Messages in this thread | | | Date | Tue, 20 Oct 2015 15:17:36 +0100 | From | Russell King - ARM Linux <> | Subject | Re: [PATCH 0/5] Fix regression introduced by set_irq_flags() removal |
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On Tue, Oct 20, 2015 at 04:08:28PM +0200, Thomas Petazzoni wrote: > As discussed on IRC, another simpler (code line wise) solution is to > simply clear the IRQ_NOAUTOEN flag in the irq-armada-370-xp, which > brings us back to what set_irq_flags() was doing, without actually > reverting Rob's patch. > > However, relying on IRQ_NOAUTOEN being cleared doesn't seem like the > right long term solution, which is why I implemented what I believe is > a (hopefully) better long term solution.
However, this is rather worrying. NOAUTOEN is supposed to avoid enabling the interrupt when the interrupt is claimed.
If, as a result of Rob's patch, we now have a load of IRQs which are marked with NOAUTOEN which weren't, that's quite a large regression - possibly one which hasn't been properly found (not everyone tests -rc kernels) and we may be better to revert Rob's patch to avoid lots of breakge being reported when 4.3 is released.
I think Rob's patches need another review in light of this, to determine how much breakage there is here, and a decision how to proceed made on that basis.
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