Merge branch 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee13...

[pandora-kernel.git] / drivers / hwmon / smsc47m1.c

diff --git a/drivers/hwmon/smsc47m1.c b/drivers/hwmon/smsc47m1.c
index 9cd28f2..47132fd 100644 (file)
--- a/drivers/hwmon/smsc47m1.c
+++ b/drivers/hwmon/smsc47m1.c
@@ -35,6 +35,7 @@
 #include <linux/err.h>
 #include <linux/init.h>
 #include <linux/mutex.h>
+#include <linux/sysfs.h>
 #include <asm/io.h>
 
 /* Address is autodetected, there is no default value */
@@ -347,6 +348,30 @@ fan_present(2);
 
 static DEVICE_ATTR(alarms, S_IRUGO, get_alarms, NULL);
 
+/* Almost all sysfs files may or may not be created depending on the chip
+   setup so we create them individually. It is still convenient to define a
+   group to remove them all at once. */
+static struct attribute *smsc47m1_attributes[] = {
+       &dev_attr_fan1_input.attr,
+       &dev_attr_fan1_min.attr,
+       &dev_attr_fan1_div.attr,
+       &dev_attr_fan2_input.attr,
+       &dev_attr_fan2_min.attr,
+       &dev_attr_fan2_div.attr,
+
+       &dev_attr_pwm1.attr,
+       &dev_attr_pwm1_enable.attr,
+       &dev_attr_pwm2.attr,
+       &dev_attr_pwm2_enable.attr,
+
+       &dev_attr_alarms.attr,
+       NULL
+};
+
+static const struct attribute_group smsc47m1_group = {
+       .attrs = smsc47m1_attributes,
+};
+
 static int __init smsc47m1_find(unsigned short *addr)
 {
        u8 val;
@@ -447,46 +472,62 @@ static int smsc47m1_detect(struct i2c_adapter *adapter)
        smsc47m1_update_device(&new_client->dev, 1);
 
        /* Register sysfs hooks */
-       data->class_dev = hwmon_device_register(&new_client->dev);
-       if (IS_ERR(data->class_dev)) {
-               err = PTR_ERR(data->class_dev);
-               goto error_detach;
-       }
-
        if (fan1) {
-               device_create_file(&new_client->dev, &dev_attr_fan1_input);
-               device_create_file(&new_client->dev, &dev_attr_fan1_min);
-               device_create_file(&new_client->dev, &dev_attr_fan1_div);
+               if ((err = device_create_file(&new_client->dev,
+                                             &dev_attr_fan1_input))
+                || (err = device_create_file(&new_client->dev,
+                                             &dev_attr_fan1_min))
+                || (err = device_create_file(&new_client->dev,
+                                             &dev_attr_fan1_div)))
+                       goto error_remove_files;
        } else
                dev_dbg(&new_client->dev, "Fan 1 not enabled by hardware, "
                        "skipping\n");
 
        if (fan2) {
-               device_create_file(&new_client->dev, &dev_attr_fan2_input);
-               device_create_file(&new_client->dev, &dev_attr_fan2_min);
-               device_create_file(&new_client->dev, &dev_attr_fan2_div);
+               if ((err = device_create_file(&new_client->dev,
+                                             &dev_attr_fan2_input))
+                || (err = device_create_file(&new_client->dev,
+                                             &dev_attr_fan2_min))
+                || (err = device_create_file(&new_client->dev,
+                                             &dev_attr_fan2_div)))
+                       goto error_remove_files;
        } else
                dev_dbg(&new_client->dev, "Fan 2 not enabled by hardware, "
                        "skipping\n");
 
        if (pwm1) {
-               device_create_file(&new_client->dev, &dev_attr_pwm1);
-               device_create_file(&new_client->dev, &dev_attr_pwm1_enable);
+               if ((err = device_create_file(&new_client->dev,
+                                             &dev_attr_pwm1))
+                || (err = device_create_file(&new_client->dev,
+                                             &dev_attr_pwm1_enable)))
+                       goto error_remove_files;
        } else
                dev_dbg(&new_client->dev, "PWM 1 not enabled by hardware, "
                        "skipping\n");
        if (pwm2) {
-               device_create_file(&new_client->dev, &dev_attr_pwm2);
-               device_create_file(&new_client->dev, &dev_attr_pwm2_enable);
+               if ((err = device_create_file(&new_client->dev,
+                                             &dev_attr_pwm2))
+                || (err = device_create_file(&new_client->dev,
+                                             &dev_attr_pwm2_enable)))
+                       goto error_remove_files;
        } else
                dev_dbg(&new_client->dev, "PWM 2 not enabled by hardware, "
                        "skipping\n");
 
-       device_create_file(&new_client->dev, &dev_attr_alarms);
+       if ((err = device_create_file(&new_client->dev, &dev_attr_alarms)))
+               goto error_remove_files;
+
+       data->class_dev = hwmon_device_register(&new_client->dev);
+       if (IS_ERR(data->class_dev)) {
+               err = PTR_ERR(data->class_dev);
+               goto error_remove_files;
+       }
 
        return 0;
 
-error_detach:
+error_remove_files:
+       sysfs_remove_group(&new_client->dev.kobj, &smsc47m1_group);
        i2c_detach_client(new_client);
 error_free:
        kfree(data);
@@ -501,6 +542,7 @@ static int smsc47m1_detach_client(struct i2c_client *client)
        int err;
 
        hwmon_device_unregister(data->class_dev);
+       sysfs_remove_group(&client->dev.kobj, &smsc47m1_group);
 
        if ((err = i2c_detach_client(client)))
                return err;