[PATCH 1/2] n2100: support assigning XINT1 to UART

[Russell King - ARM Linux]

On Mon, Sep 28, 2009 at 11:58:13AM +0200, Lennert Buytenhek wrote:
> Can't you detect whether the 8250 IRQ is routed at boot?  E.g. cause
> the UART to throw an interrupt, check the XINT, clear the interrupt,
> and check the XINT again, and see if the 8250 interrupt status
> corresponds to the XINT or not?  (And then printk the result of the
> detection.)

8250 already has support for auto-probing its interrupt.