USB drivers now support the ability for the driver core to handle the
creation and removal of device-specific sysfs files in a race-free
manner. Take advantage of that by converting the driver to use this by
moving the sysfs attributes into a group and assigning the dev_groups
pointer to it.
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/usb/misc/lvstest.c | 19 ++++---------------
1 file changed, 4 insertions(+), 15 deletions(-)
diff --git a/drivers/usb/misc/lvstest.c b/drivers/usb/misc/lvstest.c
index e5c03c6d16e9..407fe7570f3b 100644
--- a/drivers/usb/misc/lvstest.c
+++ b/drivers/usb/misc/lvstest.c
@@ -310,7 +310,7 @@ static ssize_t enable_compliance_store(struct device *dev,
}
static DEVICE_ATTR_WO(enable_compliance);
-static struct attribute *lvs_attributes[] = {
+static struct attribute *lvs_attrs[] = {
&dev_attr_get_dev_desc.attr,
&dev_attr_u1_timeout.attr,
&dev_attr_u2_timeout.attr,
@@ -321,10 +321,7 @@ static struct attribute *lvs_attributes[] = {
&dev_attr_enable_compliance.attr,
NULL
};
-
-static const struct attribute_group lvs_attr_group = {
- .attrs = lvs_attributes,
-};
+ATTRIBUTE_GROUPS(lvs);
static void lvs_rh_work(struct work_struct *work)
{
@@ -439,12 +436,6 @@ static int lvs_rh_probe(struct usb_interface *intf,
INIT_WORK(&lvs->rh_work, lvs_rh_work);
- ret = sysfs_create_group(&intf->dev.kobj, &lvs_attr_group);
- if (ret < 0) {
- dev_err(&intf->dev, "Failed to create sysfs node %d\n", ret);
- goto free_urb;
- }
-
pipe = usb_rcvintpipe(hdev, endpoint->bEndpointAddress);
maxp = usb_maxpacket(hdev, pipe, usb_pipeout(pipe));
usb_fill_int_urb(lvs->urb, hdev, pipe, &lvs->buffer[0], maxp,
@@ -453,13 +444,11 @@ static int lvs_rh_probe(struct usb_interface *intf,
ret = usb_submit_urb(lvs->urb, GFP_KERNEL);
if (ret < 0) {
dev_err(&intf->dev, "couldn't submit lvs urb %d\n", ret);
- goto sysfs_remove;
+ goto free_urb;
}
return ret;
-sysfs_remove:
- sysfs_remove_group(&intf->dev.kobj, &lvs_attr_group);
free_urb:
usb_free_urb(lvs->urb);
return ret;
@@ -469,7 +458,6 @@ static void lvs_rh_disconnect(struct usb_interface *intf)
{
struct lvs_rh *lvs = usb_get_intfdata(intf);
- sysfs_remove_group(&intf->dev.kobj, &lvs_attr_group);
usb_poison_urb(lvs->urb); /* used in scheduled work */
flush_work(&lvs->rh_work);
usb_free_urb(lvs->urb);
@@ -479,6 +467,7 @@ static struct usb_driver lvs_driver = {
.name = "lvs",
.probe = lvs_rh_probe,
.disconnect = lvs_rh_disconnect,
+ .dev_groups = lvs_groups,
};
module_usb_driver(lvs_driver);
--
2.22.0
