4 files changed, 13 insertions, 4 deletions

diff --git a/drivers/net/mlx4/cmd.c b/drivers/net/mlx4/cmd.c
index 2845a0560b84..65ec77dc31f5 100644
--- a/drivers/net/mlx4/cmd.c
+++ b/drivers/net/mlx4/cmd.c
@@ -80,7 +80,9 @@ enum {
         /* Bad management packet (silently discarded): */
         CMD_STAT_BAD_PKT        = 0x30,
         /* More outstanding CQEs in CQ than new CQ size: */
-        CMD_STAT_BAD_SIZE       = 0x40
+        CMD_STAT_BAD_SIZE       = 0x40,
+        /* Multi Function device support required: */
+        CMD_STAT_MULTI_FUNC_REQ = 0x50,
 };
 
 enum {
@@ -128,6 +130,7 @@ static int mlx4_status_to_errno(u8 status)
                 [CMD_STAT_LAM_NOT_PRE]    = -EAGAIN,
                 [CMD_STAT_BAD_PKT]        = -EINVAL,
                 [CMD_STAT_BAD_SIZE]       = -ENOMEM,
+                [CMD_STAT_MULTI_FUNC_REQ] = -EACCES,
         };
 
         if (status >= ARRAY_SIZE(trans_table) ||
diff --git a/drivers/net/mlx4/en_rx.c b/drivers/net/mlx4/en_rx.c
index cd084de322f4..03b781a7a182 100644
--- a/drivers/net/mlx4/en_rx.c
+++ b/drivers/net/mlx4/en_rx.c
@@ -462,8 +462,9 @@ static int mlx4_en_complete_rx_desc(struct mlx4_en_priv *priv,
                                  PCI_DMA_FROMDEVICE);
         }
         /* Adjust size of last fragment to match actual length */
-        skb_frags_rx[nr - 1].size = length -
-                priv->frag_info[nr - 1].frag_prefix_size;
+        if (nr > 0)
+                skb_frags_rx[nr - 1].size = length -
+                        priv->frag_info[nr - 1].frag_prefix_size;
         return nr;
 
 fail:
diff --git a/drivers/net/mlx4/en_tx.c b/drivers/net/mlx4/en_tx.c
index cbc8ab0c6d12..0ecc1e1b013e 100644
--- a/drivers/net/mlx4/en_tx.c
+++ b/drivers/net/mlx4/en_tx.c
@@ -249,6 +249,7 @@ static u32 mlx4_en_free_tx_desc(struct mlx4_en_priv *priv,
                                 pci_unmap_page(mdev->pdev,
                                         (dma_addr_t) be64_to_cpu(data->addr),
                                          frag->size, PCI_DMA_TODEVICE);
+                                ++data;
                         }
                 }
                 /* Stamp the freed descriptor */
diff --git a/drivers/net/mlx4/main.c b/drivers/net/mlx4/main.c
index 018348c01193..dac621b1e9fc 100644
--- a/drivers/net/mlx4/main.c
+++ b/drivers/net/mlx4/main.c
@@ -729,7 +729,10 @@ static int mlx4_init_hca(struct mlx4_dev *dev)
 
         err = mlx4_QUERY_FW(dev);
         if (err) {
-                mlx4_err(dev, "QUERY_FW command failed, aborting.\n");
+                if (err == -EACCES)
+                        mlx4_info(dev, "non-primary physical function, skipping.\n");
+                else
+                        mlx4_err(dev, "QUERY_FW command failed, aborting.\n");
                 return err;
         }
 
@@ -1285,6 +1288,7 @@ static struct pci_device_id mlx4_pci_table[] = {
         { PCI_VDEVICE(MELLANOX, 0x6750) }, /* MT25408 "Hermon" EN 10GigE PCIe gen2 */
         { PCI_VDEVICE(MELLANOX, 0x6372) }, /* MT25458 ConnectX EN 10GBASE-T 10GigE */
         { PCI_VDEVICE(MELLANOX, 0x675a) }, /* MT25458 ConnectX EN 10GBASE-T+Gen2 10GigE */
+        { PCI_VDEVICE(MELLANOX, 0x6764) }, /* MT26468 ConnectX EN 10GigE PCIe gen2*/
         { 0, }
 };