Driver: add driver_add_kobj for looney iseries_veth driver

The iseries driver wants to hang kobjects off of its driver, so, to
preserve backwards compatibility, we need to add a call to the driver
core to allow future changes to work properly.

Hopefully no one uses this function in the future and the iseries_veth
driver authors come to their senses so I can remove this hack...

Cc: Dave Larson <larson1@us.ibm.com>
Cc: Santiago Leon <santil@us.ibm.com>
Cc: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

3 files changed, 29 insertions, 1 deletions

diff --git a/drivers/base/driver.c b/drivers/base/driver.c
index e3b58407fedc..633ae1d70e14 100644
--- a/drivers/base/driver.c
+++ b/drivers/base/driver.c
@@ -124,6 +124,30 @@ void driver_remove_file(struct device_driver * drv, struct driver_attribute * at
 
 
 /**
+ * driver_add_kobj - add a kobject below the specified driver
+ *
+ * You really don't want to do this, this is only here due to one looney
+ * iseries driver, go poke those developers if you are annoyed about
+ * this...
+ */
+int driver_add_kobj(struct device_driver *drv, struct kobject *kobj,
+                    const char *fmt, ...)
+{
+        va_list args;
+        char *name;
+
+        va_start(args, fmt);
+        name = kvasprintf(GFP_KERNEL, fmt, args);
+        va_end(args);
+
+        if (!name)
+                return -ENOMEM;
+
+        return kobject_add_ng(kobj, &drv->kobj, "%s", name);
+}
+EXPORT_SYMBOL_GPL(driver_add_kobj);
+
+/**
  *      get_driver - increment driver reference count.
  *      @drv:   driver.
  */
diff --git a/drivers/net/iseries_veth.c b/drivers/net/iseries_veth.c
index 90ff4ec5f6fc..1a8299acd3f1 100644
--- a/drivers/net/iseries_veth.c
+++ b/drivers/net/iseries_veth.c
@@ -1705,7 +1705,7 @@ static int __init veth_module_init(void)
 
                 kobj = &veth_cnx[i]->kobject;
                 /* If the add failes, complain but otherwise continue */
-                if (0 != kobject_add_ng(kobj, &veth_driver.driver.kobj,
+                if (0 != driver_add_kobj(&veth_driver.driver, kobj,
                                         "cnx%.2d", veth_cnx[i]->remote_lp))
                         veth_error("cnx %d: Failed adding to sysfs.\n", i);
         }
diff --git a/include/linux/device.h b/include/linux/device.h
index d974dda4aa51..721ee318d57b 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -156,6 +156,10 @@ extern int __must_check driver_create_file(struct device_driver *,
                                         struct driver_attribute *);
 extern void driver_remove_file(struct device_driver *, struct driver_attribute *);
 
+extern int __must_check driver_add_kobj(struct device_driver *drv,
+                                        struct kobject *kobj,
+                                        const char *fmt, ...);
+
 extern int __must_check driver_for_each_device(struct device_driver * drv,
                 struct device *start, void *data,
                 int (*fn)(struct device *, void *));