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: firefly_0821_release~176^2~4^2~16^2~84 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=6c2d6ce4aaf766c1fd0f57a5ebca8c03c82b80fa;p=firefly-linux-kernel-4.4.55.git ARM: 8458/1: bL_switcher: add GIC dependency 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 (cherry picked from commit 6c044fecdf78be3fda159a5036bb33700cdd5e59) Signed-off-by: Alex Shi --- diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 34e1569a11ee..ceee97090051 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -1422,7 +1422,7 @@ 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