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From foo@baz Tue Apr 9 12:12:43 2002
Date: Tue, 27 Jun 2006 00:06:09 -0700
To: Greg KH <greg@kroah.com>
From: Greg Kroah-Hartman <gregkh@suse.de>
Subject: 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>
---
drivers/base/core.c | 34 ++++++++++++++++++++++++++++++++++
include/linux/device.h | 1 +
2 files changed, 35 insertions(+)
--- gregkh-2.6.orig/drivers/base/core.c
+++ gregkh-2.6/drivers/base/core.c
@@ -193,6 +193,35 @@ static ssize_t store_uevent(struct devic
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)
{
@@ -346,6 +375,8 @@ int device_add(struct device *dev)
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)))
@@ -372,6 +403,8 @@ int device_add(struct device *dev)
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);
@@ -466,6 +499,7 @@ void device_del(struct device * dev)
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...
--- gregkh-2.6.orig/include/linux/device.h
+++ gregkh-2.6/include/linux/device.h
@@ -345,6 +345,7 @@ struct device {
struct list_head node;
struct class *class; /* optional*/
dev_t devt; /* dev_t, creates the sysfs "dev" */
+ struct attribute_group **groups; /* optional groups */
void (*release)(struct device * dev);
};
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