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[rtl] Re: Problems with rt_com
On Tue, 10 Nov 1998 Manuel E. Acacio Snchez wrote:
>>Dear Jochen,
>
>I've just start working with RT-Linux two weeks ago, first of all I
>installed the patch (version 0.9) sucessfully in my Linux 2.0.35 kernel.
>After running some examples and programming others.
>
>I have tried to probe RT-Linux when working other computer using serial
>port. I've got rt_com module from your page, and I've compiled without
>problems. But when I try to load the module (with insmod command) I
>obtain the message:
>
> "rt_com: cannot request all port regions,
> rt_com: giving up
> device is busy..."
>
>I have not modified the struct rt_com_table, so I've tried to work with
>the 0x2f8 port...
Sounds like another driver requested the ports, ...
Probably you have compiled support for serial lines into your kernel, so that
driver (serial.o) does request all serialports it can get.
You can either remove serial line support from your kernel by reconfiguring it,
or you adjust the com_table in serial.c to match your needs.
Hope it helps,
Greetings,
Jochen
-----------------------------------------------------------------------
Jochen K"upper
Heinrich-Heine-Universit"at D"usseldorf jochen@uni-duesseldorf.de
Institut f"ur Physikalische Chemie I
Universit"atsstr. 1, Geb 26.43 Raum 02.29 phone ++49-211-8113681
40225 D"usseldorf fax ++49-211-8115195
Germany http://www-public.rz.uni-duesseldorf.de/~jochen
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