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From:   Chuhong Yuan <hslester96@gmail.com>
Cc:     Jonathan Cameron <jic23@kernel.org>, linux-iio@vger.kernel.org,
        linux-kernel@vger.kernel.org, Chuhong Yuan <hslester96@gmail.com>
Subject: [PATCH] iio: humidity: Use device-managed APIs
Date:   Fri, 26 Jul 2019 16:02:55 +0800
Message-Id: <20190726080255.13226-1-hslester96@gmail.com>
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Sender: linux-kernel-owner@vger.kernel.org
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Use device-managed APIs to simplify the code.
The remove functions are redundant now and can
be deleted.

Signed-off-by: Chuhong Yuan <hslester96@gmail.com>
---
 drivers/iio/humidity/am2315.c  | 21 ++++-----------------
 drivers/iio/humidity/hdc100x.c | 18 ++++--------------
 2 files changed, 8 insertions(+), 31 deletions(-)

diff --git a/drivers/iio/humidity/am2315.c b/drivers/iio/humidity/am2315.c
index f18da7859229..038638e92f4a 100644
--- a/drivers/iio/humidity/am2315.c
+++ b/drivers/iio/humidity/am2315.c
@@ -240,32 +240,20 @@ static int am2315_probe(struct i2c_client *client,
 	indio_dev->channels = am2315_channels;
 	indio_dev->num_channels = ARRAY_SIZE(am2315_channels);
 
-	ret = iio_triggered_buffer_setup(indio_dev, iio_pollfunc_store_time,
+	ret = devm_iio_triggered_buffer_setup(&client->dev,
+					indio_dev, iio_pollfunc_store_time,
 					 am2315_trigger_handler, NULL);
 	if (ret < 0) {
 		dev_err(&client->dev, "iio triggered buffer setup failed\n");
 		return ret;
 	}
 
-	ret = iio_device_register(indio_dev);
+	ret = devm_iio_device_register(&client->dev, indio_dev);
 	if (ret < 0)
-		goto err_buffer_cleanup;
+		return ret;
 
 	return 0;
 
-err_buffer_cleanup:
-	iio_triggered_buffer_cleanup(indio_dev);
-	return ret;
-}
-
-static int am2315_remove(struct i2c_client *client)
-{
-	struct iio_dev *indio_dev = i2c_get_clientdata(client);
-
-	iio_device_unregister(indio_dev);
-	iio_triggered_buffer_cleanup(indio_dev);
-
-	return 0;
 }
 
 static const struct i2c_device_id am2315_i2c_id[] = {
@@ -287,7 +275,6 @@ static struct i2c_driver am2315_driver = {
 		.acpi_match_table = ACPI_PTR(am2315_acpi_id),
 	},
 	.probe =            am2315_probe,
-	.remove =	    am2315_remove,
 	.id_table =         am2315_i2c_id,
 };
 
diff --git a/drivers/iio/humidity/hdc100x.c b/drivers/iio/humidity/hdc100x.c
index 066e05f92081..5186fd9bfdc5 100644
--- a/drivers/iio/humidity/hdc100x.c
+++ b/drivers/iio/humidity/hdc100x.c
@@ -385,26 +385,17 @@ static int hdc100x_probe(struct i2c_client *client,
 	hdc100x_set_it_time(data, 1, hdc100x_int_time[1][0]);
 	hdc100x_update_config(data, HDC100X_REG_CONFIG_ACQ_MODE, 0);
 
-	ret = iio_triggered_buffer_setup(indio_dev, NULL,
+	ret = devm_iio_triggered_buffer_setup(&client->dev,
+					 indio_dev, NULL,
 					 hdc100x_trigger_handler,
 					 &hdc_buffer_setup_ops);
 	if (ret < 0) {
 		dev_err(&client->dev, "iio triggered buffer setup failed\n");
 		return ret;
 	}
-	ret = iio_device_register(indio_dev);
+	ret = devm_iio_device_register(&client->dev, indio_dev);
 	if (ret < 0)
-		iio_triggered_buffer_cleanup(indio_dev);
-
-	return ret;
-}
-
-static int hdc100x_remove(struct i2c_client *client)
-{
-	struct iio_dev *indio_dev = i2c_get_clientdata(client);
-
-	iio_device_unregister(indio_dev);
-	iio_triggered_buffer_cleanup(indio_dev);
+		return ret;
 
 	return 0;
 }
@@ -436,7 +427,6 @@ static struct i2c_driver hdc100x_driver = {
 		.of_match_table = of_match_ptr(hdc100x_dt_ids),
 	},
 	.probe = hdc100x_probe,
-	.remove = hdc100x_remove,
 	.id_table = hdc100x_id,
 };
 module_i2c_driver(hdc100x_driver);
-- 
2.20.1