Messages in this thread | | | Date | Thu, 13 Mar 2014 10:29:17 +0100 | From | Maxime Ripard <> | Subject | Re: [PATCH v2 2/4] irqchip: sun4i: Fix irq 0 not working |
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On Wed, Mar 12, 2014 at 06:17:05PM +0100, Hans de Goede wrote: > SUN4I_IRQ_VECTOR_REG containing 0 can mean one of 3 things: > 1) no more irqs pending > 2) irq 0 pending > 3) spurious irq > > So if we immediately get a reading of 0, check the irq-pending reg > to differentiate between 2 and 3. We only do this once to avoid > the extra check in the common case of 1) hapening after having > read the vector-reg once. > > Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Maxime
-- Maxime Ripard, Free Electrons Embedded Linux, Kernel and Android engineering http://free-electrons.com [unhandled content-type:application/pgp-signature] | |