+ while ((fw_event = dequeue_next_fw_event(ioc))) {
+ /*
+ * Wait on the fw_event to complete. If this returns 1, then
+ * the event was never executed, and we need a put for the
+ * reference the delayed_work had on the fw_event.
+ *
+ * If it did execute, we wait for it to finish, and the put will
+ * happen from _firmware_event_work()
+ */
+ if (cancel_work_sync(&fw_event->work))
+ fw_event_work_put(fw_event);
+
+ fw_event_work_put(fw_event);
+ }
+}
+
+/**
+ * _scsih_internal_device_block - block the sdev device
+ * @sdev: per device object
+ * @sas_device_priv_data : per device driver private data
+ *
+ * make sure device is blocked without error, if not
+ * print an error
+ */
+static void
+_scsih_internal_device_block(struct scsi_device *sdev,
+ struct MPT3SAS_DEVICE *sas_device_priv_data)
+{
+ int r = 0;
+
+ sdev_printk(KERN_INFO, sdev, "device_block, handle(0x%04x)\n",
+ sas_device_priv_data->sas_target->handle);
+ sas_device_priv_data->block = 1;
+
+ r = scsi_internal_device_block(sdev);
+ if (r == -EINVAL)
+ sdev_printk(KERN_WARNING, sdev,
+ "device_block failed with return(%d) for handle(0x%04x)\n",
+ sas_device_priv_data->sas_target->handle, r);
+}
+
+/**
+ * _scsih_internal_device_unblock - unblock the sdev device
+ * @sdev: per device object
+ * @sas_device_priv_data : per device driver private data
+ * make sure device is unblocked without error, if not retry
+ * by blocking and then unblocking
+ */
+
+static void
+_scsih_internal_device_unblock(struct scsi_device *sdev,
+ struct MPT3SAS_DEVICE *sas_device_priv_data)
+{
+ int r = 0;
+
+ sdev_printk(KERN_WARNING, sdev, "device_unblock and setting to running, "
+ "handle(0x%04x)\n", sas_device_priv_data->sas_target->handle);
+ sas_device_priv_data->block = 0;
+ r = scsi_internal_device_unblock(sdev, SDEV_RUNNING);
+ if (r == -EINVAL) {
+ /* The device has been set to SDEV_RUNNING by SD layer during
+ * device addition but the request queue is still stopped by
+ * our earlier block call. We need to perform a block again
+ * to get the device to SDEV_BLOCK and then to SDEV_RUNNING */
+
+ sdev_printk(KERN_WARNING, sdev,
+ "device_unblock failed with return(%d) for handle(0x%04x) "
+ "performing a block followed by an unblock\n",
+ sas_device_priv_data->sas_target->handle, r);
+ sas_device_priv_data->block = 1;
+ r = scsi_internal_device_block(sdev);
+ if (r)
+ sdev_printk(KERN_WARNING, sdev, "retried device_block "
+ "failed with return(%d) for handle(0x%04x)\n",
+ sas_device_priv_data->sas_target->handle, r);
+
+ sas_device_priv_data->block = 0;
+ r = scsi_internal_device_unblock(sdev, SDEV_RUNNING);
+ if (r)
+ sdev_printk(KERN_WARNING, sdev, "retried device_unblock"
+ " failed with return(%d) for handle(0x%04x)\n",
+ sas_device_priv_data->sas_target->handle, r);