[U-Boot] [PATCH 5/5] x86: Add ilog2 to bitops

[Simon Glass]

From: Graeme Russ <graeme.russ at gmail.com>

ilog2 is required by AHCI driver

Signed-off-by: Graeme Russ <graeme.russ at gmail.com>
Signed-off-by: Simon Glass <sjg at chromium.org>
---
 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
-- 
1.7.7.3