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-rw-r--r--arch/alpha/kernel/process.c5
-rw-r--r--arch/m32r/kernel/process.c4
-rw-r--r--arch/um/kernel/reboot.c2
-rw-r--r--kernel/sys.c6
4 files changed, 17 insertions, 0 deletions
diff --git a/arch/alpha/kernel/process.c b/arch/alpha/kernel/process.c
index a8682612abc0..abb739b88ed1 100644
--- a/arch/alpha/kernel/process.c
+++ b/arch/alpha/kernel/process.c
@@ -43,6 +43,11 @@
#include "proto.h"
#include "pci_impl.h"
+/*
+ * Power off function, if any
+ */
+void (*pm_power_off)(void) = machine_power_off;
+
void
cpu_idle(void)
{
diff --git a/arch/m32r/kernel/process.c b/arch/m32r/kernel/process.c
index cc4b571e5db7..3bf55d92933f 100644
--- a/arch/m32r/kernel/process.c
+++ b/arch/m32r/kernel/process.c
@@ -50,6 +50,10 @@ unsigned long thread_saved_pc(struct task_struct *tsk)
* Powermanagement idle function, if any..
*/
void (*pm_idle)(void) = NULL;
+EXPORT_SYMBOL(pm_idle);
+
+void (*pm_power_off)(void) = NULL;
+EXPORT_SYMBOL(pm_power_off);
void disable_hlt(void)
{
diff --git a/arch/um/kernel/reboot.c b/arch/um/kernel/reboot.c
index a637e885c583..6f1a3a288117 100644
--- a/arch/um/kernel/reboot.c
+++ b/arch/um/kernel/reboot.c
@@ -12,6 +12,8 @@
#include "mode.h"
#include "choose-mode.h"
+void (*pm_power_off)(void);
+
#ifdef CONFIG_SMP
static void kill_idlers(int me)
{
diff --git a/kernel/sys.c b/kernel/sys.c
index eecf84526afe..d8e49e659027 100644
--- a/kernel/sys.c
+++ b/kernel/sys.c
@@ -489,6 +489,12 @@ asmlinkage long sys_reboot(int magic1, int magic2, unsigned int cmd, void __user
magic2 != LINUX_REBOOT_MAGIC2C))
return -EINVAL;
+ /* Instead of trying to make the power_off code look like
+ * halt when pm_power_off is not set do it the easy way.
+ */
+ if ((cmd == LINUX_REBOOT_CMD_POWER_OFF) && !pm_power_off)
+ cmd = LINUX_REBOOT_CMD_HALT;
+
lock_kernel();
switch (cmd) {
case LINUX_REBOOT_CMD_RESTART: