2019-07-28 14:37:59

by Chuhong Yuan

Subject: [PATCH v2] iio: light: cm3323: Use device-managed APIs

Use device-managed APIs to simplify the code.
The remove functions are redundant now and can
be deleted.

Signed-off-by: Chuhong Yuan <[email protected]>
---
Changes in v2:
- Split v1 into two patches.
- Drop the failed to register message and just
return devm_iio_register.

drivers/iio/light/cm3323.c | 33 +++++++++------------------------
1 file changed, 9 insertions(+), 24 deletions(-)

diff --git a/drivers/iio/light/cm3323.c b/drivers/iio/light/cm3323.c
index 50f3438c2b49..0443861ba1ec 100644
--- a/drivers/iio/light/cm3323.c
+++ b/drivers/iio/light/cm3323.c
@@ -101,15 +101,16 @@ static int cm3323_init(struct iio_dev *indio_dev)
return 0;
}

-static void cm3323_disable(struct iio_dev *indio_dev)
+static void cm3323_disable(void *data)
{
int ret;
- struct cm3323_data *data = iio_priv(indio_dev);
+ struct iio_dev *indio_dev = data;
+ struct cm3323_data *cm_data = iio_priv(indio_dev);

- ret = i2c_smbus_write_word_data(data->client, CM3323_CMD_CONF,
+ ret = i2c_smbus_write_word_data(cm_data->client, CM3323_CMD_CONF,
CM3323_CONF_SD_BIT);
if (ret < 0)
- dev_err(&data->client->dev, "Error writing reg_conf\n");
+ dev_err(&cm_data->client->dev, "Error writing reg_conf\n");
}

static int cm3323_set_it_bits(struct cm3323_data *data, int val, int val2)
@@ -243,26 +244,11 @@ static int cm3323_probe(struct i2c_client *client,
return ret;
}

- ret = iio_device_register(indio_dev);
- if (ret < 0) {
- dev_err(&client->dev, "failed to register iio dev\n");
- goto err_init;
- }
-
- return 0;
-err_init:
- cm3323_disable(indio_dev);
- return ret;
-}
-
-static int cm3323_remove(struct i2c_client *client)
-{
- struct iio_dev *indio_dev = i2c_get_clientdata(client);
-
- iio_device_unregister(indio_dev);
- cm3323_disable(indio_dev);
+ ret = devm_add_action_or_reset(&client->dev, cm3323_disable, indio_dev);
+ if (ret < 0)
+ return ret;

- return 0;
+ return devm_iio_device_register(&client->dev, indio_dev);
}

static const struct i2c_device_id cm3323_id[] = {
@@ -276,7 +262,6 @@ static struct i2c_driver cm3323_driver = {
.name = CM3323_DRV_NAME,
},
.probe = cm3323_probe,
- .remove = cm3323_remove,
.id_table = cm3323_id,
};

--
2.20.1

2019-08-05 13:56:50

by Jonathan Cameron

Subject: Re: [PATCH v2] iio: light: cm3323: Use device-managed APIs

+CC Daniel as this is one of his I think.

On Sun, 28 Jul 2019 22:36:30 +0800
Chuhong Yuan <[email protected]> wrote:

> Use device-managed APIs to simplify the code.
> The remove functions are redundant now and can
> be deleted.
>
> Signed-off-by: Chuhong Yuan <[email protected]>
Applied to the togreg branch of iio.git and pushed out as testing
for the autobuilders to play with it.

Thanks,

Jonathan

> ---
> Changes in v2:
> - Split v1 into two patches.
> - Drop the failed to register message and just
> return devm_iio_register.
>
> drivers/iio/light/cm3323.c | 33 +++++++++------------------------
> 1 file changed, 9 insertions(+), 24 deletions(-)
>
> diff --git a/drivers/iio/light/cm3323.c b/drivers/iio/light/cm3323.c
> index 50f3438c2b49..0443861ba1ec 100644
> --- a/drivers/iio/light/cm3323.c
> +++ b/drivers/iio/light/cm3323.c
> @@ -101,15 +101,16 @@ static int cm3323_init(struct iio_dev *indio_dev)
> return 0;
> }
>
> -static void cm3323_disable(struct iio_dev *indio_dev)
> +static void cm3323_disable(void *data)
> {
> int ret;
> - struct cm3323_data *data = iio_priv(indio_dev);
> + struct iio_dev *indio_dev = data;
> + struct cm3323_data *cm_data = iio_priv(indio_dev);
>
> - ret = i2c_smbus_write_word_data(data->client, CM3323_CMD_CONF,
> + ret = i2c_smbus_write_word_data(cm_data->client, CM3323_CMD_CONF,
> CM3323_CONF_SD_BIT);
> if (ret < 0)
> - dev_err(&data->client->dev, "Error writing reg_conf\n");
> + dev_err(&cm_data->client->dev, "Error writing reg_conf\n");
> }
>
> static int cm3323_set_it_bits(struct cm3323_data *data, int val, int val2)
> @@ -243,26 +244,11 @@ static int cm3323_probe(struct i2c_client *client,
> return ret;
> }
>
> - ret = iio_device_register(indio_dev);
> - if (ret < 0) {
> - dev_err(&client->dev, "failed to register iio dev\n");
> - goto err_init;
> - }
> -
> - return 0;
> -err_init:
> - cm3323_disable(indio_dev);
> - return ret;
> -}
> -
> -static int cm3323_remove(struct i2c_client *client)
> -{
> - struct iio_dev *indio_dev = i2c_get_clientdata(client);
> -
> - iio_device_unregister(indio_dev);
> - cm3323_disable(indio_dev);
> + ret = devm_add_action_or_reset(&client->dev, cm3323_disable, indio_dev);
> + if (ret < 0)
> + return ret;
>
> - return 0;
> + return devm_iio_device_register(&client->dev, indio_dev);
> }
>
> static const struct i2c_device_id cm3323_id[] = {
> @@ -276,7 +262,6 @@ static struct i2c_driver cm3323_driver = {
> .name = CM3323_DRV_NAME,
> },
> .probe = cm3323_probe,
> - .remove = cm3323_remove,
> .id_table = cm3323_id,
> };
>