Re: [MIPS] irq_cpu: use handle_percpu_irq handler to avoid dropping interrupts.

[Ralf Baechle <ralf@linux-mips.org>]

On Thu, Nov 22, 2007 at 04:19:35PM +0000, Ralf Baechle wrote:

> > This might broke probe_irq_on()/probe_irq_off(), since
> > handle_percpu_irq() does not check IRQ_WAITING bit.
> 
> Ok - but does that matter at all?  IRQ probing is only used with ISA
> drivers and for those there will be another interrupt controller such as
> a i8259 PIC daisy chained to one of the CPU interrupt pins.

Ah, I think I now understand the problem.

Seems like no interrupt should ever use IRQ_NOPROBE except ISA interrupts
but unfortunately that flag is not everywhere where it should.  Maybe the
logic should even be negated and the flag become IRQ_PROBE ...

  Ralf