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authorMylène Josserand <mylene.josserand@free-electrons.com>2016-03-29 08:55:58 +0200
committerAlexandre Belloni <alexandre.belloni@free-electrons.com>2016-05-20 12:33:51 +0200
commitef6b3125ca6f4319e760dc27617025b8af58d9d3 (patch)
treebcc0aeadeed58da447666175f5a79a59c7d3df33
parentfa5691131a87a36ee2d535aa3e8886e4e4f1e9f3 (diff)
rtc: m41t80: update sysfs entries export
The driver used an old sysfs entry export. Update it to use the DEVICE_ATTR_XX macro and remove the unnecessary CONFIG_RTC_INTF_SYSFS macro. Signed-off-by: Mylène Josserand <mylene.josserand@free-electrons.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
-rw-r--r--drivers/rtc/rtc-m41t80.c56
1 files changed, 32 insertions, 24 deletions
diff --git a/drivers/rtc/rtc-m41t80.c b/drivers/rtc/rtc-m41t80.c
index d107a8e..2721789 100644
--- a/drivers/rtc/rtc-m41t80.c
+++ b/drivers/rtc/rtc-m41t80.c
@@ -230,9 +230,8 @@ static struct rtc_class_ops m41t80_rtc_ops = {
.proc = m41t80_rtc_proc,
};
-#if defined(CONFIG_RTC_INTF_SYSFS) || defined(CONFIG_RTC_INTF_SYSFS_MODULE)
-static ssize_t m41t80_sysfs_show_flags(struct device *dev,
- struct device_attribute *attr, char *buf)
+static ssize_t flags_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
{
struct i2c_client *client = to_i2c_client(dev);
int val;
@@ -242,10 +241,10 @@ static ssize_t m41t80_sysfs_show_flags(struct device *dev,
return val;
return sprintf(buf, "%#x\n", val);
}
-static DEVICE_ATTR(flags, S_IRUGO, m41t80_sysfs_show_flags, NULL);
+static DEVICE_ATTR_RO(flags);
-static ssize_t m41t80_sysfs_show_sqwfreq(struct device *dev,
- struct device_attribute *attr, char *buf)
+static ssize_t sqwfreq_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
{
struct i2c_client *client = to_i2c_client(dev);
struct m41t80_data *clientdata = i2c_get_clientdata(client);
@@ -272,9 +271,10 @@ static ssize_t m41t80_sysfs_show_sqwfreq(struct device *dev,
}
return sprintf(buf, "%d\n", val);
}
-static ssize_t m41t80_sysfs_set_sqwfreq(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t count)
+
+static ssize_t sqwfreq_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
{
struct i2c_client *client = to_i2c_client(dev);
struct m41t80_data *clientdata = i2c_get_clientdata(client);
@@ -324,8 +324,7 @@ static ssize_t m41t80_sysfs_set_sqwfreq(struct device *dev,
}
return count;
}
-static DEVICE_ATTR(sqwfreq, S_IRUGO | S_IWUSR,
- m41t80_sysfs_show_sqwfreq, m41t80_sysfs_set_sqwfreq);
+static DEVICE_ATTR_RW(sqwfreq);
static struct attribute *attrs[] = {
&dev_attr_flags.attr,
@@ -336,17 +335,6 @@ static struct attribute_group attr_group = {
.attrs = attrs,
};
-static int m41t80_sysfs_register(struct device *dev)
-{
- return sysfs_create_group(&dev->kobj, &attr_group);
-}
-#else
-static int m41t80_sysfs_register(struct device *dev)
-{
- return 0;
-}
-#endif
-
#ifdef CONFIG_RTC_DRV_M41T80_WDT
/*
*****************************************************************************
@@ -636,6 +624,14 @@ static struct notifier_block wdt_notifier = {
*
*****************************************************************************
*/
+
+static void m41t80_remove_sysfs_group(void *_dev)
+{
+ struct device *dev = _dev;
+
+ sysfs_remove_group(&dev->kobj, &attr_group);
+}
+
static int m41t80_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
@@ -697,9 +693,21 @@ static int m41t80_probe(struct i2c_client *client,
return rc;
}
- rc = m41t80_sysfs_register(&client->dev);
- if (rc)
+ /* Export sysfs entries */
+ rc = sysfs_create_group(&(&client->dev)->kobj, &attr_group);
+ if (rc) {
+ dev_err(&client->dev, "Failed to create sysfs group: %d\n", rc);
return rc;
+ }
+
+ rc = devm_add_action(&client->dev, m41t80_remove_sysfs_group,
+ &client->dev);
+ if (rc) {
+ m41t80_remove_sysfs_group(&client->dev);
+ dev_err(&client->dev,
+ "Failed to add sysfs cleanup action: %d\n", rc);
+ return rc;
+ }
#ifdef CONFIG_RTC_DRV_M41T80_WDT
if (clientdata->features & M41T80_FEATURE_HT) {