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>

diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c
index eb986385c57ac680942c747b54c8ed74bf0d4374..19e78fb0a8d1be477593d40f927425f572c5a9e8 100644 (file)
--- 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).