diff options
| author | Ingo Molnar <mingo@kernel.org> | 2012-08-28 18:05:55 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2012-08-28 18:05:55 +0200 |
| commit | 508dc4f8eece1a70c493afc6511fdf5934fef567 (patch) | |
| tree | b852a6a5bf9977a33a87158985de02d188ba71d7 /arch/arm/mach-imx/hotplug.c | |
| parent | 734e9a26d612f64e1c9cfd92256969b773954ae2 (diff) | |
| parent | e3e45c01ae690e65f2650e5288b9af802e95a136 (diff) | |
Merge branch 'perf/urgent' into perf/core
Pick up the latest fixes because upcoming uprobes changes will rely on it.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/arm/mach-imx/hotplug.c')
| -rw-r--r-- | arch/arm/mach-imx/hotplug.c | 23 |
1 files changed, 3 insertions, 20 deletions
diff --git a/arch/arm/mach-imx/hotplug.c b/arch/arm/mach-imx/hotplug.c index 20ed2d56c1a..f8f7437c83b 100644 --- a/arch/arm/mach-imx/hotplug.c +++ b/arch/arm/mach-imx/hotplug.c @@ -42,22 +42,6 @@ static inline void cpu_enter_lowpower(void) : "cc"); } -static inline void cpu_leave_lowpower(void) -{ - unsigned int v; - - asm volatile( - "mrc p15, 0, %0, c1, c0, 0\n" - " orr %0, %0, %1\n" - " mcr p15, 0, %0, c1, c0, 0\n" - " mrc p15, 0, %0, c1, c0, 1\n" - " orr %0, %0, %2\n" - " mcr p15, 0, %0, c1, c0, 1\n" - : "=&r" (v) - : "Ir" (CR_C), "Ir" (0x40) - : "cc"); -} - /* * platform-specific code to shutdown a CPU * @@ -67,11 +51,10 @@ void platform_cpu_die(unsigned int cpu) { cpu_enter_lowpower(); imx_enable_cpu(cpu, false); - cpu_do_idle(); - cpu_leave_lowpower(); - /* We should never return from idle */ - panic("cpu %d unexpectedly exit from shutdown\n", cpu); + /* spin here until hardware takes it down */ + while (1) + ; } int platform_cpu_disable(unsigned int cpu) |