Re: 2.5.66-mm2-1 freezes solid after init PCMCIA

[Felipe Alfaro Solana <felipe_alfaro@linuxmail.org>]

On Tue, 2003-04-01 at 21:46, Russell King wrote:
> I was thinking that it could be due to the pci changes - that's one of
> the areas I've been working in recently which could have caused this.
> 
> However, I believe it is to do with the recent PCMCIA changes to use
> the device model, and deadlock within the device model itself.
> 
> What basically seems to be happening is this:
> 
> - the ds module is inserted
> - ds registers a driver model interface for pcmcia socket drivers,
>   which takes the global devclass_sem.
> - ds causes the pcmcia core to evaluate the status of the sockets, and
>   perform "card insertion" processing if cards are present.
> - this processing detects a cardbus card, and calls the cardbus code to
>   scan pci devices, and add them to the device tree.
> - each device gets passed to the device model's class layer, which tries
>   to take devclass_sem.  But wait!  We've locked it while initialising
>   the ds module -> deadlock.
> 
> I'm currently working on the card insertion/removal code which hopefully
> should fix this.  However, it's not going to be immediately available,
> so please be patient.

Ok, Russell, take your time... Meanwhile, I'll stick with 2.5.66-mm1 and
will try all upcoming patches to see if/when the deadlock is fixed.
Thanks :-)

________________________________________________________________________
        Felipe Alfaro Solana
   Linux Registered User #287198
http://counter.li.org