Commit f0f3d675 authored Jun 06, 2017 by David Rientjes Committed by Greg Hackmann Oct 16, 2017

UPSTREAM: compiler, clang: suppress warning for unused static inline functions



GCC explicitly does not warn for unused static inline functions for
-Wunused-function.  The manual states:

	Warn whenever a static function is declared but not defined or
	a non-inline static function is unused.

Clang does warn for static inline functions that are unused.

It turns out that suppressing the warnings avoids potentially complex

Suppress the warning for clang.

Signed-off-by: David Rientjes <rientjes@google.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
(cherry picked from commit abb2ea7dfd82451d85ce669b811310c05ab5ca46)

parent 2fe1b761

include/linux/compiler-clang.h

+7 −0

Original line number	Diff line number	Diff line
		@@ -15,3 +15,10 @@
		* with any version that can compile the kernel
		*/
		#define __UNIQUE_ID(prefix) __PASTE(__PASTE(__UNIQUE_ID_, prefix), __COUNTER__)

		/*
		* GCC does not warn about unused static inline functions for
		* -Wunused-function. This turns out to avoid the need for complex #ifdef
		* directives. Suppress the warning in clang as well.
		*/
		#define inline inline __attribute__((unused))