Re: [PATCH 00/20] x86: address -Wmissing-prototype warnings

On 5/16/23 12:35, Arnd Bergmann wrote:

The ones that are a bit awkward are those that just add a prototype to
shut up the warning, but the prototypes are never used for calling the
function because the only caller is in assembler code. I tried to come up
with other ways to shut up the compiler using the asmlinkage annotation,
but with no success.

I went looking for the same thing.  It's too bad gcc doesn't have an
__attribute__ for it.