ilog2 is required by AHCI driver
Signed-off-by: Graeme Russ <graeme.r...@gmail.com>
---
arch/x86/include/asm/bitops.h | 5 +++++
1 files changed, 5 insertions(+), 0 deletions(-)
diff --git a/arch/x86/include/asm/bitops.h b/arch/x86/include/asm/bitops.h
index c7a38f2..5a7e4cb 100644
--- a/arch/x86/include/asm/bitops.h
+++ b/arch/x86/include/asm/bitops.h
@@ -351,6 +351,11 @@ static __inline__ int ffs(int x)
}
#define PLATFORM_FFS
+static inline int __ilog2(unsigned int x)
+{
+ return generic_fls(x) - 1;
+}
+
/**
* hweightN - returns the hamming weight of a N-bit word
* @x: the word to weigh
--
1.7.7.6
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