dowse <iedowse@maths.tcd.ie> To: Pawel Jakub Dawidek <pjd@FreeBSD.org> Cc: Scott Long <scottl@FreeBSD.org> Subject: Re: Unloading USB driver while device is attached. Message-ID: <200407191950.aa12733@salmon.maths.tcd.ie> In-Reply-To: Your message of "Mon, 19 Jul 2004 19:52:41 %2B0200." <20040719175241.GJ57678@darkness.comp.waw.pl>
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In message <20040719175241.GJ57678@darkness.comp.waw.pl>, Pawel Jakub Dawidek w rites: >So, as I see it, device should be totally detached before unload and >I susspect that something is missing in USB layer, not in all drivers. >That's why when I load a driver again, USB thinks it is somehow connected >to existing device, but it isn't. I'm not sure if it will help in this particular case, but I have a lot of local cleanups and improvements in the USB code. There's a large patch at http://people.freebsd.org/~iedowse/usb.diff but unfortunately I haven't had time to work on this lately (and there are all the problems of divergence from NetBSD etc. if bits of this get committed). The (small) uhub.c changes look like they might possibly help in your case. With the full patch I was able to `kldunload usb' without crashes a while ago, but there were still memory leaks. Ian
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