Re: [PATCH] gpio: 104-idi-48: Clear pending interrupt once in IRQ handler

[Linus Walleij <linus.walleij@xxxxxxxxxx>]

On Wed, Dec 16, 2015 at 12:52 AM, William Breathitt Gray
<vilhelm.gray@xxxxxxxxx> wrote:

> Performing a read operation on the IRQ Status register will clear the
> IRQ latch. Since a read operation on the IRQ Status register must be
> performed in the IRQ handler in order to determine if the IRQ was in
> fact generated by the device, the IRQ latch is consequently cleared by
> the IRQ handler. A spinlock is used to guarantee that each IRQ is
> serviced in the order it was received.
>
> Signed-off-by: William Breathitt Gray <vilhelm.gray@xxxxxxxxx>

Patch applied!

Yours,
Linus Walleij
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