enic: check return value for stat dump

[cascardo/linux.git] / drivers / net / ethernet / cisco / enic / enic_main.c

diff --git a/drivers/net/ethernet/cisco/enic/enic_main.c b/drivers/net/ethernet/cisco/enic/enic_main.c
index 0e5a01d..eadae1b 100644 (file)
--- a/drivers/net/ethernet/cisco/enic/enic_main.c
+++ b/drivers/net/ethernet/cisco/enic/enic_main.c
@@ -615,8 +615,15 @@ static struct rtnl_link_stats64 *enic_get_stats(struct net_device *netdev,
 {
        struct enic *enic = netdev_priv(netdev);
        struct vnic_stats *stats;
+       int err;
 
-       enic_dev_stats_dump(enic, &stats);
+       err = enic_dev_stats_dump(enic, &stats);
+       /* return only when pci_zalloc_consistent fails in vnic_dev_stats_dump
+        * For other failures, like devcmd failure, we return previously
+        * recorded stats.
+        */
+       if (err == -ENOMEM)
+               return net_stats;
 
        net_stats->tx_packets = stats->tx.tx_frames_ok;
        net_stats->tx_bytes = stats->tx.tx_bytes_ok;