From aa006d1ad0a58f5dad0065b25263a73365319996 Mon Sep 17 00:00:00 2001 From: Himanshu Jha Date: Sat, 30 Dec 2017 21:14:57 +0530 Subject: [PATCH] ethernet/broadcom: Use zeroing memory allocator than allocator/memset Use dma_zalloc_coherent for allocating zeroed memory and remove unnecessary memset function. Done using Coccinelle. Generated-by: scripts/coccinelle/api/alloc/kzalloc-simple.cocci 0-day tested with no failures. Suggested-by: Luis R. Rodriguez Signed-off-by: Himanshu Jha Signed-off-by: David S. Miller --- drivers/net/ethernet/broadcom/bcm63xx_enet.c | 6 ++---- drivers/net/ethernet/broadcom/bnxt/bnxt_dcb.c | 5 ++--- 2 files changed, 4 insertions(+), 7 deletions(-) diff --git a/drivers/net/ethernet/broadcom/bcm63xx_enet.c b/drivers/net/ethernet/broadcom/bcm63xx_enet.c index 1fbbbabe7588..14a59e51db67 100644 --- a/drivers/net/ethernet/broadcom/bcm63xx_enet.c +++ b/drivers/net/ethernet/broadcom/bcm63xx_enet.c @@ -2128,27 +2128,25 @@ static int bcm_enetsw_open(struct net_device *dev) /* allocate rx dma ring */ size = priv->rx_ring_size * sizeof(struct bcm_enet_desc); - p = dma_alloc_coherent(kdev, size, &priv->rx_desc_dma, GFP_KERNEL); + p = dma_zalloc_coherent(kdev, size, &priv->rx_desc_dma, GFP_KERNEL); if (!p) { dev_err(kdev, "cannot allocate rx ring %u\n", size); ret = -ENOMEM; goto out_freeirq_tx; } - memset(p, 0, size); priv->rx_desc_alloc_size = size; priv->rx_desc_cpu = p; /* allocate tx dma ring */ size = priv->tx_ring_size * sizeof(struct bcm_enet_desc); - p = dma_alloc_coherent(kdev, size, &priv->tx_desc_dma, GFP_KERNEL); + p = dma_zalloc_coherent(kdev, size, &priv->tx_desc_dma, GFP_KERNEL); if (!p) { dev_err(kdev, "cannot allocate tx ring\n"); ret = -ENOMEM; goto out_free_rx_ring; } - memset(p, 0, size); priv->tx_desc_alloc_size = size; priv->tx_desc_cpu = p; diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_dcb.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_dcb.c index fed37cd9ae1d..3c746f2d9ed8 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt_dcb.c +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_dcb.c @@ -278,12 +278,11 @@ static int bnxt_hwrm_set_dcbx_app(struct bnxt *bp, struct dcb_app *app, n = IEEE_8021QAZ_MAX_TCS; data_len = sizeof(*data) + sizeof(*fw_app) * n; - data = dma_alloc_coherent(&bp->pdev->dev, data_len, &mapping, - GFP_KERNEL); + data = dma_zalloc_coherent(&bp->pdev->dev, data_len, &mapping, + GFP_KERNEL); if (!data) return -ENOMEM; - memset(data, 0, data_len); bnxt_hwrm_cmd_hdr_init(bp, &get, HWRM_FW_GET_STRUCTURED_DATA, -1, -1); get.dest_data_addr = cpu_to_le64(mapping); get.structure_id = cpu_to_le16(STRUCT_HDR_STRUCT_ID_DCBX_APP); -- 2.30.2