[PATCH net-next 4/4] net: dpaa2: Use napi_alloc_frag_align() to avoid the memory waste

[Kevin Hao]

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: Kevin Hao <haoke...@gmail.com>
---
 drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c 
b/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c
index fb0bcd18ec0c..b7aaf4b4f3fb 100644
--- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c
+++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c
@@ -768,12 +768,11 @@ 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);
-- 
2.29.2