Re: [PATCH v2] uvcvideo: simplify spin_lock using guards

[Chen Changcheng]

> This is an undesired syntax explicitly documented as one to avoid. You
> need here proper assignment, not NULL. Please don't use cleanup.h if you
> do not intend to follow it because it does not make the code simpler.

Thank you for your correction and feedback. I made the change initially
because I saw similar patterns using "__free(...) = NULL" in patches from
other driver modules, which led me to overlook the core paradigm of
cleanup.h that requires a "declaration with a meaningful initializer."

Best regards,
Changcheng Chen