Re: [PATCH v1 0/2] drm/i915/fence: A couple of build fixes

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On Thu, Aug 29, 2024 at 09:10:41PM +0300, Andy Shevchenko wrote:
> On Thu, Aug 29, 2024 at 07:53:25PM +0300, Andy Shevchenko wrote:
> > On Thu, Aug 29, 2024 at 07:38:08PM +0300, Jani Nikula wrote:
> > > On Thu, 29 Aug 2024, Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx> wrote:
> > > > With CONFIG_WERROR=y and `make W=1` build fails on my x86_64 machine.
> > > > This is due to some unused functions. Hence these quick fixes.
> > > 
> > > Since when have we been getting the warnings for static inlines?

Since commit 6863f5643dd7 ("kbuild: allow Clang to find unused static
inline functions for W=1 build"). clang warns about unused static inline
functions in .c files, unlike GCC (they both do not warn for functions
coming from .h files). This difference is worked around for the normal
build by adding '__maybe_unused' to the definition of 'inline' but
Masahiro wanted to disable it for W=1 to allow this difference to find
unused/dead code. There have not been too many complaints as far as I am
aware but I can see how it is surprising.

Cheers,
Nathan



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