ACPI: remove unused "status_changed" return value from Check Device handling

Remove "status_changed" return from acpi_bus_check_device().  Nobody
does anything useful based on its value.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>

1 files changed, 3 insertions, 19 deletions

diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c
index eb986385c57a..19e78fb0a8d1 100644
--- a/drivers/acpi/bus.c
+++ b/drivers/acpi/bus.c
@@ -450,8 +450,7 @@ int acpi_bus_receive_event(struct acpi_bus_event *event)
                              Notification Handling
    -------------------------------------------------------------------------- */
 
-static int
-acpi_bus_check_device(struct acpi_device *device, int *status_changed)
+static int acpi_bus_check_device(struct acpi_device *device)
 {
         acpi_status status = 0;
         struct acpi_device_status old_status;
@@ -460,9 +459,6 @@ acpi_bus_check_device(struct acpi_device *device, int *status_changed)
         if (!device)
                 return -EINVAL;
 
-        if (status_changed)
-                *status_changed = 0;
-
         old_status = device->status;
 
         /*
@@ -471,10 +467,6 @@ acpi_bus_check_device(struct acpi_device *device, int *status_changed)
          */
         if (device->parent && !device->parent->status.present) {
                 device->status = device->parent->status;
-                if (STRUCT_TO_INT(old_status) != STRUCT_TO_INT(device->status)) {
-                        if (status_changed)
-                                *status_changed = 1;
-                }
                 return 0;
         }
 
@@ -485,9 +477,6 @@ acpi_bus_check_device(struct acpi_device *device, int *status_changed)
         if (STRUCT_TO_INT(old_status) == STRUCT_TO_INT(device->status))
                 return 0;
 
-        if (status_changed)
-                *status_changed = 1;
-
         /*
          * Device Insertion/Removal
          */
@@ -505,20 +494,15 @@ acpi_bus_check_device(struct acpi_device *device, int *status_changed)
 static int acpi_bus_check_scope(struct acpi_device *device)
 {
         int result = 0;
-        int status_changed = 0;
-
 
         if (!device)
                 return -EINVAL;
 
         /* Status Change? */
-        result = acpi_bus_check_device(device, &status_changed);
+        result = acpi_bus_check_device(device);
         if (result)
                 return result;
 
-        if (!status_changed)
-                return 0;
-
         /*
          * TBD: Enumerate child devices within this device's scope and
          *       run acpi_bus_check_device()'s on them.
@@ -571,7 +555,7 @@ static void acpi_bus_notify(acpi_handle handle, u32 type, void *data)
                 break;
 
         case ACPI_NOTIFY_DEVICE_CHECK:
-                result = acpi_bus_check_device(device, NULL);
+                result = acpi_bus_check_device(device);
                 /*
                  * TBD: We'll need to outsource certain events to non-ACPI
                  *      drivers via the device manager (device.c).