[SCSI] ibmvscsi: handle re-enable firmware message

New versions of the Power5 firmware can send a "re-enable" message to
the virtual scsi adapter.  This fix makes us handle the message
correctly.  Without it, the driver goes catatonic and the system crashes
unpleasantly.

Signed-off-by: Dave Boutcher <sleddog@us.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

1 files changed, 13 insertions, 0 deletions

diff --git a/drivers/scsi/ibmvscsi/iseries_vscsi.c b/drivers/scsi/ibmvscsi/iseries_vscsi.c
index ce15d9e39621..7eed0b098171 100644
--- a/drivers/scsi/ibmvscsi/iseries_vscsi.c
+++ b/drivers/scsi/ibmvscsi/iseries_vscsi.c
@@ -124,6 +124,19 @@ int ibmvscsi_reset_crq_queue(struct crq_queue *queue,
 }
 
 /**
+ * reenable_crq_queue: - reenables a crq after a failure
+ * @queue:      crq_queue to initialize and register
+ * @hostdata:   ibmvscsi_host_data of host
+ *
+ * no-op for iSeries
+ */
+int ibmvscsi_reenable_crq_queue(struct crq_queue *queue,
+                                struct ibmvscsi_host_data *hostdata)
+{
+        return 0;
+}
+
+/**
  * ibmvscsi_send_crq: - Send a CRQ
  * @hostdata:   the adapter
  * @word1:      the first 64 bits of the data