ARM: kirkwood: cpuidle: use init/exit common routine

Remove the duplicated code and use the cpuidle common code for initialization.
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Tested-by: Andrew Lunn <andrew@lunn.ch>
Acked-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

drivers/cpuidle/cpuidle-kirkwood.c

@@ -52,9 +52,6 @@ static struct cpuidle_driver kirkwood_idle_driver = {
 	},
 	.state_count = KIRKWOOD_MAX_STATES,
 };
-static struct cpuidle_device *device;
-
-static DEFINE_PER_CPU(struct cpuidle_device, kirkwood_cpuidle_device);
 
 /* Initialize CPU idle by registering the idle states */
 static int kirkwood_cpuidle_probe(struct platform_device *pdev)
@@ -69,22 +66,12 @@ static int kirkwood_cpuidle_probe(struct platform_device *pdev)
 	if (IS_ERR(ddr_operation_base))
 		return PTR_ERR(ddr_operation_base);
 
-	device = &per_cpu(kirkwood_cpuidle_device, smp_processor_id());
-	device->state_count = KIRKWOOD_MAX_STATES;
-
-	cpuidle_register_driver(&kirkwood_idle_driver);
-	if (cpuidle_register_device(device)) {
-		pr_err("kirkwood_init_cpuidle: Failed registering\n");
-		return -EIO;
-	}
-	return 0;
+	return cpuidle_register(&kirkwood_idle_driver, NULL);
 }
 
 int kirkwood_cpuidle_remove(struct platform_device *pdev)
 {
-	cpuidle_unregister_device(device);
-	cpuidle_unregister_driver(&kirkwood_idle_driver);
-
+	cpuidle_unregister(&kirkwood_idle_driver);
 	return 0;
 }