diff options
Diffstat (limited to 'arch/arm/mach-exynos/hotplug.c')
| -rw-r--r-- | arch/arm/mach-exynos/hotplug.c | 21 |
1 files changed, 8 insertions, 13 deletions
diff --git a/arch/arm/mach-exynos/hotplug.c b/arch/arm/mach-exynos/hotplug.c index 69fa48397394..4d86961a7957 100644 --- a/arch/arm/mach-exynos/hotplug.c +++ b/arch/arm/mach-exynos/hotplug.c @@ -1,5 +1,4 @@ -/* linux arch/arm/mach-exynos4/hotplug.c - * +/* * Cloned from linux/arch/arm/mach-realview/hotplug.c * * Copyright (C) 2002 ARM Ltd. @@ -40,21 +39,17 @@ static inline void cpu_leave_lowpower(void) static inline void platform_do_lowpower(unsigned int cpu, int *spurious) { + u32 mpidr = cpu_logical_map(cpu); + u32 core_id = MPIDR_AFFINITY_LEVEL(mpidr, 0); + for (;;) { - /* make cpu1 to be turned off at next WFI command */ - if (cpu == 1) - exynos_cpu_power_down(cpu); + /* Turn the CPU off on next WFI instruction. */ + exynos_cpu_power_down(core_id); - /* - * here's the WFI - */ - asm(".word 0xe320f003\n" - : - : - : "memory", "cc"); + wfi(); - if (pen_release == cpu_logical_map(cpu)) { + if (pen_release == core_id) { /* * OK, proper wakeup, we're done */ |