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From: Akinobu Mita <akinobu.mita@gmail.com>
To: linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org,
	akpm@linux-foundation.org, arnd@arndb.de
Cc: Akinobu Mita <akinobu.mita@gmail.com>, Greg Ungerer <gerg@uclinux.org>
Subject: [PATCH v3 7/7] m68knommu: use generic find_next_bit_le()
Date: Wed, 27 Apr 2011 22:20:11 +0900	[thread overview]
Message-ID: <1303910411-15793-8-git-send-email-akinobu.mita@gmail.com> (raw)
In-Reply-To: <1303910411-15793-1-git-send-email-akinobu.mita@gmail.com>

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@gmail.com>
Cc: Greg Ungerer <gerg@uclinux.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

      parent reply	other threads:[~2011-04-27 13:20 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-04-27 13:20 [PATCH v3 0/7] remove CONFIG_GENERIC_FIND_{NEXT_BIT,BIT_LE,LAST_BIT} Akinobu Mita
2011-04-27 13:20 ` [PATCH v3 1/7] m68knommu: fix build error due to the lack of find_next_bit_le() Akinobu Mita
2011-04-27 13:20   ` Akinobu Mita
2011-05-03  6:58   ` Greg Ungerer
2011-05-03  9:11     ` Akinobu Mita
2011-05-03  9:12       ` Geert Uytterhoeven
2011-04-27 13:20 ` [PATCH v3 2/7] arch: add #define for each of optimized find bitops Akinobu Mita
2011-04-27 13:20   ` Akinobu Mita
2011-04-27 14:00   ` Geert Uytterhoeven
2011-04-27 13:20 ` [PATCH v3 3/7] bitops: add #ifndef for each of " Akinobu Mita
2011-04-27 13:20   ` Akinobu Mita
2011-04-27 13:20 ` [PATCH v3 4/7] arch: remove CONFIG_GENERIC_FIND_{NEXT_BIT,BIT_LE,LAST_BIT} Akinobu Mita
2011-04-27 13:20   ` Akinobu Mita
2011-04-27 13:20 ` [PATCH v3 5/7] arm: use asm-generic/bitops/le.h Akinobu Mita
2011-04-27 13:20 ` [PATCH v3 6/7] s390: " Akinobu Mita
2011-04-27 13:20   ` Akinobu Mita
2011-04-27 13:20 ` Akinobu Mita [this message]

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