Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/driver-2.6

* master.kernel.org:/pub/scm/linux/kernel/git/gregkh/driver-2.6: (46 commits)
  dev_dbg: check dev_dbg() arguments
  drivers/base/attribute_container.c: use mutex instead of binary semaphore
  mod_sysfs_setup() doesn't return errno when kobject_add_dir() failure occurs
  s2ram: add arch irq disable/enable hooks
  define platform wakeup hook, use in pci_enable_wake()
  security: prevent permission checking of file removal via sysfs_remove_group()
  device_schedule_callback() needs a module reference
  s390: cio: Delay uevents for subchannels
  sysfs: bin.c printk fix
  Driver core: use mutex instead of semaphore in DMA pool handler
  driver core: bus_add_driver should return an error if no bus
  debugfs: Add debugfs_create_u64()
  the overdue removal of the mount/umount uevents
  kobject: Comment and warning fixes to kobject.c
  Driver core: warn when userspace writes to the uevent file in a non-supported way
  Driver core: make uevent-environment available in uevent-file
  kobject core: remove rwsem from struct subsystem
  qeth: Remove usage of subsys.rwsem
  PHY: remove rwsem use from phy core
  IEEE1394: remove rwsem use from ieee1394 core
  ...

1 files changed, 16 insertions, 11 deletions

diff --git a/net/core/net-sysfs.c b/net/core/net-sysfs.c
index 221a64ab64f7..b21307b15b82 100644
--- a/net/core/net-sysfs.c
+++ b/net/core/net-sysfs.c
@@ -412,20 +412,25 @@ static int netdev_uevent(struct device *d, char **envp,
                          int num_envp, char *buf, int size)
 {
         struct net_device *dev = to_net_dev(d);
-        int i = 0;
-        int n;
+        int retval, len = 0, i = 0;
 
         /* pass interface to uevent. */
-        envp[i++] = buf;
-        n = snprintf(buf, size, "INTERFACE=%s", dev->name) + 1;
-        buf += n;
-        size -= n;
-
-        if ((size <= 0) || (i >= num_envp))
-                return -ENOMEM;
-
+        retval = add_uevent_var(envp, num_envp, &i,
+                                buf, size, &len,
+                                "INTERFACE=%s", dev->name);
+        if (retval)
+                goto exit;
+
+        /* pass ifindex to uevent.
+         * ifindex is useful as it won't change (interface name may change)
+         * and is what RtNetlink uses natively. */
+        retval = add_uevent_var(envp, num_envp, &i,
+                                buf, size, &len,
+                                "IFINDEX=%d", dev->ifindex);
+
+exit:
         envp[i] = NULL;
-        return 0;
+        return retval;
 }
 #endif