[PATCH -mm 1/6] asm-generic: convert little-endian bitops macros to static inline functions

[Akinobu Mita]

(This patch is intended to be folded into the patch in -mm:
asm-generic-change-little-endian-bitops-to-take-any-pointer-types.patch)

The little-endian bitops on asm-generic are written as preprocessor
macros with the cast to "unsigned long *".
This means that even non-pointers will be accepted without an error, and
that is a Very Bad Thing.

This converts the little-endian bitops macros to static inline functions
with proper prototypes.

Suggested-by: "H. Peter Anvin" <hpa@xxxxxxxxx>
Signed-off-by: Akinobu Mita <akinobu.mita@xxxxxxxxx>
Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Cc: Arnd Bergmann <arnd@xxxxxxxx>
Cc: Richard Henderson <rth@xxxxxxxxxxx>
Cc: Ivan Kokshaysky <ink@xxxxxxxxxxxxxxxxxxxx>
Cc: Mikael Starvik <starvik@xxxxxxxx>
Cc: David Howells <dhowells@xxxxxxxxxx>
Cc: Yoshinori Sato <ysato@xxxxxxxxxxxxxxxxxxxx>
Cc: "Luck, Tony" <tony.luck@xxxxxxxxx>
Cc: Ralf Baechle <ralf@xxxxxxxxxxxxxx>
Cc: Kyle McMartin <kyle@xxxxxxxxxxx>
Cc: Matthew Wilcox <matthew@xxxxxx>
Cc: Grant Grundler <grundler@xxxxxxxxxxxxxxxx>
Cc: Paul Mundt <lethal@xxxxxxxxxxxx>
Cc: Kazumoto Kojima <kkojima@xxxxxxxxxxxxxx>
Cc: Hirokazu Takata <takata@xxxxxxxxxxxxxx>
Cc: "David S. Miller" <davem@xxxxxxxxxxxxx>
Cc: Chris Zankel <chris@xxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Hans-Christian Egtvedt <hans-christian.egtvedt@xxxxxxxxx>
Cc: "H. Peter Anvin" <hpa@xxxxxxxxx>
Cc: Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx>
Cc: Paul Mackerras <paulus@xxxxxxxxx>
---
 include/asm-generic/bitops/le.h |   73 +++++++++++++++++++++++++++------------
 1 files changed, 51 insertions(+), 22 deletions(-)

diff --git a/include/asm-generic/bitops/le.h b/include/asm-generic/bitops/le.h
index 7644a15..946a21b 100644
--- a/include/asm-generic/bitops/le.h
+++ b/include/asm-generic/bitops/le.h
@@ -8,12 +8,23 @@
 
 #define BITOP_LE_SWIZZLE	0
 
-#define find_next_zero_bit_le(addr, size, offset) \
-	find_next_zero_bit((unsigned long *)(addr), size, offset)
-#define find_next_bit_le(addr, size, offset) \
-	find_next_bit((unsigned long *)(addr), size, offset)
-#define find_first_zero_bit_le(addr, size) \
-	find_first_zero_bit((unsigned long *)(addr), size)
+static inline unsigned long find_next_zero_bit_le(const void *addr,
+		unsigned long size, unsigned long offset)
+{
+	return find_next_zero_bit(addr, size, offset);
+}
+
+static inline unsigned long find_next_bit_le(const void *addr,
+		unsigned long size, unsigned long offset)
+{
+	return find_next_bit(addr, size, offset);
+}
+
+static inline unsigned long find_first_zero_bit_le(const void *addr,
+		unsigned long size)
+{
+	return find_first_zero_bit(addr, size);
+}
 
 #elif defined(__BIG_ENDIAN)
 
@@ -31,21 +42,39 @@ extern unsigned long find_next_bit_le(const void *addr,
 #error "Please fix <asm/byteorder.h>"
 #endif
 
-#define test_bit_le(nr, addr) \
-	test_bit((nr) ^ BITOP_LE_SWIZZLE, (unsigned long *)(addr))
-#define __set_bit_le(nr, addr) \
-	__set_bit((nr) ^ BITOP_LE_SWIZZLE, (unsigned long *)(addr))
-#define __clear_bit_le(nr, addr) \
-	__clear_bit((nr) ^ BITOP_LE_SWIZZLE, (unsigned long *)(addr))
-
-#define test_and_set_bit_le(nr, addr) \
-	test_and_set_bit((nr) ^ BITOP_LE_SWIZZLE, (unsigned long *)(addr))
-#define test_and_clear_bit_le(nr, addr) \
-	test_and_clear_bit((nr) ^ BITOP_LE_SWIZZLE, (unsigned long *)(addr))
-
-#define __test_and_set_bit_le(nr, addr) \
-	__test_and_set_bit((nr) ^ BITOP_LE_SWIZZLE, (unsigned long *)(addr))
-#define __test_and_clear_bit_le(nr, addr) \
-	__test_and_clear_bit((nr) ^ BITOP_LE_SWIZZLE, (unsigned long *)(addr))
+static inline int test_bit_le(int nr, const void *addr)
+{
+	return test_bit(nr ^ BITOP_LE_SWIZZLE, addr);
+}
+
+static inline void __set_bit_le(int nr, void *addr)
+{
+	__set_bit(nr ^ BITOP_LE_SWIZZLE, addr);
+}
+
+static inline void __clear_bit_le(int nr, void *addr)
+{
+	__clear_bit(nr ^ BITOP_LE_SWIZZLE, addr);
+}
+
+static inline int test_and_set_bit_le(int nr, void *addr)
+{
+	return test_and_set_bit(nr ^ BITOP_LE_SWIZZLE, addr);
+}
+
+static inline int test_and_clear_bit_le(int nr, void *addr)
+{
+	return test_and_clear_bit(nr ^ BITOP_LE_SWIZZLE, addr);
+}
+
+static inline int __test_and_set_bit_le(int nr, void *addr)
+{
+	return __test_and_set_bit(nr ^ BITOP_LE_SWIZZLE, addr);
+}
+
+static inline int __test_and_clear_bit_le(int nr, void *addr)
+{
+	return __test_and_clear_bit(nr ^ BITOP_LE_SWIZZLE, addr);
+}
 
 #endif /* _ASM_GENERIC_BITOPS_LE_H_ */
-- 
1.7.3.4

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