"Now compile the kernel: fakeroot make-kpkg --initrd -- revision=custom.1.0 kernel_image"
Running the above command results in the following error output:
Error: The revision string may only contain
alphanumerics and the characters ~ + .
If epochs are used, the colon : is also allowed
The current value is: custom.1.0
Aborting.
"--revision number The debian revision number. ([0-9][a-zA-Z.~+0-9]) (Must start with a digit)"