[PATCH] arm/arm64: vgic: Remove unreachable irq_clear_pending

Christoffer Dall christoffer.dall at linaro.org
Mon Nov 24 04:52:46 PST 2014


On Mon, Nov 24, 2014 at 12:04:11PM +0000, Andre Przywara wrote:
> Hej Christoffer,
> 
> On 24/11/14 09:41, Christoffer Dall wrote:
> > When 'injecting' an edge-triggered interrupt with a falling edge we
> > shouldn't clear the pending state on the distributor.  In fact, we
> > don't, because the check in vgic_validate_injection would prevent us
> > from ever reaching this bit of code.
> > 
> > Remove the unreachable snippet.
> > 
> > Signed-off-by: Christoffer Dall <christoffer.dall at linaro.org>
> 
> Acked-by: Andre Przywara <andre.przywara at arm.com>
> 
> I agree on this. Would it make sense to rewrite this function a bit to
> make it more clearer what happens? I find the nesting of the
> if-statements counter-intuitive: I'd prefer to first differentiate
> between level and edge triggered and then only check the actual level in
> the level-triggered branch. Not sure if it's worth the fuss, though.
> 
I disagree, and it's not ;)

-Christoffer



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