hwmon: (ntc_thermistor) Use dev instead of &pdev->dev where possible

Instead of repeatedly accessing &pdev->dev, use a local variable dev
instead where possible. Also drop 'dev' from private data since it is
unnecessary.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>

diff --git a/drivers/hwmon/ntc_thermistor.c b/drivers/hwmon/ntc_thermistor.c
index 485701c..6b2d522 100644 (file)
--- a/drivers/hwmon/ntc_thermistor.c
+++ b/drivers/hwmon/ntc_thermistor.c
@@ -256,7 +256,6 @@ struct ntc_data {
        struct device *hwmon_dev;
        struct ntc_thermistor_platform_data *pdata;
        const struct ntc_compensation *comp;
-       struct device *dev;
        int n_comp;
        char name[PLATFORM_NAME_SIZE];
 };
@@ -316,22 +315,22 @@ static const struct of_device_id ntc_match[] = {
 MODULE_DEVICE_TABLE(of, ntc_match);
 
 static struct ntc_thermistor_platform_data *
-ntc_thermistor_parse_dt(struct platform_device *pdev)
+ntc_thermistor_parse_dt(struct device *dev)
 {
        struct iio_channel *chan;
        enum iio_chan_type type;
-       struct device_node *np = pdev->dev.of_node;
+       struct device_node *np = dev->of_node;
        struct ntc_thermistor_platform_data *pdata;
        int ret;
 
        if (!np)
                return NULL;
 
-       pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
+       pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
        if (!pdata)
                return ERR_PTR(-ENOMEM);
 
-       chan = devm_iio_channel_get(&pdev->dev, NULL);
+       chan = devm_iio_channel_get(dev, NULL);
        if (IS_ERR(chan))
                return ERR_CAST(chan);
 
@@ -361,7 +360,7 @@ ntc_thermistor_parse_dt(struct platform_device *pdev)
 }
 #else
 static struct ntc_thermistor_platform_data *
-ntc_thermistor_parse_dt(struct platform_device *pdev)
+ntc_thermistor_parse_dt(struct device *dev)
 {
        return NULL;
 }
@@ -572,33 +571,34 @@ static const struct thermal_zone_of_device_ops ntc_of_thermal_ops = {
 static int ntc_thermistor_probe(struct platform_device *pdev)
 {
        struct thermal_zone_device *tz;
+       struct device *dev = &pdev->dev;
        const struct of_device_id *of_id =
-                       of_match_device(of_match_ptr(ntc_match), &pdev->dev);
+                       of_match_device(of_match_ptr(ntc_match), dev);
        const struct platform_device_id *pdev_id;
        struct ntc_thermistor_platform_data *pdata;
        struct ntc_data *data;
        int ret;
 
-       pdata = ntc_thermistor_parse_dt(pdev);
+       pdata = ntc_thermistor_parse_dt(dev);
        if (IS_ERR(pdata))
                return PTR_ERR(pdata);
        else if (pdata == NULL)
-               pdata = dev_get_platdata(&pdev->dev);
+               pdata = dev_get_platdata(dev);
 
        if (!pdata) {
-               dev_err(&pdev->dev, "No platform init data supplied.\n");
+               dev_err(dev, "No platform init data supplied.\n");
                return -ENODEV;
        }
 
        /* Either one of the two is required. */
        if (!pdata->read_uv && !pdata->read_ohm) {
-               dev_err(&pdev->dev,
+               dev_err(dev,
                        "Both read_uv and read_ohm missing. Need either one of the two.\n");
                return -EINVAL;
        }
 
        if (pdata->read_uv && pdata->read_ohm) {
-               dev_warn(&pdev->dev,
+               dev_warn(dev,
                         "Only one of read_uv and read_ohm is needed; ignoring read_uv.\n");
                pdata->read_uv = NULL;
        }
@@ -610,18 +610,16 @@ static int ntc_thermistor_probe(struct platform_device *pdev)
                                 NTC_CONNECTED_POSITIVE) ||
                                (pdata->connect != NTC_CONNECTED_POSITIVE &&
                                 pdata->connect != NTC_CONNECTED_GROUND))) {
-               dev_err(&pdev->dev,
-                       "Required data to use read_uv not supplied.\n");
+               dev_err(dev, "Required data to use read_uv not supplied.\n");
                return -EINVAL;
        }
 
-       data = devm_kzalloc(&pdev->dev, sizeof(struct ntc_data), GFP_KERNEL);
+       data = devm_kzalloc(dev, sizeof(struct ntc_data), GFP_KERNEL);
        if (!data)
                return -ENOMEM;
 
        pdev_id = of_id ? of_id->data : platform_get_device_id(pdev);
 
-       data->dev = &pdev->dev;
        data->pdata = pdata;
        strlcpy(data->name, pdev_id->name, sizeof(data->name));
 
@@ -647,37 +645,37 @@ static int ntc_thermistor_probe(struct platform_device *pdev)
                data->n_comp = ARRAY_SIZE(ncpXXxh103);
                break;
        default:
-               dev_err(&pdev->dev, "Unknown device type: %lu(%s)\n",
+               dev_err(dev, "Unknown device type: %lu(%s)\n",
                                pdev_id->driver_data, pdev_id->name);
                return -EINVAL;
        }
 
        platform_set_drvdata(pdev, data);
 
-       ret = sysfs_create_group(&data->dev->kobj, &ntc_attr_group);
+       ret = sysfs_create_group(&dev->kobj, &ntc_attr_group);
        if (ret) {
-               dev_err(data->dev, "unable to create sysfs files\n");
+               dev_err(dev, "unable to create sysfs files\n");
                return ret;
        }
 
-       data->hwmon_dev = hwmon_device_register(data->dev);
+       data->hwmon_dev = hwmon_device_register(dev);
        if (IS_ERR(data->hwmon_dev)) {
-               dev_err(data->dev, "unable to register as hwmon device.\n");
+               dev_err(dev, "unable to register as hwmon device.\n");
                ret = PTR_ERR(data->hwmon_dev);
                goto err_after_sysfs;
        }
 
-       dev_info(&pdev->dev, "Thermistor type: %s successfully probed.\n",
-                                                               pdev_id->name);
+       dev_info(dev, "Thermistor type: %s successfully probed.\n",
+                pdev_id->name);
 
-       tz = devm_thermal_zone_of_sensor_register(data->dev, 0, data->dev,
+       tz = devm_thermal_zone_of_sensor_register(dev, 0, dev,
                                                  &ntc_of_thermal_ops);
        if (IS_ERR(tz))
-               dev_dbg(&pdev->dev, "Failed to register to thermal fw.\n");
+               dev_dbg(dev, "Failed to register to thermal fw.\n");
 
        return 0;
 err_after_sysfs:
-       sysfs_remove_group(&data->dev->kobj, &ntc_attr_group);
+       sysfs_remove_group(&dev->kobj, &ntc_attr_group);
        return ret;
 }
 
@@ -686,7 +684,7 @@ static int ntc_thermistor_remove(struct platform_device *pdev)
        struct ntc_data *data = platform_get_drvdata(pdev);
 
        hwmon_device_unregister(data->hwmon_dev);
-       sysfs_remove_group(&data->dev->kobj, &ntc_attr_group);
+       sysfs_remove_group(&pdev->dev.kobj, &ntc_attr_group);
 
        return 0;
 }