1 files changed, 14 insertions, 11 deletions

diff --git a/drivers/acpi/processor_core.c b/drivers/acpi/processor_core.c
index a3cc8a98255c..36a68fa114e3 100644
--- a/drivers/acpi/processor_core.c
+++ b/drivers/acpi/processor_core.c
@@ -840,17 +840,19 @@ static int is_processor_present(acpi_handle handle)
 
 
         status = acpi_evaluate_integer(handle, "_STA", NULL, &sta);
-        /*
-         * if a processor object does not have an _STA object,
-         * OSPM assumes that the processor is present.
-         */
-        if (status == AE_NOT_FOUND)
-                return 1;
 
         if (ACPI_SUCCESS(status) && (sta & ACPI_STA_DEVICE_PRESENT))
                 return 1;
 
-        ACPI_EXCEPTION((AE_INFO, status, "Processor Device is not present"));
+        /*
+         * _STA is mandatory for a processor that supports hot plug
+         */
+        if (status == AE_NOT_FOUND)
+                ACPI_DEBUG_PRINT((ACPI_DB_INFO,
+                                "Processor does not support hot plug\n"));
+        else
+                ACPI_EXCEPTION((AE_INFO, status,
+                                "Processor Device is not present"));
         return 0;
 }
 
@@ -886,8 +888,8 @@ int acpi_processor_device_add(acpi_handle handle, struct acpi_device **device)
         return 0;
 }
 
-static void
-acpi_processor_hotplug_notify(acpi_handle handle, u32 event, void *data)
+static void __ref acpi_processor_hotplug_notify(acpi_handle handle,
+                                                u32 event, void *data)
 {
         struct acpi_processor *pr;
         struct acpi_device *device = NULL;
@@ -897,9 +899,10 @@ acpi_processor_hotplug_notify(acpi_handle handle, u32 event, void *data)
         switch (event) {
         case ACPI_NOTIFY_BUS_CHECK:
         case ACPI_NOTIFY_DEVICE_CHECK:
-                printk("Processor driver received %s event\n",
+                ACPI_DEBUG_PRINT((ACPI_DB_INFO,
+                "Processor driver received %s event\n",
                        (event == ACPI_NOTIFY_BUS_CHECK) ?
-                       "ACPI_NOTIFY_BUS_CHECK" : "ACPI_NOTIFY_DEVICE_CHECK");
+                       "ACPI_NOTIFY_BUS_CHECK" : "ACPI_NOTIFY_DEVICE_CHECK"));
 
                 if (!is_processor_present(handle))
                         break;