linux-kernel - [PATCH v3 7/7] m68knommu: use generic find_next_bit

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Date:	Wed, 27 Apr 2011 22:20:11 +0900
From:	Akinobu Mita <akinobu.mita@...il.com>
To:	linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org,
	akpm@...ux-foundation.org, arnd@...db.de
Cc:	Akinobu Mita <akinobu.mita@...il.com>,
	Greg Ungerer <gerg@...inux.org>
Subject: [PATCH v3 7/7] m68knommu: use generic find_next_bit_le()

The implementation of find_next_bit_le() on m68knommu is
identical with the generic implementation of find_next_bit_le().

Signed-off-by: Akinobu Mita <akinobu.mita@...il.com>
Cc: Greg Ungerer <gerg@...inux.org>
---
 arch/m68k/include/asm/bitops_no.h |   46 +-----------------------------------
 1 files changed, 2 insertions(+), 44 deletions(-)

diff --git a/arch/m68k/include/asm/bitops_no.h b/arch/m68k/include/asm/bitops_no.h
index cd229fb..c4250ae 100644
--- a/arch/m68k/include/asm/bitops_no.h
+++ b/arch/m68k/include/asm/bitops_no.h
@@ -337,50 +337,8 @@ found_middle:
 }
 #define find_next_zero_bit_le find_next_zero_bit_le
 
-static inline unsigned long find_next_bit_le(const void *addr, unsigned
-		long size, unsigned long offset)
-{
-	const unsigned long *p = addr;
-	unsigned long result = offset & ~(BITS_PER_LONG - 1);
-	unsigned long tmp;
-
-	if (offset >= size)
-		return size;
-	p += offset / BITS_PER_LONG;
-	size -= result;
-	offset &= (BITS_PER_LONG - 1UL);
-	if (offset) {
-		tmp = __swab32(*(p++));
-		tmp &= (~0UL << offset);
-		if (size < BITS_PER_LONG)
-			goto found_first;
-		if (tmp)
-			goto found_middle;
-		size -= BITS_PER_LONG;
-		result += BITS_PER_LONG;
-	}
-
-	while (size & ~(BITS_PER_LONG - 1)) {
-		tmp = *(p++);
-		if (tmp)
-			goto found_middle_swap;
-		result += BITS_PER_LONG;
-		size -= BITS_PER_LONG;
-	}
-	if (!size)
-		return result;
-	tmp = __swab32(*p);
-found_first:
-	tmp &= (~0UL >> (BITS_PER_LONG - size));
-	if (tmp == 0UL)		/* Are any bits set? */
-		return result + size; /* Nope. */
-found_middle:
-	return result + __ffs(tmp);
-
-found_middle_swap:
-	return result + __ffs(__swab32(tmp));
-}
-#define find_next_bit_le find_next_bit_le
+extern unsigned long find_next_bit_le(const void *addr,
+		unsigned long size, unsigned long offset);
 
 #endif /* __KERNEL__ */
 
-- 
1.7.4.4

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