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

To: rolf liu <rolfliu@gmail.com>
Subject: Re: can't find interrupt number under /proc/interrupts for the pci multi-port on db1550
From: Alan Cox <alan@lxorguk.ukuu.org.uk>
Date: Tue, 28 Jun 2005 18:52:25 +0100
Cc: linux-mips@linux-mips.org
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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]


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