--- pcc_acpi.c
+++ pcc_acpi.c
@@ -887,7 +887,8 @@
	hotkey->device = device;
	hotkey->handle = device->handle;
	hotkey->num_sifr = num_sifr;
-	acpi_driver_data(device) = hotkey;
+	//acpi_driver_data(device) = hotkey;
+	device->driver_data = hotkey;
	strcpy(acpi_device_name(device), ACPI_PCC_DEVICE_NAME);
	strcpy(acpi_device_class(device), ACPI_PCC_CLASS);