diff options
Diffstat (limited to 'drivers/acpi/acpica')
| -rw-r--r-- | drivers/acpi/acpica/acmacros.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/acpi/acpica/acmacros.h b/drivers/acpi/acpica/acmacros.h index 411c18b7d541..b461f5568e8c 100644 --- a/drivers/acpi/acpica/acmacros.h +++ b/drivers/acpi/acpica/acmacros.h @@ -260,6 +260,10 @@ #define ACPI_IS_MISALIGNED(value) (((acpi_size) value) & (sizeof(acpi_size)-1)) +/* Generic (power-of-two) rounding */ + +#define ACPI_IS_POWER_OF_TWO(a) (((a) & ((a) - 1)) == 0) + /* * Bitmask creation * Bit positions start at zero. |