linux-kernel - [patch] ia64: boolean __test_and_clear

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Date:	Tue, 21 Jul 2009 17:09:44 +0200
From:	Johannes Weiner <hannes@...xchg.org>
To:	Tony Luck <tony.luck@...el.com>, Fenghua Yu <fenghua.yu@...el.com>
Cc:	linux-ia64@...r.kernel.org, <linux-kernel@...r.kernel.org>
Subject: [patch] ia64: boolean __test_and_clear_bit

__test_and_clear_bit() returns a bitfield with the tested-for bit set.
Make it consistent with the other bitops - of ia64 but also every
other architecture - and return a boolean value.

Signed-off-by: Johannes Weiner <hannes@...xchg.org>
---
 arch/ia64/include/asm/bitops.h |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/arch/ia64/include/asm/bitops.h b/arch/ia64/include/asm/bitops.h
index e2ca800..57a2787 100644
--- a/arch/ia64/include/asm/bitops.h
+++ b/arch/ia64/include/asm/bitops.h
@@ -286,7 +286,7 @@ __test_and_clear_bit(int nr, volatile void * addr)
 {
 	__u32 *p = (__u32 *) addr + (nr >> 5);
 	__u32 m = 1 << (nr & 31);
-	int oldbitset = *p & m;
+	int oldbitset = (*p & m) != 0;
 
 	*p &= ~m;
 	return oldbitset;
-- 
1.6.3

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