diff options
| author | Iyappan Subramanian <isubramanian@apm.com> | 2016-08-12 22:05:38 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-08-13 11:48:51 -0700 |
| commit | 6e434627bce2a4ccf6d7eea50c08b4fdbb70dd3e (patch) | |
| tree | 92331af89598f26e0b83edb3c38cced178e7d092 /drivers/net/ethernet/apm/xgene | |
| parent | ee0f95440dc16dd0db9c2856bed1e7806d1839de (diff) | |
| download | linux-stable-6e434627bce2a4ccf6d7eea50c08b4fdbb70dd3e.tar.gz | |
drivers: net: xgene: fix: Add dma_unmap_single
In addition to xgene_enet_delete_bufpool() freeing skbs, their associated
dma memory should also be unmapped.
Signed-off-by: Iyappan Subramanian <isubramanian@apm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/apm/xgene')
| -rw-r--r-- | drivers/net/ethernet/apm/xgene/xgene_enet_main.c | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/drivers/net/ethernet/apm/xgene/xgene_enet_main.c b/drivers/net/ethernet/apm/xgene/xgene_enet_main.c index ceeb3f41848d..c1fd33d23306 100644 --- a/drivers/net/ethernet/apm/xgene/xgene_enet_main.c +++ b/drivers/net/ethernet/apm/xgene/xgene_enet_main.c @@ -72,7 +72,6 @@ static int xgene_enet_refill_bufpool(struct xgene_enet_desc_ring *buf_pool, skb = netdev_alloc_skb_ip_align(ndev, len); if (unlikely(!skb)) return -ENOMEM; - buf_pool->rx_skb[tail] = skb; dma_addr = dma_map_single(dev, skb->data, len, DMA_FROM_DEVICE); if (dma_mapping_error(dev, dma_addr)) { @@ -81,6 +80,8 @@ static int xgene_enet_refill_bufpool(struct xgene_enet_desc_ring *buf_pool, return -EINVAL; } + buf_pool->rx_skb[tail] = skb; + raw_desc->m1 = cpu_to_le64(SET_VAL(DATAADDR, dma_addr) | SET_VAL(BUFDATALEN, bufdatalen) | SET_BIT(COHERENT)); @@ -102,12 +103,21 @@ static u8 xgene_enet_hdr_len(const void *data) static void xgene_enet_delete_bufpool(struct xgene_enet_desc_ring *buf_pool) { + struct device *dev = ndev_to_dev(buf_pool->ndev); + struct xgene_enet_raw_desc16 *raw_desc; + dma_addr_t dma_addr; int i; /* Free up the buffers held by hardware */ for (i = 0; i < buf_pool->slots; i++) { - if (buf_pool->rx_skb[i]) + if (buf_pool->rx_skb[i]) { dev_kfree_skb_any(buf_pool->rx_skb[i]); + + raw_desc = &buf_pool->raw_desc16[i]; + dma_addr = GET_VAL(DATAADDR, le64_to_cpu(raw_desc->m1)); + dma_unmap_single(dev, dma_addr, XGENE_ENET_MAX_MTU, + DMA_FROM_DEVICE); + } } } |