Re: [PATCH] fix return value of i8042_aux_test_irq

[Alan Cox]

> The handler does handle the interrupt - both status and data registers
> are read so from the keyboard controller point of view the interrupt
> has been handled even if we happen to discard the data. As far as I
> know IRQ12 is never shared by BIOS... Vojtech, do you remember why we
> request IRQ12 with IRQF_SHARED?

A small number of boxes do share IRQ12 and it was switched to shared for
them. 

The debug check is an *aid* not a definitive proof of a problem
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