wan/fsl_ucc_hdlc: use dma_zalloc_coherent instead of allocator/memset (1f55c286) · Commits · 戴 / test

drivers/net/wan/fsl_ucc_hdlc.c

+4 −7

Original line number	Diff line number	Diff line
		@@ -270,7 +270,7 @@ 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,
		bd_buffer = dma_zalloc_coherent(priv->dev,
		(RX_BD_RING_LEN + TX_BD_RING_LEN) *
		MAX_RX_BUF_LENGTH,
		&bd_dma_addr, GFP_KERNEL);
		@@ -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;