Re: Attache USB flash drive

From: Rob (stopspam_at_users.sourceforge.net)
Date: 05/30/04

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    Date: Sun, 30 May 2004 16:31:23 +0900
To: Brian Rogers <burpmaster@truffula.net>, freebsd-current@freebsd.org

    Brian Rogers wrote:
    > Rob wrote:
    >
    >> Brian Rogers wrote:
    >>
    >>> umass0: PNY Attache 2.0, rev 2.00/2.00, addr 2
    >>> umass0: BBB reset failed, TIMEOUT
    >>> umass0: BBB bulk-in clear stall failed, TIMEOUT
    >>> umass0: BBB bulk-out clear stall failed, TIMEOUT
    >>
    >>
    >> I've seen similar problems on one of my 4-stable PCs.
    >> Not being an expert on USB stuff, I googled a bit around and
    >> came to the conclusion that the VIA 83C572 USB controller is
    >> the reason of the problem. You also have that one.
    >> Mounting my USB mass storage toy as a umass device works fine,
    >> however, unmounting it hangs/freezes the whole system.
    >>
    >> Another 4-Stable PC of mine has an Intel 82801BA/BAM (ICH2) USB
    >> controller, and that works like a charm.
    >>
    >> If, by any chance, you've got another FreeBSD PC that has an
    >> Intell (or any other than VIA) USB controller, you may also
    >> see it work there.
    >>
    >> I haven't tried all this out with CURRENT, but I guess it has the
    >> same problems.
    >
    >
    > I just tried booting off the FreeBSD 5.2 install disc on my system. No
    > crash on removal, but I do get the same three repeating error messages
    > and still no device appears in /dev. Then I tried this boot disc on an
    > Intel (440BX) machine. No error messages, but still no /dev entry. I
    > must be seeing both an old VIA-related 4.X bug and a newer 5.X bug where
    > the device doesn't appear, which recently can also trigger a crash.
    >
    > Did you say that you can mount the filesystem, and it freezes when you
    > unmount it? What happens if you just unplug the device after plugging
    > it in? I don't have a way to mount it, but unplugging the device
    > crashes my system.

    Can't verify this, since I have ditched the USB mass storage toy
    already (borrowed it from a friend to see whether USB works on
    my FreeBSD PCs, with mixed results as you know).

    If I remember well, it is a no-no to unplug the device without
    first unmounting it. Unless you use amd for this, maybe.

    BTW: there seems to be very little response to these problems on
    the mailinglists. Either only few people have these problems
    (problems only rise with specific USB controllers?), and/or it
    has not a high priority fixing.

    Cheers,
    Rob.
    Rob.

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