Re: insmod: unresolved symbol XIo_In32/XIo_Out32

On Fri, Jul 11, 2008 at 10:26:27AM -0400, Juliana Su wrote:

Hi,

Is anybody familiar with the following error?

insmod: unresolved symbol XIo_In32
insmod: unresolved symbol XIo_Out32

I am trying to write a device driver for a Custom IP and get it to run  
on a Xilinx ML310's Linux OS. I am using Xilinx EDK 10.1 and MontaVista  
Linux version 2.4.20_mvl31-ml300. I ran into this error when trying to  
load my module into the kernel. When I try to load the module using  
insmod on the ".o" file, the module refuses to load and gives me the  
unresolved symbol error message. I actually stumbled upon an older  
posting from June 2006 on this mailing list that described a similar  
problem, but those suggestions did not help me. Maybe two years later,  
there are more ideas/suggestions/solutions to this problem?

I can't help much with the 2.4 montavista kernel, but I can say that the
error means that the XIo_* helper routines are either not compiled into
the kernel or are not exported with EXPORT_SYMBOL().  The XIo_* routines
are hooks used by Xilinx cross platform device drivers to make the
actual accesses to hardware.  If they are not implemented, then you need
to create them yourself.

g.