hwmon: (dme1737) Convert to use devm_ functions

Convert to use devm_ functions to reduce code size and simplify the code.

Cc: Juerg Haefliger <juergh@gmail.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

diff --git a/drivers/hwmon/dme1737.c b/drivers/hwmon/dme1737.c
index e7c6a19..fe0eeec 100644 (file)
--- a/drivers/hwmon/dme1737.c
+++ b/drivers/hwmon/dme1737.c
@@ -2475,11 +2475,9 @@ static int dme1737_i2c_probe(struct i2c_client *client,
        struct device *dev = &client->dev;
        int err;
 
-       data = kzalloc(sizeof(struct dme1737_data), GFP_KERNEL);
-       if (!data) {
-               err = -ENOMEM;
-               goto exit;
-       }
+       data = devm_kzalloc(dev, sizeof(struct dme1737_data), GFP_KERNEL);
+       if (!data)
+               return -ENOMEM;
 
        i2c_set_clientdata(client, data);
        data->type = id->driver_data;
@@ -2491,14 +2489,14 @@ static int dme1737_i2c_probe(struct i2c_client *client,
        err = dme1737_init_device(dev);
        if (err) {
                dev_err(dev, "Failed to initialize device.\n");
-               goto exit_kfree;
+               return err;
        }
 
        /* Create sysfs files */
        err = dme1737_create_files(dev);
        if (err) {
                dev_err(dev, "Failed to create sysfs files.\n");
-               goto exit_kfree;
+               return err;
        }
 
        /* Register device */
@@ -2513,9 +2511,6 @@ static int dme1737_i2c_probe(struct i2c_client *client,
 
 exit_remove:
        dme1737_remove_files(dev);
-exit_kfree:
-       kfree(data);
-exit:
        return err;
 }
 
@@ -2526,7 +2521,6 @@ static int dme1737_i2c_remove(struct i2c_client *client)
        hwmon_device_unregister(data->hwmon_dev);
        dme1737_remove_files(&client->dev);
 
-       kfree(data);
        return 0;
 }
 
@@ -2645,19 +2639,16 @@ static int __devinit dme1737_isa_probe(struct platform_device *pdev)
        int err;
 
        res = platform_get_resource(pdev, IORESOURCE_IO, 0);
-       if (!request_region(res->start, DME1737_EXTENT, "dme1737")) {
+       if (!devm_request_region(dev, res->start, DME1737_EXTENT, "dme1737")) {
                dev_err(dev, "Failed to request region 0x%04x-0x%04x.\n",
                        (unsigned short)res->start,
                        (unsigned short)res->start + DME1737_EXTENT - 1);
-               err = -EBUSY;
-               goto exit;
+               return -EBUSY;
        }
 
-       data = kzalloc(sizeof(struct dme1737_data), GFP_KERNEL);
-       if (!data) {
-               err = -ENOMEM;
-               goto exit_release_region;
-       }
+       data = devm_kzalloc(dev, sizeof(struct dme1737_data), GFP_KERNEL);
+       if (!data)
+               return -ENOMEM;
 
        data->addr = res->start;
        platform_set_drvdata(pdev, data);
@@ -2683,8 +2674,7 @@ static int __devinit dme1737_isa_probe(struct platform_device *pdev)
                           (device == SCH5127_DEVICE)) {
                        data->type = sch5127;
                } else {
-                       err = -ENODEV;
-                       goto exit_kfree;
+                       return -ENODEV;
                }
        }
 
@@ -2703,14 +2693,14 @@ static int __devinit dme1737_isa_probe(struct platform_device *pdev)
        err = dme1737_init_device(dev);
        if (err) {
                dev_err(dev, "Failed to initialize device.\n");
-               goto exit_kfree;
+               return err;
        }
 
        /* Create sysfs files */
        err = dme1737_create_files(dev);
        if (err) {
                dev_err(dev, "Failed to create sysfs files.\n");
-               goto exit_kfree;
+               return err;
        }
 
        /* Register device */
@@ -2725,12 +2715,6 @@ static int __devinit dme1737_isa_probe(struct platform_device *pdev)
 
 exit_remove_files:
        dme1737_remove_files(dev);
-exit_kfree:
-       platform_set_drvdata(pdev, NULL);
-       kfree(data);
-exit_release_region:
-       release_region(res->start, DME1737_EXTENT);
-exit:
        return err;
 }
 
@@ -2740,9 +2724,6 @@ static int __devexit dme1737_isa_remove(struct platform_device *pdev)
 
        hwmon_device_unregister(data->hwmon_dev);
        dme1737_remove_files(&pdev->dev);
-       release_region(data->addr, DME1737_EXTENT);
-       platform_set_drvdata(pdev, NULL);
-       kfree(data);
 
        return 0;
 }