3.16.81-rc1 review patch. If anyone has any objections, please let me know. ------------------ From: Arnd Bergmann <arnd@xxxxxxxx> commit 6c044fecdf78be3fda159a5036bb33700cdd5e59 upstream. 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 <arnd@xxxxxxxx> Acked-by: Nicolas Pitre <nico@xxxxxxxxxx> Signed-off-by: Russell King <rmk+kernel@xxxxxxxxxxxxxxxx> Cc: Arnd Bergmann <arnd@xxxxxxxx> Signed-off-by: Ben Hutchings <ben@xxxxxxxxxxxxxxx> --- arch/arm/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -1485,7 +1485,7 @@ 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
