4.4-stable review patch. If anyone has any objections, please let me know.
------------------
[ 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 <a...@arndb.de>
Acked-by: Nicolas Pitre <n...@linaro.org>
Signed-off-by: Russell King <rmk+ker...@arm.linux.org.uk>
Signed-off-by: Sasha Levin <sas...@kernel.org>
---
arch/arm/Kconfig | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 3a0277c6c060..4cc908ee107f 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
--
2.19.1
