[PATCH AUTOSEL for 4.15 127/189] ibmvnic: fix firmware version when no firmware level has been provided by the VIOS server

[Sasha Levin]

From: Desnes Augusto Nunes do Rosario <desnesn@xxxxxxxxxxxxxxxxxx>

[ Upstream commit a107311d7fdf6b826f3737c4a90fd0e0046e7a3a ]

Older versions of VIOS servers do not send the firmware level in the VPD
buffer for the ibmvnic driver. Thus, not only the current message is mis-
leading but the firmware version in the ethtool will be NULL. Therefore,
this patch fixes the firmware string and its warning.

Fixes: 4e6759be28e4 ("ibmvnic: Feature implementation of VPD for the ibmvnic driver")
Signed-off-by: Desnes A. Nunes do Rosario <desnesn@xxxxxxxxxxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxxxx>
---
 drivers/net/ethernet/ibm/ibmvnic.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/ibm/ibmvnic.c b/drivers/net/ethernet/ibm/ibmvnic.c
index d4e87333bac2..4ba49a98c689 100644
--- a/drivers/net/ethernet/ibm/ibmvnic.c
+++ b/drivers/net/ethernet/ibm/ibmvnic.c
@@ -3294,7 +3294,11 @@ static void handle_vpd_rsp(union ibmvnic_crq *crq,
 	 */
 	substr = strnstr(adapter->vpd->buff, "RM", adapter->vpd->len);
 	if (!substr) {
-		dev_info(dev, "No FW level provided by VPD\n");
+		dev_info(dev, "Warning - No FW level has been provided in the VPD buffer by the VIOS Server\n");
+		ptr = strncpy((char *)adapter->fw_version, "N/A",
+			      3 * sizeof(char));
+		if (!ptr)
+			dev_err(dev, "Failed to inform that firmware version is unavailable to the adapter\n");
 		goto complete;
 	}
 
-- 
2.15.1