[PATCH net-next] wan/fsl_ucc_hdlc: use dma_zalloc_coherent instead of allocator/memset
From: YueHaibing <hidden>
Date: 2018-06-04 13:08:44
Use dma_zalloc_coherent instead of dma_alloc_coherent followed by memset 0. Signed-off-by: YueHaibing <redacted> --- drivers/net/wan/fsl_ucc_hdlc.c | 11 ++++------- 1 file changed, 4 insertions(+), 7 deletions(-)
diff --git a/drivers/net/wan/fsl_ucc_hdlc.c b/drivers/net/wan/fsl_ucc_hdlc.c
index 33df764..4205dfd 100644
--- a/drivers/net/wan/fsl_ucc_hdlc.c
+++ b/drivers/net/wan/fsl_ucc_hdlc.c@@ -270,10 +270,10 @@ static int uhdlc_init(struct ucc_hdlc_private *priv) iowrite16be(DEFAULT_HDLC_ADDR, &priv->ucc_pram->haddr4); /* Get BD buffer */ - bd_buffer = dma_alloc_coherent(priv->dev, - (RX_BD_RING_LEN + TX_BD_RING_LEN) * - MAX_RX_BUF_LENGTH, - &bd_dma_addr, GFP_KERNEL); + bd_buffer = dma_zalloc_coherent(priv->dev, + (RX_BD_RING_LEN + TX_BD_RING_LEN) * + MAX_RX_BUF_LENGTH, + &bd_dma_addr, GFP_KERNEL); if (!bd_buffer) { dev_err(priv->dev, "Could not allocate buffer descriptors\n");
@@ -281,9 +281,6 @@ static int uhdlc_init(struct ucc_hdlc_private *priv) goto free_tiptr; } - memset(bd_buffer, 0, (RX_BD_RING_LEN + TX_BD_RING_LEN) - * MAX_RX_BUF_LENGTH); - priv->rx_buffer = bd_buffer; priv->tx_buffer = bd_buffer + RX_BD_RING_LEN * MAX_RX_BUF_LENGTH;
--
2.7.0