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/alpha/Kconfig | 1 + 1 file changed, 1 insertion(+) (limited to 'arch/alpha') diff --git a/arch/alpha/Kconfig b/arch/alpha/Kconfig index 780d4673c3ca..a5c2b1aa46b0 100644 --- a/arch/alpha/Kconfig +++ b/arch/alpha/Kconfig @@ -27,6 +27,7 @@ config ALPHA select AUDIT_ARCH select GENERIC_CPU_VULNERABILITIES select GENERIC_SMP_IDLE_THREAD + select HAS_IOPORT select HAVE_ARCH_AUDITSYSCALL select HAVE_MOD_ARCH_SPECIFIC select MODULES_USE_ELF_RELA -- cgit v1.2.3