[rt2x00-users] Unknown Symbol!

Mohammad Abdelhadi moh.jaser at ieee.org
Tue Jul 20 02:29:12 AEST 2010


On Mon, Jul 19, 2010 at 7:20 PM, Ivo Van Doorn <ivdoorn at gmail.com> wrote:

> On Mon, Jul 19, 2010 at 6:13 PM, Mohammad Abdelhadi <moh.jaser at ieee.org>
> wrote:
> >
> >
> > On Sun, Jul 18, 2010 at 8:03 PM, Ivo Van Doorn <ivdoorn at gmail.com>
> wrote:
> >>
> >> Hi,
> >> > On Sun, Jul 18, 2010 at 7:45 PM, Ivo Van Doorn <ivdoorn at gmail.com>
> >> > wrote:
> >> >>
> >> >> > I am trying to call the function ( EnqueueChSwAnn ) which is
> written
> >> >> > in
> >> >> > the
> >> >> > file ~/common/spectrum.c. I am trying to call it from my code that
> is
> >> >> > written in different module in ~/common/rtmp_init.c. But, when I do
> >> >> > (modprobe rt3572sta), i always get " Unknown Symbol :
> EnqueueChSwAnn.
> >> >> > I
> >> >> > also
> >> >> > tried to call it using function pointers method, but that also
> didn't
> >> >> > work!
> >> >> > (I am using 2010_06_25_RT3572_Linux_STA_v2.4.0.0 driver).
> >>
> >> All functions which you want to be available in different modules must
> >> never
> >> be staticly defined. Secondly the symbol must be exported to be
> available.
> >> In the kernel there is a macro which handles it for you:
> >> EXPORT_SYMBOL
> >>
> >> To export a function called EnqueueChSwAnn you have to add:
> >>
> >> EXPORT_SYMBOL(EnqueueChSwAnn);
> >>
> >> in the ralink module.
> >>
> >> Ivo
> >
> >
> > Hi Ivo,
> >
> > Thanks for your kindest reply, well I did export the symbol after I made
> > sure that the function is not staticly defined but unfortunately this way
> > didn't work, I even tried to call that function using a function pointer
> but
> > that didn't work too. So, do you have any further ideas about how to
> solve
> > this case?
> >
> > Thank you in advance...
>
> How are you compiling your module?
> Check the Ralink Makefile to see how to compile against the kernel
> (and its modules).
>
> Ivo
>

Hi,

Could you please explain how is that related to my issue? Sorry but, I
didn't get you!
The driver I work on is in /usr/src/
so I do:
- make
-make install
-modprobe rt3572sta
and I get the Unknown symbol when I do the modprobe.

Regards,
-- 
Mohammad
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://rt2x00.serialmonkey.com/pipermail/users_rt2x00.serialmonkey.com/attachments/20100719/4e4bd07f/attachment-0002.html>


More information about the users mailing list