Message ID | 1309876731-15966-1-git-send-email-robherring2@gmail.com |
---|---|
State | Accepted |
Commit | 0b9bc73711aed13246dd2cb91a3f658eeb25baf5 |
Delegated to: | Albert ARIBAUD |
Headers | show |
Hi Rob, Le 05/07/2011 16:38, Rob Herring a écrit : > From: Rob Herring<rob.herring@calxeda.com> > > Add __ilog2 function for ARM. Needed for ahci.c > > Signed-off-by: Rob Herring<rob.herring@calxeda.com> > Cc: Albert ARIBAUD<albert.aribaud@free.fr> > --- Applied to u-boot-arm/master, thanks! (but please do not use my old e-mail address) Amicalement,
diff --git a/arch/arm/include/asm/bitops.h b/arch/arm/include/asm/bitops.h index 270f163..879e20e 100644 --- a/arch/arm/include/asm/bitops.h +++ b/arch/arm/include/asm/bitops.h @@ -106,6 +106,11 @@ static inline int test_bit(int nr, const void * addr) return ((unsigned char *) addr)[nr >> 3] & (1U << (nr & 7)); } +static inline int __ilog2(unsigned int x) +{ + return generic_fls(x) - 1; +} + /* * ffz = Find First Zero in word. Undefined if no zero exists, * so code should check against ~0UL first..