[PATCH v4 01/17] compiler-context-analysis: Avoid unused parameter warning in _context_unsafe_alias()

[Ian Rogers]

_context_unsafe_alias() does not use its parameter 'p', which triggers
-Wunused-parameter when building code that enables -Wextra (such as
tools/perf, tools/lib/perf, tools/lib/subcmd, and tools/lib/symbol).
Explicitly cast 'p' to void to silence the warning, matching
__assume_ctx_lock() and __assume_shared_ctx_lock().

Reviewed-by: Marco Elver <elver@xxxxxxxxxx>
Signed-off-by: Ian Rogers <irogers@xxxxxxxxxx>
---
 include/linux/compiler-context-analysis.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/linux/compiler-context-analysis.h b/include/linux/compiler-context-analysis.h
index 8302ebc2ea8c..024e303188ad 100644
--- a/include/linux/compiler-context-analysis.h
+++ b/include/linux/compiler-context-analysis.h
@@ -243,7 +243,7 @@
  * alias as a function argument).
  */
 #define context_unsafe_alias(p) _context_unsafe_alias((void **)&(p))
-static inline void _context_unsafe_alias(void **p) { }
+static inline void _context_unsafe_alias(void **p) { (void)p; }
 
 /**
  * token_context_lock() - declare an abstract global context lock instance
-- 
2.56.0.212.g129ede20d9-goog