Re: [PATCH] driver base: slience unused warning

[Maciej W. Rozycki]

On Fri, 8 Sep 2023, Su Hui wrote:

> This variable is been used but never be read, so gcc and W=1 give such
> warning.
> 
> drivers/base/module.c:36:6: error:
> variable ‘no_warn’ set but not used [-Werror=unused-but-set-variable]
> 
> I wanted to use "__maybe_unused" to avoid  this warning.
> 
> However it seems like a wrong using of "__maybe_unused" as Greg KH said:
> 
> "But no_warn is being used in this file, it's being set but not read
> which is ok.  That's a real use, so this change really isn't correct,
> sorry."

 The warning itself is a real issue to be sorted though.  Is this a use 
case for `#pragma GCC diagnostic'?

  Maciej