Greetings all

meant tuner mod in title

I am trying to compile a module for a usb tv tuner I got. It is however giving me troubles. The module is written for Ubuntu 20.04.1 with a dependency on kernel 5.4.0. This is the newest version of the software. I am running Ubuntu 22.04.1 LTS with kernel 5.15.0-52-generic. When I follow the directions in the enclosed pdf I get this result:

make release
make -C /home/enesha/media_build_u20.04.1_ker5.4.0_lib_20210309/media_build_u20.04.1_ker5.4.0_lib/v4l release
make[1]: Entering directory '/home/enesha/media_build_u20.04.1_ker5.4.0_lib_20210309/media_build_u20.04.1_ker5.4.0_lib/v4l'
No version yet, using 5.15.0-52-generic
make[1]: Leaving directory '/home/enesha/media_build_u20.04.1_ker5.4.0_lib_20210309/media_build_u20.04.1_ker5.4.0_lib/v4l'

Which seems to have no troubles. Then I am advised to:

make
make -C /home/enesha/media_build_u20.04.1_ker5.4.0_lib/v4l
make[1]: Entering directory '/home/enesha/media_build_u20.04.1_ker5.4.0_lib/v4l'
Updating/Creating .config
make[2]: Entering directory '/home/enesha/media_build_u20.04.1_ker5.4.0_lib/linux'
/bin/sh: 1: ./patches_for_kernel.pl: Permission denied
Version 5.15.0-52-generic not supported
/bin/sh: 7: exit: Illegal number: -1
make[2]: *** [Makefile:132: apply_patches] Error 2
make[2]: Leaving directory '/home/enesha/media_build_u20.04.1_ker5.4.0_lib/linux'
make[1]: *** No rule to make target 'Kconfig', needed by '.myconfig'. Stop.
make[1]: Leaving directory '/home/enesha/media_build_u20.04.1_ker5.4.0_lib/v4l'
make: *** [Makefile:26: all] Error 2


It says my kernel is not supported and several errors about packages etc.

I do not have the headers for 5.4.0 to build against, and am unable to manage to get the headers installed

Am I just SOL for this and I need a new tuner or is there a way to bend this driver to my will? Surely if it'll build against the old kernel we can make it use the newer one, right?

EDIT = Ive been trying to look at the source files and I was checking out Makefile and I find this:
SRCDIR ?= /lib/modules/$(KERNELRELEASE)/source

I see that $(KERNELRELEASE) variable a lot. I can't seem to locate where that var gets set. I'm assuming maybe if I find it Ican change to the current kernel and it would compile against that?

Thanks in advance

no, it says permission denied. Probably you need to check that file and set the required permissions.