Use the attribute groups of the led-class to create the mode attribute
during probe in order to avoid racing with userspace.
Signed-off-by: Johan Hovold <johan@xxxxxxxxxx>
---
drivers/leds/leds-lm3530.c | 20 +++++++-------------
1 file changed, 7 insertions(+), 13 deletions(-)
diff --git a/drivers/leds/leds-lm3530.c b/drivers/leds/leds-lm3530.c
index 652368c2ea9a..91325de3cd33 100644
--- a/drivers/leds/leds-lm3530.c
+++ b/drivers/leds/leds-lm3530.c
@@ -400,6 +400,12 @@ static ssize_t lm3530_mode_set(struct device *dev, struct device_attribute
}
static DEVICE_ATTR(mode, 0644, lm3530_mode_get, lm3530_mode_set);
+static struct attribute *lm3530_attrs[] = {
+ &dev_attr_mode.attr,
+ NULL
+};
+ATTRIBUTE_GROUPS(lm3530);
+
static int lm3530_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
@@ -436,6 +442,7 @@ static int lm3530_probe(struct i2c_client *client,
drvdata->led_dev.name = LM3530_LED_DEV;
drvdata->led_dev.brightness_set = lm3530_brightness_set;
drvdata->led_dev.max_brightness = MAX_BRIGHTNESS;
+ drvdata->led_dev.groups = lm3530_groups;
i2c_set_clientdata(client, drvdata);
@@ -461,26 +468,13 @@ static int lm3530_probe(struct i2c_client *client,
return err;
}
- err = device_create_file(drvdata->led_dev.dev, &dev_attr_mode);
- if (err < 0) {
- dev_err(&client->dev, "File device creation failed: %d\n", err);
- err = -ENODEV;
- goto err_create_file;
- }
-
return 0;
-
-err_create_file:
- led_classdev_unregister(&drvdata->led_dev);
- return err;
}
static int lm3530_remove(struct i2c_client *client)
{
struct lm3530_data *drvdata = i2c_get_clientdata(client);
- device_remove_file(drvdata->led_dev.dev, &dev_attr_mode);
-
lm3530_led_disable(drvdata);
led_classdev_unregister(&drvdata->led_dev);
return 0;
--
1.8.5.5
--
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