diff options
| author |   Thomas Falcon <tlfalcon@linux.vnet.ibm.com> | 2018-04-06 18:37:02 -0500 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2018-04-08 12:39:47 -0400 |
| commit | 37e40fa8f62ba33021cb0050e38f87d7519ee447 (patch) | |
| tree | a2c7ca16975426bf96d6033a55bfb73045dfd9b2 /drivers | |
| parent | tipc: use the right skb in tipc_sk_fill_sock_diag() (diff) | |
| download | wireguard-linux-37e40fa8f62ba33021cb0050e38f87d7519ee447.tar.xz wireguard-linux-37e40fa8f62ba33021cb0050e38f87d7519ee447.zip | |
ibmvnic: Fix DMA mapping mistakes
Fix some mistakes caught by the DMA debugger. The first change
fixes a unnecessary unmap that should have been removed in an
earlier update. The next hunk fixes another bad unmap by zeroing
the bit checked to determine that an unmap is needed. The final
change fixes some buffers that are unmapped with the wrong
direction specified.
Signed-off-by: Thomas Falcon <tlfalcon@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/ethernet/ibm/ibmvnic.c | 14 |
1 files changed, 6 insertions, 8 deletions
diff --git a/drivers/net/ethernet/ibm/ibmvnic.c b/drivers/net/ethernet/ibm/ibmvnic.c index b492af6affc3..58e01432c2aa 100644 --- a/drivers/net/ethernet/ibm/ibmvnic.c +++ b/drivers/net/ethernet/ibm/ibmvnic.c @@ -320,9 +320,6 @@ failure: dev_info(dev, "replenish pools failure\n"); pool->free_map[pool->next_free] = index; pool->rx_buff[index].skb = NULL; - if (!dma_mapping_error(dev, dma_addr)) - dma_unmap_single(dev, dma_addr, pool->buff_size, - DMA_FROM_DEVICE); dev_kfree_skb_any(skb); adapter->replenish_add_buff_failure++; @@ -2574,7 +2571,7 @@ static int ibmvnic_complete_tx(struct ibmvnic_adapter *adapter, union sub_crq *next; int index; int i, j; - u8 first; + u8 *first; restart_loop: while (pending_scrq(adapter, scrq)) { @@ -2605,11 +2602,12 @@ restart_loop: txbuff->data_dma[j] = 0; } /* if sub_crq was sent indirectly */ - first = txbuff->indir_arr[0].generic.first; - if (first == IBMVNIC_CRQ_CMD) { + first = &txbuff->indir_arr[0].generic.first; + if (*first == IBMVNIC_CRQ_CMD) { dma_unmap_single(dev, txbuff->indir_dma, sizeof(txbuff->indir_arr), DMA_TO_DEVICE); + *first = 0; } if (txbuff->last_frag) { @@ -3882,9 +3880,9 @@ static int handle_login_rsp(union ibmvnic_crq *login_rsp_crq, int i; dma_unmap_single(dev, adapter->login_buf_token, adapter->login_buf_sz, - DMA_BIDIRECTIONAL); + DMA_TO_DEVICE); dma_unmap_single(dev, adapter->login_rsp_buf_token, - adapter->login_rsp_buf_sz, DMA_BIDIRECTIONAL); + adapter->login_rsp_buf_sz, DMA_FROM_DEVICE); /* If the number of queues requested can't be allocated by the * server, the login response will return with code 1. We will need |