diff options
| author | Mika Westerberg <mika.westerberg@linux.intel.com> | 2020-02-12 17:59:39 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-03-11 07:53:05 +0100 |
| commit | ba7e258550e2fd5387181f30538b137381904eb3 (patch) | |
| tree | 3e47cea992e4768cdcaa6d935c1515cd07fa3960 /include | |
| parent | 145bd64d35822a62c4570bc75c5285acb1820fb3 (diff) | |
ACPICA: Introduce ACPI_ACCESS_BYTE_WIDTH() macro
commit 1dade3a7048ccfc675650cd2cf13d578b095e5fb upstream.
Sometimes it is useful to find the access_width field value in bytes and
not in bits so add a helper that can be used for this purpose.
Suggested-by: Jean Delvare <jdelvare@suse.de>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Jean Delvare <jdelvare@suse.de>
Cc: 4.16+ <stable@vger.kernel.org> # 4.16+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/acpi/actypes.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/acpi/actypes.h b/include/acpi/actypes.h index 1d798abae710..f502d257d494 100644 --- a/include/acpi/actypes.h +++ b/include/acpi/actypes.h @@ -551,6 +551,8 @@ typedef u64 acpi_integer; #define ACPI_VALIDATE_RSDP_SIG(a) (!strncmp (ACPI_CAST_PTR (char, (a)), ACPI_SIG_RSDP, 8)) #define ACPI_MAKE_RSDP_SIG(dest) (memcpy (ACPI_CAST_PTR (char, (dest)), ACPI_SIG_RSDP, 8)) +#define ACPI_ACCESS_BYTE_WIDTH(size) (1 << ((size) - 1)) + /******************************************************************************* * * Miscellaneous constants |