Port configuration of lirc_serial

[bobhope2112 <bob...@ne...>]

Hello all.  I'm a bit of a neophyte, so I hope you'll be kind.

I've been trying to setup a MythTV pc using Mythbuntu 8.10.  I've been able
to do that, including a homebrew serial IR receiver.  The guide I used to
build the hardware, and to install LIRC is here:
<http://lnx.manoweb.com/lirc/?partType=section&partName=lirc>  Although it
appears a little dated, it did allow me to easily get some response from my
new IR receiver.  (Getting it plugged into mythtv took a bit more.)

The problem comes now that I want to use my second COM port for the IR
receiver.  Assuming that port is ok, I thought it would be as simple as
running the LIRC setup and recompiling lirc_serial, but that's not working. 
setup.sh does seem aware of my that I want to use ttyS1 instead of ttyS0. 
The makes appear to run ok.  I can setserial /dev/ttyS1 uart none, and the
setserial -g shows that it is working.

When I try to insert lirc_serial with modprobe, I get a fatal error because
a device or resource is busy.  It turns out that resource is ttyS0.  If I
setserial /dev/ttyS0 uart none, modprobe works.  Hooking my receiver up to
ttyS0 and running mode2 shows that the receiver and lirc_serial are working,
just on the wrong port.

What am I missing here?
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