From fcbfe8121a45152a3cfbe1c28c96a3b611b7347d Mon Sep 17 00:00:00 2001 From: Niklas Schnelle Date: Thu, 23 Mar 2023 17:33:52 +0100 Subject: Kconfig: introduce HAS_IOPORT option and select it as necessary We introduce a new HAS_IOPORT Kconfig option to indicate support for I/O Port access. In a future patch HAS_IOPORT=n will disable compilation of the I/O accessor functions inb()/outb() and friends on architectures which can not meaningfully support legacy I/O spaces such as s390. The following architectures do not select HAS_IOPORT: * ARC * C-SKY * Hexagon * Nios II * OpenRISC * s390 * User-Mode Linux * Xtensa All other architectures select HAS_IOPORT at least conditionally. The "depends on" relations on HAS_IOPORT in drivers as well as ifdefs for HAS_IOPORT specific sections will be added in subsequent patches on a per subsystem basis. Co-developed-by: Arnd Bergmann Signed-off-by: Arnd Bergmann Acked-by: Johannes Berg # for ARCH=um Acked-by: Geert Uytterhoeven Signed-off-by: Niklas Schnelle Signed-off-by: Arnd Bergmann --- arch/sh/Kconfig | 1 + 1 file changed, 1 insertion(+) (limited to 'arch/sh/Kconfig') diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig index 0665ac0add0b..cfb797bc4200 100644 --- a/arch/sh/Kconfig +++ b/arch/sh/Kconfig @@ -25,6 +25,7 @@ config SUPERH select GENERIC_SCHED_CLOCK select GENERIC_SMP_IDLE_THREAD select GUP_GET_PXX_LOW_HIGH if X2TLB + select HAS_IOPORT if HAS_IOPORT_MAP select HAVE_ARCH_AUDITSYSCALL select HAVE_ARCH_KGDB select HAVE_ARCH_SECCOMP_FILTER -- cgit