Problem in First-Patch-Tutorial

Reloading Modules

make -j2 && sudo make modules_install
sudo modprobe -r <module_name>
sudo modprobe <module_name>

In Reloading Modules I tried the first command it works fine for me.

git/kernels/staging$ ls drivers/iio/dummy/*.ko
drivers/iio/dummy/iio_dummy_evgen.ko  drivers/iio/dummy/iio_dummy.ko

Then I tried to run second-command

git/kernels/staging$ sudo modprobe -r iio_dummy_evgen

I got the following error:-
modprobe: FATAL: Module iio_dummy_evgen not found.

I am not getting what is wrong with this.