1 files changed, 8 insertions, 4 deletions

diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
index 8ab80bafe3f1..767e2dcb9616 100644
--- a/drivers/acpi/scan.c
+++ b/drivers/acpi/scan.c
@@ -880,18 +880,22 @@ static int acpi_bus_get_power_flags(struct acpi_device *device)
                         int j;
 
                         device->power.flags.power_resources = 1;
-                        ps->flags.valid = 1;
                         for (j = 0; j < ps->resources.count; j++)
                                 acpi_bus_add_power_resource(ps->resources.handles[j]);
                 }
 
+                /* The exist of _PR3 indicates D3Cold support */
+                if (i == ACPI_STATE_D3) {
+                        status = acpi_get_handle(device->handle, object_name, &handle);
+                        if (ACPI_SUCCESS(status))
+                                device->power.states[ACPI_STATE_D3_COLD].flags.valid = 1;
+                }
+
                 /* Evaluate "_PSx" to see if we can do explicit sets */
                 object_name[2] = 'S';
                 status = acpi_get_handle(device->handle, object_name, &handle);
-                if (ACPI_SUCCESS(status)) {
+                if (ACPI_SUCCESS(status))
                         ps->flags.explicit_set = 1;
-                        ps->flags.valid = 1;
-                }
 
                 /* State is valid if we have some power control */
                 if (ps->resources.count || ps->flags.explicit_set)