diff options
| author | Mika Westerberg <mika.westerberg@linux.intel.com> | 2020-02-12 17:59:39 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-03-05 16:45:15 +0100 |
| commit | a3e4a7228a08768d1ac43f95d0bbd7575fd390e4 (patch) | |
| tree | d0ae3a4f990cc18cca82f24e6b228dce2681a180 /include | |
| parent | ec2a01db62df18a4624e2ea6f4b849d2161f8378 (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 | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/include/acpi/actypes.h b/include/acpi/actypes.h index 2f3f28c7cea3..9373662cdb44 100644 --- a/include/acpi/actypes.h +++ b/include/acpi/actypes.h @@ -532,11 +532,12 @@ typedef u64 acpi_integer; strnlen (a, ACPI_NAMESEG_SIZE) == ACPI_NAMESEG_SIZE) /* - * Algorithm to obtain access bit width. + * Algorithm to obtain access bit or byte width. * Can be used with access_width of struct acpi_generic_address and access_size of * struct acpi_resource_generic_register. */ #define ACPI_ACCESS_BIT_WIDTH(size) (1 << ((size) + 2)) +#define ACPI_ACCESS_BYTE_WIDTH(size) (1 << ((size) - 1)) /******************************************************************************* * |