From: Mika Westerberg mika.westerberg@linux.intel.com
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 Signed-off-by: Yang Yingliang yangyingliang@huawei.com --- include/acpi/actypes.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/include/acpi/actypes.h b/include/acpi/actypes.h index 66ceb12..2939a6c 100644 --- a/include/acpi/actypes.h +++ b/include/acpi/actypes.h @@ -528,11 +528,12 @@ #define ACPI_MAKE_RSDP_SIG(dest) (memcpy (ACPI_CAST_PTR (char, (dest)), ACPI_SIG_RSDP, 8))
/* - * 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))
/******************************************************************************* *