On Mon, Mar 11, 2002 at 10:49:02PM +0000, David Laight wrote:
> What is wrong with the 'alternate' status register?
> (returns the same as the status register but without
> clearing the IRQ).

Not all controllers provide it :(

> OTOH is is perfectly possible to write an ATA driver
> that will never unintentionally clear an IRQ.
> 
> Also, the interrupt loop would be caused by FAILING to
> remove an IRQ, not by removing one when it shouldn't be.

Yes, but you can also remove one when you shouldn't, and this can lead to a
lost interrupt.

--
Manuel Bouyer, LIP6, Universite Paris VI.           Manuel.Bouyer@lip6.fr
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