+static ssize_t name_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct ibmebus_dev *ebus_dev = to_ibmebus_dev(dev);
+ const char *name = of_get_property(ebus_dev->ofdev.node, "name", NULL);
+ return sprintf(buf, "%s\n", name);
+}
+
+static struct device_attribute ibmebus_dev_attrs[] = {
+ __ATTR_RO(name),
+ __ATTR_NULL
+};
+
+static int ibmebus_match_path(struct device *dev, void *data)
+{
+ int rc;
+ struct device_node *dn =
+ of_node_get(to_ibmebus_dev(dev)->ofdev.node);
+
+ rc = (dn->full_name && (strcasecmp((char*)data, dn->full_name) == 0));
+
+ of_node_put(dn);
+ return rc;
+}
+
+static char *ibmebus_chomp(const char *in, size_t count)
+{
+ char *out = (char*)kmalloc(count + 1, GFP_KERNEL);
+ if (!out)
+ return NULL;
+
+ memcpy(out, in, count);
+ out[count] = '\0';
+ if (out[count - 1] == '\n')
+ out[count - 1] = '\0';
+
+ return out;
+}
+
+static ssize_t ibmebus_store_probe(struct bus_type *bus,
+ const char *buf, size_t count)
+{
+ struct device_node *dn = NULL;
+ struct ibmebus_dev *dev;
+ char *path;
+ ssize_t rc;
+
+ path = ibmebus_chomp(buf, count);
+ if (!path)
+ return -ENOMEM;
+
+ if (bus_find_device(&ibmebus_bus_type, NULL, path,
+ ibmebus_match_path)) {
+ printk(KERN_WARNING "%s: %s has already been probed\n",
+ __FUNCTION__, path);
+ rc = -EINVAL;
+ goto out;
+ }
+
+ if ((dn = of_find_node_by_path(path))) {
+ dev = ibmebus_register_device_node(dn);
+ of_node_put(dn);
+ rc = IS_ERR(dev) ? PTR_ERR(dev) : count;
+ } else {
+ printk(KERN_WARNING "%s: no such device node: %s\n",
+ __FUNCTION__, path);
+ rc = -ENODEV;
+ }
+
+out:
+ kfree(path);
+ return rc;
+}
+
+static ssize_t ibmebus_store_remove(struct bus_type *bus,
+ const char *buf, size_t count)
+{
+ struct device *dev;
+ char *path;
+
+ path = ibmebus_chomp(buf, count);
+ if (!path)
+ return -ENOMEM;
+
+ if ((dev = bus_find_device(&ibmebus_bus_type, NULL, path,
+ ibmebus_match_path))) {
+ ibmebus_unregister_device(dev);
+
+ kfree(path);
+ return count;
+ } else {
+ printk(KERN_WARNING "%s: %s not on the bus\n",
+ __FUNCTION__, path);
+
+ kfree(path);
+ return -ENODEV;
+ }
+}
+
+static struct bus_attribute ibmebus_bus_attrs[] = {
+ __ATTR(probe, S_IWUSR, NULL, ibmebus_store_probe),
+ __ATTR(remove, S_IWUSR, NULL, ibmebus_store_remove),
+ __ATTR_NULL
+};
+