[microblaze-uclinux] why intr->ack() is null?

[Yasushi SHOJI <yashi@xxxxxxxxxxxxxxxxx>]

Hi John,

# sorry for the bounce

Could you elaborate me on the following comment from irq.c?

	/* This is to acknolwedge receipt of the IRQ.   In microblaze
	   this is null - we don't wan't to ack until after handling.
	   We do this in the handler->end(irq) call */
	desc->handler->ack(irq);

and microblaze_intc.c:

/* For now, don't ack interrupt until end of interrupt processing */
/* Same uncertainty exists in PPC xintc driver */
#define ACKNOWLEDGE_AFTER

IMO, it'd be nice to ack as fast as possible. what am I missing?

I couldn't find refered xintc.  Is there mailing list archive or
something that I can dig?
--
        yashi
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