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s390/ccwgroup: use bus->dev_groups for bus-based sysfs attributes

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Bus drivers have their own way of describing the sysfs attributes that
all devices on a bus should provide.
Switch ccwgroup_attr_groups over to use bus->dev_groups, and thus
free up dev->groups for usage by the ccwgroup device drivers.

While adjusting the attribute naming, use ATTRIBUTE_GROUPS() to get rid
of some boilerplate code.

Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Acked-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Julian Wiedmann 2020-12-07 14:12:29 +01:00 committed by David S. Miller
parent 04ea30c857
commit 050663129a
1 changed files with 3 additions and 9 deletions
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12
drivers/s390/cio/ccwgroup.c
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@ -210,18 +210,12 @@ static ssize_t ccwgroup_ungroup_store(struct device *dev,
static DEVICE_ATTR(ungroup, 0200, NULL, ccwgroup_ungroup_store);
static DEVICE_ATTR(online, 0644, ccwgroup_online_show, ccwgroup_online_store);
static struct attribute *ccwgroup_attrs[] = {
static struct attribute *ccwgroup_dev_attrs[] = {
&dev_attr_online.attr,
&dev_attr_ungroup.attr,
NULL,
};
static struct attribute_group ccwgroup_attr_group = {
.attrs = ccwgroup_attrs,
};
static const struct attribute_group *ccwgroup_attr_groups[] = {
&ccwgroup_attr_group,
NULL,
};
ATTRIBUTE_GROUPS(ccwgroup_dev);
static void ccwgroup_ungroup_workfn(struct work_struct *work)
{
@ -384,7 +378,6 @@ int ccwgroup_create_dev(struct device *parent, struct ccwgroup_driver *gdrv,
}
dev_set_name(&gdev->dev, "%s", dev_name(&gdev->cdev[0]->dev));
gdev->dev.groups = ccwgroup_attr_groups;
if (gdrv) {
gdev->dev.driver = &gdrv->driver;
@ -487,6 +480,7 @@ static void ccwgroup_shutdown(struct device *dev)
static struct bus_type ccwgroup_bus_type = {
.name = "ccwgroup",
.dev_groups = ccwgroup_dev_groups,
.remove = ccwgroup_remove,
.shutdown = ccwgroup_shutdown,
};