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authorJean Delvare <khali@linux-fr.org>2006-09-24 21:25:12 +0200
committerGreg Kroah-Hartman <gregkh@suse.de>2006-09-28 15:31:19 -0700
commitce8c6ce1eceecfe090f6c1aa4108087b2051497b (patch)
treea119733f9fb1772f7c2436761fbbbe805b5f46fd /drivers/hwmon/smsc47m1.c
parenta5ebe668add5f76ed8f01f752b37cfa164a26a30 (diff)
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hwmon: Fix unchecked return status, SMSC chips
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>
Diffstat (limited to 'drivers/hwmon/smsc47m1.c')
-rw-r--r--drivers/hwmon/smsc47m1.c78
1 files changed, 60 insertions, 18 deletions
diff --git a/drivers/hwmon/smsc47m1.c b/drivers/hwmon/smsc47m1.c
index 9cd28f2709fc..47132fd26b1b 100644
--- 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;