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Diffstat (limited to 'lib/find_last_bit.c')
| -rw-r--r-- | lib/find_last_bit.c | 49 |
1 files changed, 0 insertions, 49 deletions
diff --git a/lib/find_last_bit.c b/lib/find_last_bit.c deleted file mode 100644 index 91ca09fbf6f9..000000000000 --- a/lib/find_last_bit.c +++ /dev/null @@ -1,49 +0,0 @@ -/* find_last_bit.c: fallback find next bit implementation - * - * Copyright (C) 2008 IBM Corporation - * Written by Rusty Russell <rusty@rustcorp.com.au> - * (Inspired by David Howell's find_next_bit implementation) - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. - */ - -#include <linux/bitops.h> -#include <linux/export.h> -#include <asm/types.h> -#include <asm/byteorder.h> - -#ifndef find_last_bit - -unsigned long find_last_bit(const unsigned long *addr, unsigned long size) -{ - unsigned long words; - unsigned long tmp; - - /* Start at final word. */ - words = size / BITS_PER_LONG; - - /* Partial final word? */ - if (size & (BITS_PER_LONG-1)) { - tmp = (addr[words] & (~0UL >> (BITS_PER_LONG - - (size & (BITS_PER_LONG-1))))); - if (tmp) - goto found; - } - - while (words) { - tmp = addr[--words]; - if (tmp) { -found: - return words * BITS_PER_LONG + __fls(tmp); - } - } - - /* Not found */ - return size; -} -EXPORT_SYMBOL(find_last_bit); - -#endif |