Unknown symbols in module

Unknown symbols in module

[Srishti Sharma]

Hello,
I was trying to work with the iio dummy driver, and when I try to load
the iio_dummy_evgen.ko module I am getting unknown symbols found in
module error on running modprobe.

These variables are unknown
iio_bus_type
irq_sim_init
irq_sim_fini
irq_sim_fire
irq_sim_fini

All of these variables are present in the Module.symvers file in the
/lib/modules/<kernel version>/build directory. The kernel and the
modules versions match. I ran make clean, make, and make
modules_install before trying to load them. I am unable to figure out
the problem. Where I might be going wrong any ideas ?

Thanks,
Srishti

Re: Unknown symbols in module

[Jonathan Cameron]

On Mon, 5 Mar 2018 16:49:24 +0530
Srishti Sharma <srishtishar@gmail.com> wrote:

> Hello,
> I was trying to work with the iio dummy driver, and when I try to load
> the iio_dummy_evgen.ko module I am getting unknown symbols found in
> module error on running modprobe.
> 
> These variables are unknown
> iio_bus_type
> irq_sim_init
> irq_sim_fini
> irq_sim_fire
> irq_sim_fini
> 
> All of these variables are present in the Module.symvers file in the
> /lib/modules/<kernel version>/build directory. The kernel and the
> modules versions match. I ran make clean, make, and make
> modules_install before trying to load them. I am unable to figure out
> the problem. Where I might be going wrong any ideas ?
The required functions are built into the kernel - there is no option
to build them as a module. As such you'd need to also install the
kernel image in order to be able to probe the module.

The selected to be built when the dummy_evgen module is configured
to be built.

Jonathan

> 
> Thanks,
> Srishti
> --
> To unsubscribe from this list: send the line "unsubscribe linux-iio" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html