Re: [RFC] New Driver Model for 2.5

[Alan Cox]

> >Sound is more easily handled by not blocking user space but waiting until
> >the final IRQ off moment and grabbing the registers. That avoids a lot
> >of ugly locking gunge. It literally comes down to
> 
> My point about using a semaphore was to avoid getting mixer ioctls
> banging the HW while it is shut down.

Yes I can follow that - you want to avoid the aclink being shut down while
active. That seems to be just part of the ordering. I'd also put the ac97
save/restore in the ac97_codec.c stuff - lets write it once 8)