Commit 08726846 authored Feb 12, 2020 by Mika Westerberg Committed by Greg Kroah-Hartman Mar 05, 2020

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>

parent c24d457a

include/acpi/actypes.h

+2 −1

Original line number	Diff line number	Diff line
		@@ -528,11 +528,12 @@ typedef u64 acpi_integer;
		#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))

		/*******************************************************************************
		*