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Date:      Mon, 8 Apr 2002 01:04:42 -0400
From:      Coleman Kane <cokane@freebsd.org>
To:        Scott Long <scott_long@btc.adaptec.com>
Cc:        Josef Karthauser <joe@freebsd.org>, cvs-committers@freebsd.org, cvs-all@freebsd.org
Subject:   Re: cvs commit: src/sys/dev/usb uhci.c
Message-ID:  <20020408010442.A19063@shell.one.net>
In-Reply-To: <20020408035351.GA6762@hollin.btc.adaptec.com>; from scott_long@btc.adaptec.com on Sun, Apr 07, 2002 at 09:53:52PM -0600
References:  <200204071803.g37I3jj44027@freefall.freebsd.org> <20020408035351.GA6762@hollin.btc.adaptec.com>

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Just to give you all an update on the lockup issue, the XFree86 system locks
up during direct access to ums. If I use moused and run it through sysmouse, 
the system works fine. I don't know if that is any help or not.

--
coleman

Thus spoke Scott Long <scott_long@btc.adaptec.com>, and it was proclaimed:
> On Sun, Apr 07, 2002 at 11:03:45AM -0700, Josef Karthauser wrote:
> > joe         2002/04/07 11:03:45 PDT
> > 
> >   Modified files:
> >     sys/dev/usb          uhci.c 
> >   Log:
> >   MFNetBSD:
> >       revision 1.153
> >       date: 2002/02/11 11:40:33;  author: augustss;  state: Exp;  lines: +67 -26
> >       Switch to the same abort mechanism as in [eo]hci; it should be more
> >       robust.
> >   
> >   Revision  Changes    Path
> >   1.114     +67 -23    src/sys/dev/usb/uhci.c
> 
> Joe,
> 
> This change (or actually, this group of changes) changes the behaviour of
> the ums lockup problem.  Now, when I physically detach the device, the
> detach never completes in the ums driver.   I haven't tracked it down
> yet, but I suspect that ums_detach is never even being called.  In fact,
> usbdevs reports that the device is still connected.  However, if I
> kldunload the ums driver ums_detach does get called, and further down
> the abort callstack there is a panic.  I'll send you all of the relevant
> debugger info if you are interested.
> 
> Scott
> 

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