Merge branch 'mlx4-next'

Or Gerlitz says:

====================
mlx4_core driver updates

A series from Jack and Co of low-level fixes for the mlx4_core driver
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/mellanox/mlx4/cmd.c

@@ -580,8 +580,18 @@ static int mlx4_cmd_wait(struct mlx4_dev *dev, u64 in_param, u64 *out_param,
 
 	err = context->result;
 	if (err) {
-		mlx4_err(dev, "command 0x%x failed: fw status = 0x%x\n",
-			 op, context->fw_status);
+		/* Since we do not want to have this error message always
+		 * displayed at driver start when there are ConnectX2 HCAs
+		 * on the host, we deprecate the error message for this
+		 * specific command/input_mod/opcode_mod/fw-status to be debug.
+		 */
+		if (op == MLX4_CMD_SET_PORT && in_modifier == 1 &&
+		    op_modifier == 0 && context->fw_status == CMD_STAT_BAD_SIZE)
+			mlx4_dbg(dev, "command 0x%x failed: fw status = 0x%x\n",
+				 op, context->fw_status);
+		else
+			mlx4_err(dev, "command 0x%x failed: fw status = 0x%x\n",
+				 op, context->fw_status);
 		goto out;
 	}
 

drivers/net/ethernet/mellanox/mlx4/fw.c

@@ -982,8 +982,13 @@ int mlx4_QUERY_PORT_wrapper(struct mlx4_dev *dev, int slave,
 	if (port < 0)
 		return -EINVAL;
 
-	vhcr->in_modifier = (vhcr->in_modifier & ~0xFF) |
-			    (port & 0xFF);
+	/* Protect against untrusted guests: enforce that this is the
+	 * QUERY_PORT general query.
+	 */
+	if (vhcr->op_modifier || vhcr->in_modifier & ~0xFF)
+		return -EINVAL;
+
+	vhcr->in_modifier = port;
 
 	err = mlx4_cmd_box(dev, 0, outbox->dma, vhcr->in_modifier, 0,
 			   MLX4_CMD_QUERY_PORT, MLX4_CMD_TIME_CLASS_B,