This is a note to let you know that I've just added the patch titled ibmvnic: skip send_request_unmap for timeout reset to the 5.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: ibmvnic-skip-send_request_unmap-for-timeout-reset.patch and it can be found in the queue-5.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit 199a2185f304edacc8a32ea19107b087c9e152cb Author: Lijun Pan <ljp@xxxxxxxxxxxxx> Date: Fri Feb 12 20:49:00 2021 -0600 ibmvnic: skip send_request_unmap for timeout reset [ Upstream commit 7d3a7b9ea59ddb223aec59b45fa1713c633aaed4 ] 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@xxxxxxxxxxxxx> Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/drivers/net/ethernet/ibm/ibmvnic.c b/drivers/net/ethernet/ibm/ibmvnic.c index 901883a44a320..309cdc5ebc1ff 100644 --- a/drivers/net/ethernet/ibm/ibmvnic.c +++ b/drivers/net/ethernet/ibm/ibmvnic.c @@ -202,8 +202,13 @@ 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); }