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hwmon: Fix unchecked return status, SMSC chips

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hwmon: Fix unchecked return status, SMSC chips

Fix up 2 more hwmon drivers so that they no longer ignore return
status from device_create_file().

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Jean Delvare
2006-09-24 21:25:12 +02:00
committed by Greg Kroah-Hartman
parent a5ebe668ad
commit ce8c6ce1ec
2 changed files with 145 additions and 83 deletions
Download Patch File Download Diff File Expand all files Collapse all files

78
drivers/hwmon/smsc47m1.c
View File

@@ -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;