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USB: usblp: convert to use dev_groups

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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.

Cc: Pete Zaitcev <zaitcev@redhat.com>
Link: https://lore.kernel.org/r/20190806144502.17792-6-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Greg Kroah-Hartman 2019-08-06 16:44:55 +02:00
parent 04a0625e3b
commit 02c4d45d83
1 changed files with 7 additions and 6 deletions
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13
drivers/usb/class/usblp.c
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@ -1082,6 +1082,12 @@ static ssize_t ieee1284_id_show(struct device *dev, struct device_attribute *att
static DEVICE_ATTR_RO(ieee1284_id);
static struct attribute *usblp_attrs[] = {
&dev_attr_ieee1284_id.attr,
NULL,
};
ATTRIBUTE_GROUPS(usblp);
static int usblp_probe(struct usb_interface *intf,
const struct usb_device_id *id)
{
@ -1156,9 +1162,6 @@ static int usblp_probe(struct usb_interface *intf,
/* Retrieve and store the device ID string. */
usblp_cache_device_id_string(usblp);
retval = device_create_file(&intf->dev, &dev_attr_ieee1284_id);
if (retval)
goto abort_intfdata;
#ifdef DEBUG
usblp_check_status(usblp, 0);
@ -1189,7 +1192,6 @@ static int usblp_probe(struct usb_interface *intf,
abort_intfdata:
usb_set_intfdata(intf, NULL);
device_remove_file(&intf->dev, &dev_attr_ieee1284_id);
abort:
kfree(usblp->readbuf);
kfree(usblp->statusbuf);
@ -1360,8 +1362,6 @@ static void usblp_disconnect(struct usb_interface *intf)
BUG();
}
device_remove_file(&intf->dev, &dev_attr_ieee1284_id);
mutex_lock(&usblp_mutex);
mutex_lock(&usblp->mut);
usblp->present = 0;
@ -1421,6 +1421,7 @@ static struct usb_driver usblp_driver = {
.suspend = usblp_suspend,
.resume = usblp_resume,
.id_table = usblp_ids,
.dev_groups = usblp_groups,
.supports_autosuspend = 1,
};