Messages in this thread Patch in this message |  | | From | Namjae Jeon <> | Subject | [PATCH] include : compile warning by __const_hweight8 | Date | Sun, 3 Jul 2011 20:42:25 +0900 |
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The compilation 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 tye casting to remove warning.
Signed-off-by: Namjae Jeon <linkinjeon@gmail.com> --- include/asm-generic/bitops/const_hweight.h | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/include/asm-generic/bitops/const_hweight.h b/include/asm-generic/bitops/const_hweight.h index fa2a50b..d91b1aa 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))) + \ -- 1.7.4.4
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