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-rw-r--r--include/asm-frv/bitops.h13
1 files changed, 13 insertions, 0 deletions
diff --git a/include/asm-frv/bitops.h b/include/asm-frv/bitops.h
index 39456ba0ec17..287f6f697ce2 100644
--- a/include/asm-frv/bitops.h
+++ b/include/asm-frv/bitops.h
@@ -339,6 +339,19 @@ int __ffs(unsigned long x)
339 return 31 - bit; 339 return 31 - bit;
340} 340}
341 341
342/**
343 * __fls - find last (most-significant) set bit in a long word
344 * @word: the word to search
345 *
346 * Undefined if no set bit exists, so code should check against 0 first.
347 */
348static inline unsigned long __fls(unsigned long word)
349{
350 unsigned long bit;
351 asm("scan %1,gr0,%0" : "=r"(bit) : "r"(word));
352 return bit;
353}
354
342/* 355/*
343 * special slimline version of fls() for calculating ilog2_u32() 356 * special slimline version of fls() for calculating ilog2_u32()
344 * - note: no protection against n == 0 357 * - note: no protection against n == 0