hwmon: (ads7871) Convert to use devm_ functions

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

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

diff --git a/drivers/hwmon/ads7871.c b/drivers/hwmon/ads7871.c
index 7bf4ce3..1b53aa4 100644 (file)
--- a/drivers/hwmon/ads7871.c
+++ b/drivers/hwmon/ads7871.c
@@ -198,20 +198,17 @@ static int __devinit ads7871_probe(struct spi_device *spi)
         * because there is no other error checking on an SPI bus
         * we need to make sure we really have a chip
         */
-       if (val != ret) {
-               err = -ENODEV;
-               goto exit;
-       }
+       if (val != ret)
+               return -ENODEV;
 
-       pdata = kzalloc(sizeof(struct ads7871_data), GFP_KERNEL);
-       if (!pdata) {
-               err = -ENOMEM;
-               goto exit;
-       }
+       pdata = devm_kzalloc(&spi->dev, sizeof(struct ads7871_data),
+                            GFP_KERNEL);
+       if (!pdata)
+               return -ENOMEM;
 
        err = sysfs_create_group(&spi->dev.kobj, &ads7871_group);
        if (err < 0)
-               goto error_free;
+               return err;
 
        spi_set_drvdata(spi, pdata);
 
@@ -225,9 +222,6 @@ static int __devinit ads7871_probe(struct spi_device *spi)
 
 error_remove:
        sysfs_remove_group(&spi->dev.kobj, &ads7871_group);
-error_free:
-       kfree(pdata);
-exit:
        return err;
 }
 
@@ -237,7 +231,6 @@ static int __devexit ads7871_remove(struct spi_device *spi)
 
        hwmon_device_unregister(pdata->hwmon_dev);
        sysfs_remove_group(&spi->dev.kobj, &ads7871_group);
-       kfree(pdata);
        return 0;
 }