rtc: m41t80: remove debug sysfs attribute

The last remaining sysfs attribute is undocumented and useless as it can
only be used to debug the driver. Remove it.

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>

diff --git a/drivers/rtc/rtc-m41t80.c b/drivers/rtc/rtc-m41t80.c
index 412a4e04de793bd00d82d2ee2c212fded532c4bd..f4c070ea83849a9e67f700519f0f83b8b7541227 100644 (file)
--- a/drivers/rtc/rtc-m41t80.c
+++ b/drivers/rtc/rtc-m41t80.c
@@ -440,28 +440,6 @@ static int m41t80_resume(struct device *dev)
 
 static SIMPLE_DEV_PM_OPS(m41t80_pm, m41t80_suspend, m41t80_resume);
 
-static ssize_t flags_show(struct device *dev,
-                         struct device_attribute *attr, char *buf)
-{
-       struct i2c_client *client = to_i2c_client(dev);
-       int val;
-
-       val = i2c_smbus_read_byte_data(client, M41T80_REG_FLAGS);
-       if (val < 0)
-               return val;
-       return sprintf(buf, "%#x\n", val);
-}
-static DEVICE_ATTR_RO(flags);
-
-static struct attribute *attrs[] = {
-       &dev_attr_flags.attr,
-       NULL,
-};
-
-static struct attribute_group attr_group = {
-       .attrs = attrs,
-};
-
 #ifdef CONFIG_COMMON_CLK
 #define sqw_to_m41t80_data(_hw) container_of(_hw, struct m41t80_data, sqw)
 
@@ -912,13 +890,6 @@ 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)
 {
@@ -1015,21 +986,6 @@ static int m41t80_probe(struct i2c_client *client,
                return 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_or_reset(&client->dev, m41t80_remove_sysfs_group,
-                                     &client->dev);
-       if (rc) {
-               dev_err(&client->dev,
-                       "Failed to add sysfs cleanup action: %d\n", rc);
-               return rc;
-       }
-
 #ifdef CONFIG_RTC_DRV_M41T80_WDT
        if (m41t80_data->features & M41T80_FEATURE_HT) {
                save_client = client;