PM: Introduce pm_power_off_prepare

[linux-2.6-omap-h63xx.git] / drivers / acpi / processor_idle.c

diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c
index ae0654cd11eaa58bcf3fff763e2cd3d341004a44..80ffc782991631492d08c2dea2837972698e5193 100644 (file)
--- a/drivers/acpi/processor_idle.c
+++ b/drivers/acpi/processor_idle.c
@@ -332,16 +332,18 @@ static void acpi_processor_idle(void)
        int sleep_ticks = 0;
        u32 t1, t2 = 0;
 
-       pr = processors[smp_processor_id()];
-       if (!pr)
-               return;
-
        /*
         * Interrupts must be disabled during bus mastering calculations and
         * for C2/C3 transitions.
         */
        local_irq_disable();
 
+       pr = processors[smp_processor_id()];
+       if (!pr) {
+               local_irq_enable();
+               return;
+       }
+
        /*
         * Check whether we truly need to go idle, or should
         * reschedule:
@@ -475,7 +477,7 @@ static void acpi_processor_idle(void)
 
 #ifdef CONFIG_GENERIC_TIME
                /* TSC halts in C2, so notify users */
-               mark_tsc_unstable();
+               mark_tsc_unstable("possible TSC halt in C2");
 #endif
                /* Re-enable interrupts */
                local_irq_enable();
@@ -517,7 +519,7 @@ static void acpi_processor_idle(void)
 
 #ifdef CONFIG_GENERIC_TIME
                /* TSC halts in C3, so notify users */
-               mark_tsc_unstable();
+               mark_tsc_unstable("TSC halts in C3");
 #endif
                /* Re-enable interrupts */
                local_irq_enable();