This patch is needed on lts 4.4 for the same build error. Could you like to pick it up? Regards Alex --------- commit be95485a0b8288a93402705730d3ea32f9f812b9 Author: Arnd Bergmann <arnd@xxxxxxxx> Date: Thu Nov 19 15:03:57 2015 +0100 ARM: 8457/1: psci-smp is built only for SMP The PSCI SMP implementation is built only when both CONFIG_SMP and CONFIG_ARM_PSCI are set, so a configuration that has the latter but not the former can get a link error when it tries to call psci_smp_available(). arch/arm/mach-tegra/built-in.o: In function `tegra114_cpuidle_init': cpuidle-tegra114.c:(.init.text+0x52a): undefined reference to `psci_smp_available' This corrects the #ifdef in the psci.h header file to match the Makefile conditional we have for building that function. Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx> Signed-off-by: Russell King <rmk+kernel@xxxxxxxxxxxxxxxx> diff --git a/arch/arm/include/asm/psci.h b/arch/arm/include/asm/psci.h index 68ee3ce..b4c6d99 100644 --- a/arch/arm/include/asm/psci.h +++ b/arch/arm/include/asm/psci.h @@ -16,7 +16,7 @@ extern struct smp_operations psci_smp_ops; -#ifdef CONFIG_ARM_PSCI +#if defined(CONFIG_SMP) && defined(CONFIG_ARM_PSCI) bool psci_smp_available(void); #else static inline bool psci_smp_available(void) { return false; } -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html