Merge remote-tracking branch 'remotes/cohuck/tags/s390x-20150714' into staging

s390x fixes for 2.4:
- virtio migration regression
- missing diag288 watchdog resets

# gpg: Signature made Tue Jul 14 18:17:54 2015 BST using RSA key ID C6F02FAF
# gpg: Good signature from "Cornelia Huck <huckc@linux.vnet.ibm.com>"
# gpg:                 aka "Cornelia Huck <cornelia.huck@de.ibm.com>"

* remotes/cohuck/tags/s390x-20150714:
  s390/virtio-ccw: Fix migration
  watchdog/diag288: correctly register for system reset requests
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

hw/s390x/s390-virtio-ccw.c

@@ -36,7 +36,7 @@ typedef struct S390CcwMachineState {
 
 void io_subsystem_reset(void)
 {
-    DeviceState *css, *sclp, *flic;
+    DeviceState *css, *sclp, *flic, *diag288;
 
     css = DEVICE(object_resolve_path_type("", "virtual-css-bridge", NULL));
     if (css) {
@@ -51,6 +51,10 @@ void io_subsystem_reset(void)
     if (flic) {
         qdev_reset_all(flic);
     }
+    diag288 = DEVICE(object_resolve_path_type("", "diag288", NULL));
+    if (diag288) {
+        qdev_reset_all(diag288);
+    }
 }
 
 static int virtio_ccw_hcall_notify(const uint64_t *args)

hw/s390x/virtio-ccw.c

@@ -1508,12 +1508,12 @@ static int virtio_ccw_load_config(DeviceState *d, QEMUFile *f)
     qemu_get_be16s(f, &vdev->config_vector);
     dev->routes.adapter.ind_offset = qemu_get_be64(f);
     dev->thinint_isc = qemu_get_byte(f);
+    dev->revision = qemu_get_be32(f);
     if (s->thinint_active) {
         return css_register_io_adapter(CSS_IO_ADAPTER_VIRTIO,
                                        dev->thinint_isc, true, false,
                                        &dev->routes.adapter.adapter_id);
     }
-    dev->revision = qemu_get_be32(f);
 
     return 0;
 }

hw/watchdog/wdt_diag288.c

@@ -40,6 +40,13 @@ static void wdt_diag288_reset(DeviceState *dev)
     timer_del(diag288->timer);
 }
 
+static void diag288_reset(void *opaque)
+{
+    DeviceState *diag288 = opaque;
+
+    wdt_diag288_reset(diag288);
+}
+
 static void diag288_timer_expired(void *dev)
 {
     qemu_log_mask(CPU_LOG_RESET, "Watchdog timer expired.\n");
@@ -80,6 +87,7 @@ static void wdt_diag288_realize(DeviceState *dev, Error **errp)
 {
     DIAG288State *diag288 = DIAG288(dev);
 
+    qemu_register_reset(diag288_reset, diag288);
     diag288->timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, diag288_timer_expired,
                                   dev);
 }