diff options
Diffstat (limited to 'arch/ppc/mm/pgtable.c')
| -rw-r--r-- | arch/ppc/mm/pgtable.c | 5 |
1 files changed, 1 insertions, 4 deletions
diff --git a/arch/ppc/mm/pgtable.c b/arch/ppc/mm/pgtable.c index 354a9408f024..c023b7298809 100644 --- a/arch/ppc/mm/pgtable.c +++ b/arch/ppc/mm/pgtable.c @@ -313,11 +313,8 @@ void __init mapin_ram(void) } } -/* is x a power of 2? */ -#define is_power_of_2(x) ((x) != 0 && (((x) & ((x) - 1)) == 0)) - /* is x a power of 4? */ -#define is_power_of_4(x) ((x) != 0 && (((x) & (x-1)) == 0) && (ffs(x) & 1)) +#define is_power_of_4(x) is_power_of_2(x) && (ffs(x) & 1) /* * Set up a mapping for a block of I/O. |