netdev - [PATCH net-next V3 1/8] net/mlx4: Replace ENOSYS with better fitting error codes

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Date:   Sun, 29 Jan 2017 18:56:13 +0200
From:   Tariq Toukan <tariqt@...lanox.com>
To:     "David S. Miller" <davem@...emloft.net>
Cc:     netdev@...r.kernel.org, Eran Ben Elisha <eranbe@...lanox.com>,
        Tariq Toukan <tariqt@...lanox.com>
Subject: [PATCH net-next V3 1/8] net/mlx4: Replace ENOSYS with better fitting error codes

Conform the following warning:
WARNING: ENOSYS means 'invalid syscall nr' and nothing else.

Signed-off-by: Tariq Toukan <tariqt@...lanox.com>
---
 drivers/net/ethernet/mellanox/mlx4/en_ethtool.c       | 2 +-
 drivers/net/ethernet/mellanox/mlx4/fw.c               | 2 +-
 drivers/net/ethernet/mellanox/mlx4/main.c             | 6 +++---
 drivers/net/ethernet/mellanox/mlx4/resource_tracker.c | 2 +-
 4 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlx4/en_ethtool.c b/drivers/net/ethernet/mellanox/mlx4/en_ethtool.c
index d5a9372ed84d..17a600b9f81b 100644
--- a/drivers/net/ethernet/mellanox/mlx4/en_ethtool.c
+++ b/drivers/net/ethernet/mellanox/mlx4/en_ethtool.c
@@ -1980,7 +1980,7 @@ static int mlx4_en_get_module_info(struct net_device *dev,
 		modinfo->eeprom_len = ETH_MODULE_SFF_8472_LEN;
 		break;
 	default:
-		return -ENOSYS;
+		return -EINVAL;
 	}
 
 	return 0;
diff --git a/drivers/net/ethernet/mellanox/mlx4/fw.c b/drivers/net/ethernet/mellanox/mlx4/fw.c
index 84bab9f0732e..25b5b32e958f 100644
--- a/drivers/net/ethernet/mellanox/mlx4/fw.c
+++ b/drivers/net/ethernet/mellanox/mlx4/fw.c
@@ -672,7 +672,7 @@ int mlx4_QUERY_FUNC_CAP(struct mlx4_dev *dev, u8 gen_or_port,
 	MLX4_GET(field, outbox, QUERY_FUNC_CAP_PHYS_PORT_OFFSET);
 	func_cap->physical_port = field;
 	if (func_cap->physical_port != gen_or_port) {
-		err = -ENOSYS;
+		err = -EINVAL;
 		goto out;
 	}
 
diff --git a/drivers/net/ethernet/mellanox/mlx4/main.c b/drivers/net/ethernet/mellanox/mlx4/main.c
index bffa6f345f2f..15ef787e71ba 100644
--- a/drivers/net/ethernet/mellanox/mlx4/main.c
+++ b/drivers/net/ethernet/mellanox/mlx4/main.c
@@ -838,7 +838,7 @@ static int mlx4_slave_cap(struct mlx4_dev *dev)
 	 */
 	if (hca_param.global_caps) {
 		mlx4_err(dev, "Unknown hca global capabilities\n");
-		return -ENOSYS;
+		return -EINVAL;
 	}
 
 	mlx4_log_num_mgm_entry_size = hca_param.log_mc_entry_sz;
@@ -896,7 +896,7 @@ static int mlx4_slave_cap(struct mlx4_dev *dev)
 	    PF_CONTEXT_BEHAVIOUR_MASK) {
 		mlx4_err(dev, "Unknown pf context behaviour %x known flags %x\n",
 			 func_cap.pf_context_behaviour, PF_CONTEXT_BEHAVIOUR_MASK);
-		return -ENOSYS;
+		return -EINVAL;
 	}
 
 	dev->caps.num_ports		= func_cap.num_ports;
@@ -3492,7 +3492,7 @@ static int mlx4_load_one(struct pci_dev *pdev, int pci_dev_data,
 	mlx4_enable_msi_x(dev);
 	if ((mlx4_is_mfunc(dev)) &&
 	    !(dev->flags & MLX4_FLAG_MSI_X)) {
-		err = -ENOSYS;
+		err = -EOPNOTSUPP;
 		mlx4_err(dev, "INTx is not supported in multi-function mode, aborting\n");
 		goto err_free_eq;
 	}
diff --git a/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c b/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c
index 6da6e01d07bd..84c74a79752a 100644
--- a/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c
+++ b/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c
@@ -1396,7 +1396,7 @@ static int remove_ok(struct res_common *res, enum mlx4_resource type, int extra)
 	case RES_MTT:
 		return remove_mtt_ok((struct res_mtt *)res, extra);
 	case RES_MAC:
-		return -ENOSYS;
+		return -EOPNOTSUPP;
 	case RES_EQ:
 		return remove_eq_ok((struct res_eq *)res);
 	case RES_COUNTER:
-- 
1.8.3.1