1 files changed, 6 insertions, 5 deletions

diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c
index a52126e46307..37132dc2da03 100644
--- a/drivers/acpi/bus.c
+++ b/drivers/acpi/bus.c
@@ -32,6 +32,7 @@
 #include <linux/device.h>
 #include <linux/proc_fs.h>
 #include <linux/acpi.h>
+#include <linux/slab.h>
 #ifdef CONFIG_X86
 #include <asm/mpspec.h>
 #endif
@@ -190,16 +191,16 @@ int acpi_bus_get_power(acpi_handle handle, int *state)
                  * Get the device's power state either directly (via _PSC) or
                  * indirectly (via power resources).
                  */
-                if (device->power.flags.explicit_get) {
+                if (device->power.flags.power_resources) {
+                        result = acpi_power_get_inferred_state(device);
+                        if (result)
+                                return result;
+                } else if (device->power.flags.explicit_get) {
                         status = acpi_evaluate_integer(device->handle, "_PSC",
                                                        NULL, &psc);
                         if (ACPI_FAILURE(status))
                                 return -ENODEV;
                         device->power.state = (int)psc;
-                } else if (device->power.flags.power_resources) {
-                        result = acpi_power_get_inferred_state(device);
-                        if (result)
-                                return result;
                 }
 
                 *state = device->power.state;