hwmon: Fix unchecked return status, batch 4
hwmon: Fix unchecked return status, batch 4
Fix up some hwmon drivers so that they no longer ignore return status
from device_create_file().
Note: f71805f actually checked the status from device_create_file
already. However it did not remove the files on device destruction.
It was also an opportunity to use sysfs_create/remove_group instead
of hand-made loops. This makes the changes much more important but
I think the result is worth it.
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/hwmon/lm83.c b/drivers/hwmon/lm83.c
index ea22489..feb87b4 100644
--- a/drivers/hwmon/lm83.c
+++ b/drivers/hwmon/lm83.c
@@ -40,6 +40,7 @@
#include <linux/hwmon.h>
#include <linux/err.h>
#include <linux/mutex.h>
+#include <linux/sysfs.h>
/*
* Addresses to scan
@@ -234,6 +235,48 @@
/* Raw alarm file for compatibility */
static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL);
+static struct attribute *lm83_attributes[] = {
+ &sensor_dev_attr_temp1_input.dev_attr.attr,
+ &sensor_dev_attr_temp3_input.dev_attr.attr,
+ &sensor_dev_attr_temp1_max.dev_attr.attr,
+ &sensor_dev_attr_temp3_max.dev_attr.attr,
+ &sensor_dev_attr_temp1_crit.dev_attr.attr,
+ &sensor_dev_attr_temp3_crit.dev_attr.attr,
+
+ &sensor_dev_attr_temp1_crit_alarm.dev_attr.attr,
+ &sensor_dev_attr_temp3_crit_alarm.dev_attr.attr,
+ &sensor_dev_attr_temp3_input_fault.dev_attr.attr,
+ &sensor_dev_attr_temp3_max_alarm.dev_attr.attr,
+ &sensor_dev_attr_temp1_max_alarm.dev_attr.attr,
+ &dev_attr_alarms.attr,
+ NULL
+};
+
+static const struct attribute_group lm83_group = {
+ .attrs = lm83_attributes,
+};
+
+static struct attribute *lm83_attributes_opt[] = {
+ &sensor_dev_attr_temp2_input.dev_attr.attr,
+ &sensor_dev_attr_temp4_input.dev_attr.attr,
+ &sensor_dev_attr_temp2_max.dev_attr.attr,
+ &sensor_dev_attr_temp4_max.dev_attr.attr,
+ &sensor_dev_attr_temp2_crit.dev_attr.attr,
+ &sensor_dev_attr_temp4_crit.dev_attr.attr,
+
+ &sensor_dev_attr_temp2_crit_alarm.dev_attr.attr,
+ &sensor_dev_attr_temp4_crit_alarm.dev_attr.attr,
+ &sensor_dev_attr_temp4_input_fault.dev_attr.attr,
+ &sensor_dev_attr_temp4_max_alarm.dev_attr.attr,
+ &sensor_dev_attr_temp2_input_fault.dev_attr.attr,
+ &sensor_dev_attr_temp2_max_alarm.dev_attr.attr,
+ NULL
+};
+
+static const struct attribute_group lm83_group_opt = {
+ .attrs = lm83_attributes_opt,
+};
+
/*
* Real code
*/
@@ -342,82 +385,32 @@
goto exit_free;
/*
- * Initialize the LM83 chip
- * (Nothing to do for this one.)
- */
-
- /* 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 exit_detach;
- }
-
- /*
+ * Register sysfs hooks
* The LM82 can only monitor one external diode which is
* at the same register as the LM83 temp3 entry - so we
* declare 1 and 3 common, and then 2 and 4 only for the LM83.
*/
- device_create_file(&new_client->dev,
- &sensor_dev_attr_temp1_input.dev_attr);
- device_create_file(&new_client->dev,
- &sensor_dev_attr_temp3_input.dev_attr);
-
- device_create_file(&new_client->dev,
- &sensor_dev_attr_temp1_max.dev_attr);
- device_create_file(&new_client->dev,
- &sensor_dev_attr_temp3_max.dev_attr);
-
- device_create_file(&new_client->dev,
- &sensor_dev_attr_temp1_crit.dev_attr);
- device_create_file(&new_client->dev,
- &sensor_dev_attr_temp3_crit.dev_attr);
-
- device_create_file(&new_client->dev,
- &sensor_dev_attr_temp3_input_fault.dev_attr);
- device_create_file(&new_client->dev,
- &sensor_dev_attr_temp1_max_alarm.dev_attr);
- device_create_file(&new_client->dev,
- &sensor_dev_attr_temp3_max_alarm.dev_attr);
- device_create_file(&new_client->dev,
- &sensor_dev_attr_temp1_crit_alarm.dev_attr);
- device_create_file(&new_client->dev,
- &sensor_dev_attr_temp3_crit_alarm.dev_attr);
- device_create_file(&new_client->dev, &dev_attr_alarms);
+ if ((err = sysfs_create_group(&new_client->dev.kobj, &lm83_group)))
+ goto exit_detach;
if (kind == lm83) {
- device_create_file(&new_client->dev,
- &sensor_dev_attr_temp2_input.dev_attr);
- device_create_file(&new_client->dev,
- &sensor_dev_attr_temp4_input.dev_attr);
+ if ((err = sysfs_create_group(&new_client->dev.kobj,
+ &lm83_group_opt)))
+ goto exit_remove_files;
+ }
- device_create_file(&new_client->dev,
- &sensor_dev_attr_temp2_max.dev_attr);
- device_create_file(&new_client->dev,
- &sensor_dev_attr_temp4_max.dev_attr);
-
- device_create_file(&new_client->dev,
- &sensor_dev_attr_temp2_crit.dev_attr);
- device_create_file(&new_client->dev,
- &sensor_dev_attr_temp4_crit.dev_attr);
-
- device_create_file(&new_client->dev,
- &sensor_dev_attr_temp2_input_fault.dev_attr);
- device_create_file(&new_client->dev,
- &sensor_dev_attr_temp4_input_fault.dev_attr);
- device_create_file(&new_client->dev,
- &sensor_dev_attr_temp2_max_alarm.dev_attr);
- device_create_file(&new_client->dev,
- &sensor_dev_attr_temp4_max_alarm.dev_attr);
- device_create_file(&new_client->dev,
- &sensor_dev_attr_temp2_crit_alarm.dev_attr);
- device_create_file(&new_client->dev,
- &sensor_dev_attr_temp4_crit_alarm.dev_attr);
+ data->class_dev = hwmon_device_register(&new_client->dev);
+ if (IS_ERR(data->class_dev)) {
+ err = PTR_ERR(data->class_dev);
+ goto exit_remove_files;
}
return 0;
+exit_remove_files:
+ sysfs_remove_group(&new_client->dev.kobj, &lm83_group);
+ sysfs_remove_group(&new_client->dev.kobj, &lm83_group_opt);
exit_detach:
i2c_detach_client(new_client);
exit_free:
@@ -432,6 +425,8 @@
int err;
hwmon_device_unregister(data->class_dev);
+ sysfs_remove_group(&client->dev.kobj, &lm83_group);
+ sysfs_remove_group(&client->dev.kobj, &lm83_group_opt);
if ((err = i2c_detach_client(client)))
return err;