From: Ziyang Xuan <william.xuanziyang@xxxxxxxxxx>
[ Upstream commit 848ffce2f0c93f3481052340a919123a21f808b6 ]
octep_get_mac_addr() can fail because send mbox message failed. If this
happens, octep_dev->mac_addr will be zero. It should not continue to
initialize. Add exception handling for octep_get_mac_addr() to fix it.
Fixes: 862cd659a6fb ("octeon_ep: Add driver framework and device initialization")
Signed-off-by: Ziyang Xuan <william.xuanziyang@xxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/net/ethernet/marvell/octeon_ep/octep_main.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/marvell/octeon_ep/octep_main.c b/drivers/net/ethernet/marvell/octeon_ep/octep_main.c
index ac1e37afbe7b..8a6a81bcec5c 100644
--- a/drivers/net/ethernet/marvell/octeon_ep/octep_main.c
+++ b/drivers/net/ethernet/marvell/octeon_ep/octep_main.c
@@ -1072,7 +1072,11 @@ static int octep_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
netdev->max_mtu = OCTEP_MAX_MTU;
netdev->mtu = OCTEP_DEFAULT_MTU;
- octep_get_mac_addr(octep_dev, octep_dev->mac_addr);
+ err = octep_get_mac_addr(octep_dev, octep_dev->mac_addr);
+ if (err) {
+ dev_err(&pdev->dev, "Failed to get mac address\n");
+ goto register_dev_err;
+ }
eth_hw_addr_set(netdev, octep_dev->mac_addr);
err = register_netdev(netdev);
--
2.35.1
