Build the modules by running "make", Load the first module and then second module using insmod.

To use modprobe
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sudo ln -s /<givefullpath>/module1.ko  /lib/modules/$(uname -r)/kernel/drivers/misc
sudo ln -s /<givefullpath>/module2.ko  /lib/modules/$(uname -r)/kernel/drivers/misc

sudo depmod -a

sudo modprobe module2

check lsmod, module1 should automatically be loaded.