ethernet: remove redundant memset

kvzalloc already zeroes the memory during the allocation.
pci_alloc_consistent calls dma_alloc_coherent directly.
In commit 518a2f1925c3
("dma-mapping: zero memory returned from dma_alloc_*"),
dma_alloc_coherent has already zeroed the memory.
So the memset after these function is not needed.

Signed-off-by: Fuqian Huang <huangfq.daxian@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/atheros/atlx/atl1.c b/drivers/net/ethernet/atheros/atlx/atl1.c
index 7c767ce..b5c6dc9 100644 (file)
--- a/drivers/net/ethernet/atheros/atlx/atl1.c
+++ b/drivers/net/ethernet/atheros/atlx/atl1.c
@@ -1060,8 +1060,6 @@ static s32 atl1_setup_ring_resources(struct atl1_adapter *adapter)
                goto err_nomem;
        }
 
-       memset(ring_header->desc, 0, ring_header->size);
-
        /* init TPD ring */
        tpd_ring->dma = ring_header->dma;
        offset = (tpd_ring->dma & 0x7) ? (8 - (ring_header->dma & 0x7)) : 0;

diff --git a/drivers/net/ethernet/atheros/atlx/atl2.c b/drivers/net/ethernet/atheros/atlx/atl2.c
index 3a3fb5c..3aba383 100644 (file)
--- a/drivers/net/ethernet/atheros/atlx/atl2.c
+++ b/drivers/net/ethernet/atheros/atlx/atl2.c
@@ -291,7 +291,6 @@ static s32 atl2_setup_ring_resources(struct atl2_adapter *adapter)
                &adapter->ring_dma);
        if (!adapter->ring_vir_addr)
                return -ENOMEM;
-       memset(adapter->ring_vir_addr, 0, adapter->ring_size);
 
        /* Init TXD Ring */
        adapter->txd_dma = adapter->ring_dma ;

diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
index 3f63202..1069eb0 100644 (file)
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
@@ -2677,8 +2677,6 @@ static int bnxt_alloc_tx_rings(struct bnxt *bp)
                        mapping = txr->tx_push_mapping +
                                sizeof(struct tx_push_bd);
                        txr->data_mapping = cpu_to_le64(mapping);
-
-                       memset(txr->tx_push, 0, sizeof(struct tx_push_bd));
                }
                qidx = bp->tc_to_qidx[j];
                ring->queue_id = bp->q_info[qidx].queue_id;

diff --git a/drivers/net/ethernet/chelsio/cxgb4/sched.c b/drivers/net/ethernet/chelsio/cxgb4/sched.c
index ba6c153..60218dc 100644 (file)
--- a/drivers/net/ethernet/chelsio/cxgb4/sched.c
+++ b/drivers/net/ethernet/chelsio/cxgb4/sched.c
@@ -207,7 +207,6 @@ static int t4_sched_queue_bind(struct port_info *pi, struct ch_sched_queue *p)
                goto out_err;
 
        /* Bind queue to specified class */
-       memset(qe, 0, sizeof(*qe));
        qe->cntxt_id = qid;
        memcpy(&qe->param, p, sizeof(qe->param));
 

diff --git a/drivers/net/ethernet/freescale/fec_main.c b/drivers/net/ethernet/freescale/fec_main.c
index 9d459cc..e5610a4 100644 (file)
--- a/drivers/net/ethernet/freescale/fec_main.c
+++ b/drivers/net/ethernet/freescale/fec_main.c
@@ -3144,8 +3144,6 @@ static int fec_enet_init(struct net_device *ndev)
                return -ENOMEM;
        }
 
-       memset(cbd_base, 0, bd_size);
-
        /* Get the Ethernet address */
        fec_get_mac(ndev);
        /* make sure MAC we just acquired is programmed into the hw */

diff --git a/drivers/net/ethernet/jme.c b/drivers/net/ethernet/jme.c
index 76b7b7b..0b66835 100644 (file)
--- a/drivers/net/ethernet/jme.c
+++ b/drivers/net/ethernet/jme.c
@@ -582,11 +582,6 @@ jme_setup_tx_resources(struct jme_adapter *jme)
        if (unlikely(!(txring->bufinf)))
                goto err_free_txring;
 
-       /*
-        * Initialize Transmit Descriptors
-        */
-       memset(txring->alloc, 0, TX_RING_ALLOC_SIZE(jme->tx_ring_size));
-
        return 0;
 
 err_free_txring:

diff --git a/drivers/net/ethernet/marvell/skge.c b/drivers/net/ethernet/marvell/skge.c
index 35a92fd..9ac854c 100644 (file)
--- a/drivers/net/ethernet/marvell/skge.c
+++ b/drivers/net/ethernet/marvell/skge.c
@@ -2558,8 +2558,6 @@ static int skge_up(struct net_device *dev)
                goto free_pci_mem;
        }
 
-       memset(skge->mem, 0, skge->mem_size);
-
        err = skge_ring_alloc(&skge->rx_ring, skge->mem, skge->dma);
        if (err)
                goto free_pci_mem;

diff --git a/drivers/net/ethernet/mellanox/mlx4/eq.c b/drivers/net/ethernet/mellanox/mlx4/eq.c
index a5be277..c790a5f 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx4/eq.c
+++ b/drivers/net/ethernet/mellanox/mlx4/eq.c
@@ -1013,8 +1013,6 @@ static int mlx4_create_eq(struct mlx4_dev *dev, int nent,
 
                dma_list[i] = t;
                eq->page_list[i].map = t;
-
-               memset(eq->page_list[i].buf, 0, PAGE_SIZE);
        }
 
        eq->eqn = mlx4_bitmap_alloc(&priv->eq_table.bitmap);

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c b/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c
index 3b04d89..1f3891f 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c
@@ -2450,7 +2450,6 @@ int mlx5_eswitch_get_vport_stats(struct mlx5_eswitch *esw,
        MLX5_SET(query_vport_counter_in, in, vport_number, vport->vport);
        MLX5_SET(query_vport_counter_in, in, other_vport, 1);
 
-       memset(out, 0, outlen);
        err = mlx5_cmd_exec(esw->dev, in, sizeof(in), out, outlen);
        if (err)
                goto free_out;

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c b/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c
index 957d9b0..089ae4d 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c
@@ -1134,7 +1134,6 @@ static int esw_create_offloads_fdb_tables(struct mlx5_eswitch *esw, int nvports)
        }
 
        /* create send-to-vport group */
-       memset(flow_group_in, 0, inlen);
        MLX5_SET(create_flow_group_in, flow_group_in, match_criteria_enable,
                 MLX5_MATCH_MISC_PARAMETERS);
 
@@ -1293,8 +1292,6 @@ static int esw_create_vport_rx_group(struct mlx5_eswitch *esw, int nvports)
                return -ENOMEM;
 
        /* create vport rx group */
-       memset(flow_group_in, 0, inlen);
-
        esw_set_flow_group_source_port(esw, flow_group_in);
 
        MLX5_SET(create_flow_group_in, flow_group_in, start_flow_index, 0);

diff --git a/drivers/net/ethernet/mellanox/mlxsw/pci.c b/drivers/net/ethernet/mellanox/mlxsw/pci.c
index 051b193..615455a 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlxsw/pci.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/pci.c
@@ -847,7 +847,6 @@ static int mlxsw_pci_queue_init(struct mlxsw_pci *mlxsw_pci, char *mbox,
                                             &mem_item->mapaddr);
        if (!mem_item->buf)
                return -ENOMEM;
-       memset(mem_item->buf, 0, mem_item->size);
 
        q->elem_info = kcalloc(q->count, sizeof(*q->elem_info), GFP_KERNEL);
        if (!q->elem_info) {

diff --git a/drivers/net/ethernet/neterion/s2io.c b/drivers/net/ethernet/neterion/s2io.c
index 3b2ae1a..e0b2bf3 100644 (file)
--- a/drivers/net/ethernet/neterion/s2io.c
+++ b/drivers/net/ethernet/neterion/s2io.c
@@ -747,7 +747,6 @@ static int init_shared_mem(struct s2io_nic *nic)
                                return -ENOMEM;
                        }
                        mem_allocated += size;
-                       memset(tmp_v_addr, 0, size);
 
                        size = sizeof(struct rxd_info) *
                                rxd_count[nic->rxd_mode];

diff --git a/drivers/net/ethernet/qlogic/netxen/netxen_nic_ctx.c b/drivers/net/ethernet/qlogic/netxen/netxen_nic_ctx.c
index 433052f..5e9f8ee 100644 (file)
--- a/drivers/net/ethernet/qlogic/netxen/netxen_nic_ctx.c
+++ b/drivers/net/ethernet/qlogic/netxen/netxen_nic_ctx.c
@@ -442,10 +442,8 @@ nx_fw_cmd_create_tx_ctx(struct netxen_adapter *adapter)
                goto out_free_rq;
        }
 
-       memset(rq_addr, 0, rq_size);
        prq = rq_addr;
 
-       memset(rsp_addr, 0, rsp_size);
        prsp = rsp_addr;
 
        prq->host_rsp_dma_addr = cpu_to_le64(rsp_phys_addr);
@@ -755,7 +753,6 @@ int netxen_alloc_hw_resources(struct netxen_adapter *adapter)
                return -ENOMEM;
        }
 
-       memset(addr, 0, sizeof(struct netxen_ring_ctx));
        recv_ctx->hwctx = addr;
        recv_ctx->hwctx->ctx_id = cpu_to_le32(port);
        recv_ctx->hwctx->cmd_consumer_offset =

diff --git a/drivers/net/ethernet/ti/tlan.c b/drivers/net/ethernet/ti/tlan.c
index b4ab1a5..78f0f2d 100644 (file)
--- a/drivers/net/ethernet/ti/tlan.c
+++ b/drivers/net/ethernet/ti/tlan.c
@@ -855,7 +855,6 @@ static int tlan_init(struct net_device *dev)
                       dev->name);
                return -ENOMEM;
        }
-       memset(priv->dma_storage, 0, dma_size);
        priv->rx_list = (struct tlan_list *)
                ALIGN((unsigned long)priv->dma_storage, 8);
        priv->rx_list_dma = ALIGN(priv->dma_storage_dma, 8);