[PATCH] Use safe_halt() rather than halt() in acpi_idle_play_deay()

["Luck, Tony: <tony.luck@xxxxxxxxx>"@mail.linuxfoundation.org]

ACPI code is shared by arch/x86 and arch/ia64. ia64 doesn't provide a plain
"halt()" function.  Use safe_halt() instead.

Signed-off-by: Tony Luck <tony.luck@xxxxxxxxx>

---

E-mail discussion indicated this would be OK. Please check on x86
before applying.

diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c
index b3447f6..f3decb3 100644
--- a/drivers/acpi/processor_idle.c
+++ b/drivers/acpi/processor_idle.c
@@ -786,7 +786,7 @@ static int acpi_idle_play_dead(struct cpuidle_device *dev, int index)
 	while (1) {
 
 		if (cx->entry_method == ACPI_CSTATE_HALT)
-			halt();
+			safe_halt();
 		else if (cx->entry_method == ACPI_CSTATE_SYSTEMIO) {
 			inb(cx->address);
 			/* See comment in acpi_idle_do_entry() */
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