hwspinlock: sirf: Use devm_hwspin_lock_register() to register hwlock controller

Use devm_hwspin_lock_register() to register the hwlock controller instead of
unregistering the hwlock controller explicitly when removing the device.
Signed-off-by: Baolin Wang <baolin.wang7@gmail.com>
Link: https://lore.kernel.org/r/8f94e67b5f9af20a93418a2fc9cc71b194f1285c.1578453662.git.baolin.wang7@gmail.comSigned-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>

drivers/hwspinlock/sirf_hwspinlock.c

@@ -79,25 +79,11 @@ static int sirf_hwspinlock_probe(struct platform_device *pdev)
 
 	platform_set_drvdata(pdev, hwspin);
 
-	return hwspin_lock_register(&hwspin->bank, &pdev->dev,
+	return devm_hwspin_lock_register(&pdev->dev, &hwspin->bank,
 					 &sirf_hwspinlock_ops, 0,
 					 HW_SPINLOCK_NUMBER);
 }
 
-static int sirf_hwspinlock_remove(struct platform_device *pdev)
-{
-	struct sirf_hwspinlock *hwspin = platform_get_drvdata(pdev);
-	int ret;
-
-	ret = hwspin_lock_unregister(&hwspin->bank);
-	if (ret) {
-		dev_err(&pdev->dev, "%s failed: %d\n", __func__, ret);
-		return ret;
-	}
-
-	return 0;
-}
-
 static const struct of_device_id sirf_hwpinlock_ids[] = {
 	{ .compatible = "sirf,hwspinlock", },
 	{},
@@ -106,7 +92,6 @@ MODULE_DEVICE_TABLE(of, sirf_hwpinlock_ids);
 
 static struct platform_driver sirf_hwspinlock_driver = {
 	.probe = sirf_hwspinlock_probe,
-	.remove = sirf_hwspinlock_remove,
 	.driver = {
 		.name = "atlas7_hwspinlock",
 		.of_match_table = of_match_ptr(sirf_hwpinlock_ids),