[PATCH 21/22] m68k: convert minix bitops to use little endian bitops

[Akinobu Mita]

The inode and block bitmap for minix filesystem is little endian
byte order on m68k. This converts them to use little endian bit
operations.

Signed-off-by: Akinobu Mita <akinobu.mita@xxxxxxxxx>
Cc: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>
Cc: Roman Zippel <zippel@xxxxxxxxxxxxxx>
Cc: linux-m68k@xxxxxxxxxxxxxxxxxxxx
---
 arch/m68k/include/asm/bitops_mm.h |   38 ++++++++----------------------------
 1 files changed, 9 insertions(+), 29 deletions(-)

diff --git a/arch/m68k/include/asm/bitops_mm.h b/arch/m68k/include/asm/bitops_mm.h
index e2cc3be..2451f7f 100644
--- a/arch/m68k/include/asm/bitops_mm.h
+++ b/arch/m68k/include/asm/bitops_mm.h
@@ -327,37 +327,17 @@ static inline int __fls(int x)
 
 /* Bitmap functions for the minix filesystem */
 
-static inline int minix_find_first_zero_bit(const void *vaddr, unsigned size)
-{
-	const unsigned short *p = vaddr, *addr = vaddr;
-	int res;
-	unsigned short num;
-
-	if (!size)
-		return 0;
-
-	size = (size >> 4) + ((size & 15) > 0);
-	while (*p++ == 0xffff)
-	{
-		if (--size == 0)
-			return (p - addr) << 4;
-	}
+#define minix_find_first_zero_bit(vaddr, size)	\
+	find_first_zero_le_bit(vaddr, (size))
 
-	num = ~*--p;
-	__asm__ __volatile__ ("bfffo %1{#16,#16},%0"
-			      : "=d" (res) : "d" (num & -num));
-	return ((p - addr) << 4) + (res ^ 31);
-}
+#define minix_test_and_set_bit(nr, addr)	\
+	__test_and_set_le_bit((nr), (unsigned long *)(addr))
+#define minix_set_bit(nr, addr)	\
+	__set_le_bit((nr), (unsigned long *)(addr))
+#define minix_test_and_clear_bit(nr, addr)	\
+	__test_and_clear_le_bit((nr), (unsigned long *)(addr))
 
-#define minix_test_and_set_bit(nr, addr)	__test_and_set_bit((nr) ^ 16, (unsigned long *)(addr))
-#define minix_set_bit(nr,addr)			__set_bit((nr) ^ 16, (unsigned long *)(addr))
-#define minix_test_and_clear_bit(nr, addr)	__test_and_clear_bit((nr) ^ 16, (unsigned long *)(addr))
-
-static inline int minix_test_bit(int nr, const void *vaddr)
-{
-	const unsigned short *p = vaddr;
-	return (p[nr >> 4] & (1U << (nr & 15))) != 0;
-}
+#define minix_test_bit(nr, addr)	test_le_bit(nr, addr)
 
 /* Bitmap functions for little endian. */
 
-- 
1.7.1.231.gd0b16

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