Driver core: add groups support to struct device
This is needed for the network class devices in order to be able to
convert over to use struct device.
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/base/core.c b/drivers/base/core.c
index 5d4b7e0..641c0c4 100644
--- a/drivers/base/core.c
+++ b/drivers/base/core.c
@@ -197,6 +197,35 @@
return count;
}
+static int device_add_groups(struct device *dev)
+{
+ int i;
+ int error = 0;
+
+ if (dev->groups) {
+ for (i = 0; dev->groups[i]; i++) {
+ error = sysfs_create_group(&dev->kobj, dev->groups[i]);
+ if (error) {
+ while (--i >= 0)
+ sysfs_remove_group(&dev->kobj, dev->groups[i]);
+ goto out;
+ }
+ }
+ }
+out:
+ return error;
+}
+
+static void device_remove_groups(struct device *dev)
+{
+ int i;
+ if (dev->groups) {
+ for (i = 0; dev->groups[i]; i++) {
+ sysfs_remove_group(&dev->kobj, dev->groups[i]);
+ }
+ }
+}
+
static ssize_t show_dev(struct device *dev, struct device_attribute *attr,
char *buf)
{
@@ -350,6 +379,8 @@
sysfs_create_link(&dev->parent->kobj, &dev->kobj, class_name);
}
+ if ((error = device_add_groups(dev)))
+ goto GroupError;
if ((error = device_pm_add(dev)))
goto PMError;
if ((error = bus_add_device(dev)))
@@ -376,6 +407,8 @@
BusError:
device_pm_remove(dev);
PMError:
+ device_remove_groups(dev);
+ GroupError:
if (dev->devt_attr) {
device_remove_file(dev, dev->devt_attr);
kfree(dev->devt_attr);
@@ -470,6 +503,7 @@
up(&dev->class->sem);
}
device_remove_file(dev, &dev->uevent_attr);
+ device_remove_groups(dev);
/* Notify the platform of the removal, in case they
* need to do anything...