From: Namjae Jeon <linkinjeon@gmail.com>
To: arnd@arndb.de, akpm@linux-foundation.org
Cc: linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org,
Namjae Jeon <linkinjeon@gmail.com>
Subject: [PATCH] include: Fix compile warning in include/linux/bitops.h
Date: Fri, 8 Jun 2012 23:15:30 -0400 [thread overview]
Message-ID: <1339211730-10398-1-git-send-email-linkinjeon@gmail.com> (raw)
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@gmail.com>
---
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
next reply other threads:[~2012-06-09 3:15 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-06-09 3:15 Namjae Jeon [this message]
2012-06-11 22:59 ` [PATCH] include: Fix compile warning in include/linux/bitops.h Andrew Morton
2012-06-12 0:05 ` Namjae Jeon
-- strict thread matches above, loose matches on Subject: below --
2011-08-24 15:23 Namjae Jeon
2011-08-24 15:29 ` NamJae Jeon
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