[PATCH net 2/3] nfp: drop support for old firmware ABIs

[Jakub Kicinski]

Be more strict about FW versions.  Drop support for old
transitional revisions which were never used in production.
Dropping support for FW ABI version 0.0.0.0 is particularly
useful because 0 could just be uninitialized memory.

Signed-off-by: Jakub Kicinski <jakub.kicin...@netronome.com>
Reviewed-by: Dinan Gunawardena <dinan.gunaward...@netronome.com>
---
 drivers/net/ethernet/netronome/nfp/nfp_netvf_main.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/net/ethernet/netronome/nfp/nfp_netvf_main.c 
b/drivers/net/ethernet/netronome/nfp/nfp_netvf_main.c
index 6f22b0e12ac7..f7062cb648e1 100644
--- a/drivers/net/ethernet/netronome/nfp/nfp_netvf_main.c
+++ b/drivers/net/ethernet/netronome/nfp/nfp_netvf_main.c
@@ -133,7 +133,7 @@ static int nfp_netvf_pci_probe(struct pci_dev *pdev,
        }
 
        nfp_net_get_fw_version(&fw_ver, ctrl_bar);
-       if (fw_ver.class != NFP_NET_CFG_VERSION_CLASS_GENERIC) {
+       if (fw_ver.resv || fw_ver.class != NFP_NET_CFG_VERSION_CLASS_GENERIC) {
                dev_err(&pdev->dev, "Unknown Firmware ABI %d.%d.%d.%d\n",
                        fw_ver.resv, fw_ver.class, fw_ver.major, fw_ver.minor);
                err = -EINVAL;
@@ -141,9 +141,7 @@ static int nfp_netvf_pci_probe(struct pci_dev *pdev,
        }
 
        /* Determine stride */
-       if (nfp_net_fw_ver_eq(&fw_ver, 0, 0, 0, 0) ||
-           nfp_net_fw_ver_eq(&fw_ver, 0, 0, 0, 1) ||
-           nfp_net_fw_ver_eq(&fw_ver, 0, 0, 0x12, 0x48)) {
+       if (nfp_net_fw_ver_eq(&fw_ver, 0, 0, 0, 1)) {
                stride = 2;
                tx_bar_no = NFP_NET_Q0_BAR;
                rx_bar_no = NFP_NET_Q1_BAR;
-- 
1.9.1