adding new driver to kernel src and building rpm

[Amadeus W.M.]

On Sun, 25 Jan 2015 17:26:55 +0100, poma wrote:

> On 25.01.2015 07:50, Amadeus W.M. wrote:
>> I'm trying to do the following:
>> 
>> 1) add the smi2021 driver for EasyCap Somagic usb frame grabbers into the 
>> kernel tree
>> 2) compile the kernel with smi2021 as a module
>> 3) build the rpm.
> 
> Why build the whole kernel for one module!?

I would certainly build just the smi2021 driver if I knew how to, but 
I followed the only instructions I could find for Fedora:

https://fedoraproject.org/wiki/Building_a_custom_kernel

How would I go about compiling just the module? The kernel source would have
to be patched, no?