From: Arnd Bergmann Date: Thu, 19 Nov 2015 14:49:23 +0000 (+0100) Subject: ARM: 8458/1: bL_switcher: add GIC dependency X-Git-Tag: v3.18.138~39 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0b86bf5d071510a30de50eed00ddc21b4b8276ea;p=thirdparty%2Fkernel%2Fstable.git ARM: 8458/1: bL_switcher: add GIC dependency [ Upstream commit 6c044fecdf78be3fda159a5036bb33700cdd5e59 ] It is not possible to build the bL_switcher code if the GIC driver is disabled, because it relies on calling into some gic specific interfaces, and that would result in this build error: arch/arm/common/built-in.o: In function `bL_switch_to': :(.text+0x1230): undefined reference to `gic_get_sgir_physaddr' :(.text+0x1244): undefined reference to `gic_send_sgi' :(.text+0x1268): undefined reference to `gic_migrate_target' arch/arm/common/built-in.o: In function `bL_switcher_enable.part.4': :(.text.unlikely+0x2f8): undefined reference to `gic_get_cpu_id' This adds a Kconfig dependency to ensure we only build the big-little switcher if the GIC driver is present as well. Almost all ARMv7 platforms come with a GIC anyway, but it is possible to build a kernel that disables all platforms. Signed-off-by: Arnd Bergmann Acked-by: Nicolas Pitre Signed-off-by: Russell King Signed-off-by: Sasha Levin --- diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 89c4b5ccc68df..bd3a806df0015 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -1432,7 +1432,7 @@ config BIG_LITTLE config BL_SWITCHER bool "big.LITTLE switcher support" - depends on BIG_LITTLE && MCPM && HOTPLUG_CPU + depends on BIG_LITTLE && MCPM && HOTPLUG_CPU && ARM_GIC select ARM_CPU_SUSPEND select CPU_PM help