Re: can't find interrupt number under /proc/interrupts for the pci multi-port on db1550

[Alan Cox <alan@lxorguk.ukuu.org.uk>]

On Maw, 2005-06-28 at 17:30, rolf liu wrote:
> but the number of interrupts for that driver is always 0, which seems
> not OK. I am wondering if such interrupt is routed to somewhere else? 

I'd expect it to stay zero unless characters were received or events
occurred. Something like

   (echo "Hello world"; cat ) <> /dev/ttywhatever

ought to cause interrupts 

[That bit of script writes Hello world to the serial port and then
copies anything from it back to it until you hit ^C]