Commit d0dfbb99 authored by Kevin Hao's avatar Kevin Hao Committed by Jakub Kicinski
Browse files

net: dpaa2: Use napi_alloc_frag_align() to avoid the memory waste 



The napi_alloc_frag_align() will guarantee that a correctly align
buffer address is returned. So use this function to simplify the buffer
alloc and avoid the unnecessary memory waste.

Signed-off-by: default avatarKevin Hao <haokexin@gmail.com>
Reviewed-by: default avatarIoana Ciornei <ioana.ciornei@nxp.com>
Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
parent 1b041601

drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c

+1 −2
Original line number Diff line number Diff line
@@ -764,12 +764,11 @@ static int dpaa2_eth_build_sg_fd(struct dpaa2_eth_priv *priv, 
	/* Prepare the HW SGT structure */

	sgt_buf_size = priv->tx_data_offset +

		       sizeof(struct dpaa2_sg_entry) *  num_dma_bufs;

	sgt_buf = napi_alloc_frag(sgt_buf_size + DPAA2_ETH_TX_BUF_ALIGN);

	sgt_buf = napi_alloc_frag_align(sgt_buf_size, DPAA2_ETH_TX_BUF_ALIGN);

	if (unlikely(!sgt_buf)) {

		err = -ENOMEM;

		goto sgt_buf_alloc_failed;

	}

	sgt_buf = PTR_ALIGN(sgt_buf, DPAA2_ETH_TX_BUF_ALIGN);

	memset(sgt_buf, 0, sgt_buf_size);



	sgt = (struct dpaa2_sg_entry *)(sgt_buf + priv->tx_data_offset);