As per commit b3377d186572 ("ARM: 7064/1: vexpress: Use wfi macro in platform_do_lowpower."), wfi macro should be used instead of the hardcoded WFI instruction. This fixes following oops when the kernel is compiled in Thumb-2 mode on EXYNOS5. (Tested on EXYNOS5250 based Arndale board) $ reboot Disabling non-boot CPUs ... IRQ153 no longer affine to CPU1 CPU1: shutdown Internal error: Oops - undefined instruction: 0 [#1] PREEMPT SMP THUMB2 Modules linked in: CPU: 1 Not tainted (3.9.0-rc1-00015-gce76372 #1) PC is at 0xc065858e LR is at exynos_cpu_die+0x53/0xc0 Signed-off-by: Tushar Behera <tushar.behera@xxxxxxxxxx> --- arch/arm/mach-exynos/hotplug.c | 8 +------- 1 files changed, 1 insertions(+), 7 deletions(-) diff --git a/arch/arm/mach-exynos/hotplug.c b/arch/arm/mach-exynos/hotplug.c index c3f825b..d9712fe 100644 --- a/arch/arm/mach-exynos/hotplug.c +++ b/arch/arm/mach-exynos/hotplug.c @@ -99,13 +99,7 @@ static inline void platform_do_lowpower(unsigned int cpu, int *spurious) if (cpu == 1) __raw_writel(0, S5P_ARM_CORE1_CONFIGURATION); - /* - * here's the WFI - */ - asm(".word 0xe320f003\n" - : - : - : "memory", "cc"); + wfi(); if (pen_release == cpu_logical_map(cpu)) { /* -- 1.7.4.1 -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html