The call appears to come from process context so kernel_power_off
should be safe.  And acpi_power_off won't necessarily work if you just
call machine_power_off.
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
                        *status |= WDIOF_OVERHEAT;
                        if (temp_panic) {
                                printk (KERN_INFO PFX "Temperature overheat trip!\n");
-                               machine_power_off();
+                               kernel_power_off();
                        }
                }
        } else {
                        *status |= WDIOF_OVERHEAT;
                        if (temp_panic) {
                                printk (KERN_INFO PFX "Temperature overheat trip!\n");
-                               machine_power_off();
+                               kernel_power_off();
                        }
                }
        }