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| author | Graeme Russ <graeme.russ@gmail.com> | 2012-11-27 15:38:38 +0000 |
|---|---|---|
| committer | Simon Glass <sjg@chromium.org> | 2012-11-28 11:40:03 -0800 |
| commit | 8abebe3eadb35222a1147078da4010b4cbfe5858 (patch) | |
| tree | 77ae39f4b01c615f0d5fe828eb10638c704f1889 | |
| parent | c73c6de60c94b444cd717ffd27041a49fbbc4849 (diff) | |
| download | olio-uboot-2014.01-8abebe3eadb35222a1147078da4010b4cbfe5858.tar.xz olio-uboot-2014.01-8abebe3eadb35222a1147078da4010b4cbfe5858.zip | |
x86: Add ilog2 to bitops
ilog2 is required by AHCI driver
Signed-off-by: Graeme Russ <graeme.russ@gmail.com>
Signed-off-by: Simon Glass <sjg@chromium.org>
| -rw-r--r-- | 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 c7a38f237..5a7e4cba2 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 |