From: agc@weasel.demon.co.uk (Alan Charlton) Subject: Re: Changing a Serial Port IRQ Number Date: 17 Dec 1992 12:22:52 GMT
In article <1992Dec17.003953.24890@unislc.uucp> erc@unislc.uucp (Ed Carp) writes:
> Bill Woodward (wpwood@queball.austin.ibm.com) wrote:
>
> : How does one go about changing the IRQ that a specific serial port
> : uses. I have a modem on COM3 under DOS running with IRQ 5. When I
> : switch to Linux and boot, the bootup messages say that the IRQ for
> : /dev/ttys2 is 4. Is there a config file I am missing, or do I need
> : to recompile the kernel?
> : Any suggestions happily accepted.
>
> Either #undef the AUTO_IRQ stuff in kernel/chr_dev/serial.c, or use setserial
> to reset the IRQ for the card.
Or alternatively reset the IRQ values in the table of standard serial port parameters
about 50-odd lines down in serial.c. I did this and have had no problems. In fact
with AUTO-IRQ defined I get zmodem CRC errors and all sorts of other weird stuff.
Cheers,
Alan.
-- +---------------------------------+--------------------------------+ | Alan Charlton, Bristol, England | If B.U.R.D. doesn't spell Bird | | agc@cix.compulink.co.uk | - what the hell does it spell? | | agc@weasel.demon.co.uk | | | Tel: +44 454 202706 (after 6) | --- W. R. Hearst | +---------------------------------+--------------------------------+