Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

[cascardo/linux.git] / drivers / net / xen-netback / xenbus.c

diff --git a/drivers/net/xen-netback/xenbus.c b/drivers/net/xen-netback/xenbus.c
index bacf6e0..9911b4e 100644 (file)
--- a/drivers/net/xen-netback/xenbus.c
+++ b/drivers/net/xen-netback/xenbus.c
@@ -304,6 +304,11 @@ static int netback_probe(struct xenbus_device *dev,
        be->dev = dev;
        dev_set_drvdata(&dev->dev, be);
 
+       be->state = XenbusStateInitialising;
+       err = xenbus_switch_state(dev, XenbusStateInitialising);
+       if (err)
+               goto fail;
+
        sg = 1;
 
        do {
@@ -416,11 +421,6 @@ static int netback_probe(struct xenbus_device *dev,
 
        be->hotplug_script = script;
 
-       err = xenbus_switch_state(dev, XenbusStateInitWait);
-       if (err)
-               goto fail;
-
-       be->state = XenbusStateInitWait;
 
        /* This kicks hotplug scripts, so do it immediately. */
        err = backend_create_xenvif(be);
@@ -525,20 +525,20 @@ static inline void backend_switch_state(struct backend_info *be,
 
 /* Handle backend state transitions:
  *
- * The backend state starts in InitWait and the following transitions are
+ * The backend state starts in Initialising and the following transitions are
  * allowed.
  *
- * InitWait -> Connected
- *
- *    ^    \         |
- *    |     \        |
- *    |      \       |
- *    |       \      |
- *    |        \     |
- *    |         \    |
- *    |          V   V
+ * Initialising -> InitWait -> Connected
+ *          \
+ *           \        ^    \         |
+ *            \       |     \        |
+ *             \      |      \       |
+ *              \     |       \      |
+ *               \    |        \     |
+ *                \   |         \    |
+ *                 V  |          V   V
  *
- *  Closed  <-> Closing
+ *                  Closed  <-> Closing
  *
  * The state argument specifies the eventual state of the backend and the
  * function transitions to that state via the shortest path.
@@ -548,6 +548,20 @@ static void set_backend_state(struct backend_info *be,
 {
        while (be->state != state) {
                switch (be->state) {
+               case XenbusStateInitialising:
+                       switch (state) {
+                       case XenbusStateInitWait:
+                       case XenbusStateConnected:
+                       case XenbusStateClosing:
+                               backend_switch_state(be, XenbusStateInitWait);
+                               break;
+                       case XenbusStateClosed:
+                               backend_switch_state(be, XenbusStateClosed);
+                               break;
+                       default:
+                               BUG();
+                       }
+                       break;
                case XenbusStateClosed:
                        switch (state) {
                        case XenbusStateInitWait: