Re: "serial" does not show up in /proc/interrupts

From: Stuart MacDonald (
Date: Mon Jul 30 2001 - 16:29:37 EST

From: "Thomas Hood" <>
> I am not using /dev/ttyS0 at the moment, so IRQ4 isn't listed
> as used. I assume that's normal. But I do have /dev/ttyS1

That is normal. serial.c unregisters the irq if it's no longer

> open; it uses IRQ3. But note that the name of the serial
> driver is not printed in the list. Why not?
> 3: 1979 XT-PIC

If you have it open, it should appear.

> Fishy!



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