Re: two serial devices.

[Nick M. <kno...@gm...>]

On 02/05/07, Rick Sterling <ric...@ho...> wrote:
>
> Nick,
>
> First off, thanks for answering my question.
>
> >In the past when controlling 2 different serial devices with the
> >lirc_serial kernel module you had to build a second instance of the
> >modules with non-conflicting name and major/minor device numbers.
> >Please see
> >http://losdos.dyndns.org:8080/public/mythtv-info/MythTV_DISH_IR_LED_TX_via_Modified_LIRC.html
> >for more information.
>
> I think is the route I will have to go as my disto only produces one
> lirc_serial module.  I checked out the link and noted the --with-major=72
> option used to compile the serial driver.  I take it 72 is a safe major
> number to use?

It still appears to be - I used this method to run 2 serial devices
with LIRC over a year ago now. You can check the current major/minor
listing for 2.6.x kernels at
ftp://ftp.kernel.org/pub/linux/docs/device-list/devices-2.6+.txt.

Majors 60-63 are reserved for local use - LIRC uses 61, so you could
use 62. I note from the device list that 72 is actually allocated to
other 'real' devices, but as long as you don't use them, you should be
OK.

Nick
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