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-rw-r--r--arch/arm/mach-msm/hotplug.c74
1 files changed, 0 insertions, 74 deletions
diff --git a/arch/arm/mach-msm/hotplug.c b/arch/arm/mach-msm/hotplug.c
deleted file mode 100644
index 326a87261f9a..000000000000
--- a/arch/arm/mach-msm/hotplug.c
+++ /dev/null
@@ -1,74 +0,0 @@
1/*
2 * Copyright (C) 2002 ARM Ltd.
3 * All Rights Reserved
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2 as
7 * published by the Free Software Foundation.
8 */
9#include <linux/kernel.h>
10#include <linux/errno.h>
11#include <linux/smp.h>
12
13#include <asm/smp_plat.h>
14
15#include "common.h"
16
17static inline void cpu_enter_lowpower(void)
18{
19}
20
21static inline void cpu_leave_lowpower(void)
22{
23}
24
25static inline void platform_do_lowpower(unsigned int cpu)
26{
27 /* Just enter wfi for now. TODO: Properly shut off the cpu. */
28 for (;;) {
29 /*
30 * here's the WFI
31 */
32 asm("wfi"
33 :
34 :
35 : "memory", "cc");
36
37 if (pen_release == cpu_logical_map(cpu)) {
38 /*
39 * OK, proper wakeup, we're done
40 */
41 break;
42 }
43
44 /*
45 * getting here, means that we have come out of WFI without
46 * having been woken up - this shouldn't happen
47 *
48 * The trouble is, letting people know about this is not really
49 * possible, since we are currently running incoherently, and
50 * therefore cannot safely call printk() or anything else
51 */
52 pr_debug("CPU%u: spurious wakeup call\n", cpu);
53 }
54}
55
56/*
57 * platform-specific code to shutdown a CPU
58 *
59 * Called with IRQs disabled
60 */
61void __ref msm_cpu_die(unsigned int cpu)
62{
63 /*
64 * we're ready for shutdown now, so do it
65 */
66 cpu_enter_lowpower();
67 platform_do_lowpower(cpu);
68
69 /*
70 * bring this CPU back into the world of cache
71 * coherency, and then restore interrupts
72 */
73 cpu_leave_lowpower();
74}