[Bug 13426] booting with Prism2/2.5 PCMCIA card inserted crashes hard

[bugzilla-daemon at bugzilla.kernel.org]

http://bugzilla.kernel.org/show_bug.cgi?id=13426





--- Comment #11 from Wim Osterholt <wim at djo.tudelft.nl>  2010-01-21 23:10:59 ---
bugzilla-daemon at bugzilla.kernel.org zei ooit: 
>Date: Wed, 3 Jun 2009 03:42:47 GMT
>Subject: [Bug 13426] booting with Prism2/2.5 PCMCIA card inserted crashes hard
>In-Reply-To: <bug-13426-4844 at http.bugzilla.kernel.org/>
>
> http://bugzilla.kernel.org/show_bug.cgi?id=13426
> 
> 
> Andrew Morton <akpm at linux-foundation.org> changed:
> 
>            What    |Removed                     |Added
> ----------------------------------------------------------------------------
>                  CC|                            |daniel.ritz at gmx.ch
> 
> 
> 
> 
> --- Comment #8 from Andrew Morton <akpm at linux-foundation.org>  2009-06-03 03:42:45 ---
>
> OK, thanks.  It is indeed a PCMCIA bug.  Looks like we died in
> pcmcia_request_configuration().
> 

I'd say more specificly it's a hostap bug. Two bugs actually, because I
don't see their relationship.

The second bug, as recently reported, causes always a system crash when
inserting a PCMCIA card that loads hostap_cs, only if CONFIG_DEBUG_SHIRQ
is set. (It does not happen when inserting other cards.)

The first bug, as reported earlier, causes a system crash when a hostap_cs
loading card is present at boot time. Inserting the card after that point
in the boot stage will also cause a hard crash. Apparently there are several
places in the boot sequence where it is dangerous to have the card inserted.
Inserting at the login prompt always seems to be safe.
This bug now appears present as soon as CONFIG_ISA is set!

Unfortunately I must have ISA selected on my Thinkpad because the sound chip
is ISA based.   (My Dell is 'ISA free'.)

Regards,
Wim Osterholt.


----- wim at djo.tudelft.nl -----

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