ibmvnic: skip send_request_unmap for timeout reset

Timeout reset will trigger the VIOS to unmap it automatically,
similarly as FAILVOER and MOBILITY events. If we unmap it
in the linux side, we will see errors like
"30000003: Error 4 in REQUEST_UNMAP_RSP".
So, don't call send_request_unmap for timeout reset.

Fixes: ed651a10875f ("ibmvnic: Updated reset handling")
Signed-off-by: Lijun Pan <ljp@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/ibm/ibmvnic.c b/drivers/net/ethernet/ibm/ibmvnic.c
index f6402a20ba320bb36059d7e97eea6690cb980c51..cd201f89ce6c009534b40fc7d6e72ca11ab35a06 100644 (file)
--- a/drivers/net/ethernet/ibm/ibmvnic.c
+++ b/drivers/net/ethernet/ibm/ibmvnic.c
@@ -247,8 +247,13 @@ static void free_long_term_buff(struct ibmvnic_adapter *adapter,
        if (!ltb->buff)
                return;
 
+       /* VIOS automatically unmaps the long term buffer at remote
+        * end for the following resets:
+        * FAILOVER, MOBILITY, TIMEOUT.
+        */
        if (adapter->reset_reason != VNIC_RESET_FAILOVER &&
-           adapter->reset_reason != VNIC_RESET_MOBILITY)
+           adapter->reset_reason != VNIC_RESET_MOBILITY &&
+           adapter->reset_reason != VNIC_RESET_TIMEOUT)
                send_request_unmap(adapter, ltb->map_id);
        dma_free_coherent(dev, ltb->size, ltb->buff, ltb->addr);
 }