The compile warning is caused by __const_hweight8 when using
hweight_long with -Wsign-compare option.
The reason is that the default return value of this macro is signed.
So need type casting to remove warning.
Signed-off-by: Namjae Jeon <linkinjeon@xxxxxxxxx>
---
include/asm-generic/bitops/const_hweight.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/include/asm-generic/bitops/const_hweight.h b/include/asm-generic/bitops/const_hweight.h
index fa2a50b..3ad0dae 100644
--- a/include/asm-generic/bitops/const_hweight.h
+++ b/include/asm-generic/bitops/const_hweight.h
@@ -4,7 +4,7 @@
/*
* Compile time versions of __arch_hweightN()
*/
-#define __const_hweight8(w) \
+#define __const_hweight8(w) (unsigned long) \
( (!!((w) & (1ULL << 0))) + \
(!!((w) & (1ULL << 1))) + \
(!!((w) & (1ULL << 2))) + \
--
1.7.9.5
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