linux-kernel - [PATCH 07/43] MN10300: Don't cast away the volatile in test

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Date:	Tue, 26 Oct 2010 03:53:39 +0100
From:	David Howells <dhowells@...hat.com>
To:	linux-am33-list@...hat.com
Cc:	linux-kernel@...r.kernel.org,
	Akira Takeuchi <takeuchi.akr@...panasonic.com>,
	Kiyoshi Owada <owada.kiyoshi@...panasonic.com>
Subject: [PATCH 07/43] MN10300: Don't cast away the volatile in test_bit()

From: Akira Takeuchi <takeuchi.akr@...panasonic.com>

Don't cast away the volatile in test_bit()'s parameter when we change its type
from const volatile void * so that we can dereference it.

Signed-off-by: Akira Takeuchi <takeuchi.akr@...panasonic.com>
Signed-off-by: Kiyoshi Owada <owada.kiyoshi@...panasonic.com>
Signed-off-by: David Howells <dhowells@...hat.com>
---

 arch/mn10300/include/asm/bitops.h |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)


diff --git a/arch/mn10300/include/asm/bitops.h b/arch/mn10300/include/asm/bitops.h
index 6208ea6..3b8a868 100644
--- a/arch/mn10300/include/asm/bitops.h
+++ b/arch/mn10300/include/asm/bitops.h
@@ -72,7 +72,7 @@ static inline void __clear_bit(unsigned long nr, volatile void *addr)
  */
 static inline int test_bit(unsigned long nr, const volatile void *addr)
 {
-	return 1UL & (((const unsigned int *) addr)[nr >> 5] >> (nr & 31));
+	return 1UL & (((const volatile unsigned int *) addr)[nr >> 5] >> (nr & 31));
 }
 
 /*

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