panic when removing pccard

Hans Petter Selasky hselasky at c2i.net
Mon Jun 11 07:02:18 UTC 2007


On Friday 08 June 2007 20:11, M. Warner Losh wrote:
> In message: <200706081220.34991.hselasky at c2i.net>
>
>             Hans Petter Selasky <hselasky at c2i.net> writes:
> : On Friday 08 June 2007 10:31, Niki Denev wrote:
> : > -----BEGIN PGP SIGNED MESSAGE-----
> : > Hash: SHA1
> : >
> : > I experience the following panic on a few days old -current :
> : >
> : > If i insert and then remove a pcmcia card using the ubsa module
> : > (Vodafone Mobile Connect, which actually is Huawei E630 UMTS/HSDPA
> : > modem) the machine panics, because i think the order of removal of the
> : > devices by the kernel is not correct. I'm not sure because i don't have
> : > -STABLE machine with pcmcia now, but i think this problem does not
> : > exist there.
> : >
> : > Here is what happens when card is inserted :
> :
> : Hi!
> :
> : If you want to be able to remove the card you need to install the new USB
> : stack. The old USB stack is completely broken when it comes to this
> : point!
>
> My experiences with the old stack differ.  I've done this many times
> without ill effect for my usb 2.0 cards and my combo usb 2.0/Firewire
> cards.  What's the specific problem with the old stack?

If you replug a PCMCIA USB device multiple times, will you not end up with 
multiple USB ghost devices under /dev? Or has this been fixed?

--HPS


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