diff --git a/drivers/net/ethernet/ibm/ibmvnic.c b/drivers/net/ethernet/ibm/ibmvnic.c index 221d65286329..e8c72abfd7ac 100644 --- a/drivers/net/ethernet/ibm/ibmvnic.c +++ b/drivers/net/ethernet/ibm/ibmvnic.c @@ -502,50 +502,6 @@ static int init_tx_pools(struct net_device *netdev) return 0; } -static void release_bounce_buffer(struct ibmvnic_adapter *adapter) -{ - struct device *dev = &adapter->vdev->dev; - - if (!adapter->bounce_buffer) - return; - - if (!dma_mapping_error(dev, adapter->bounce_buffer_dma)) { - dma_unmap_single(dev, adapter->bounce_buffer_dma, - adapter->bounce_buffer_size, - DMA_BIDIRECTIONAL); - adapter->bounce_buffer_dma = DMA_ERROR_CODE; - } - - kfree(adapter->bounce_buffer); - adapter->bounce_buffer = NULL; -} - -static int init_bounce_buffer(struct net_device *netdev) -{ - struct ibmvnic_adapter *adapter = netdev_priv(netdev); - struct device *dev = &adapter->vdev->dev; - char *buf; - int buf_sz; - dma_addr_t map_addr; - - buf_sz = (netdev->mtu + ETH_HLEN - 1) / PAGE_SIZE + 1; - buf = kmalloc(adapter->bounce_buffer_size, GFP_KERNEL); - if (!buf) - return -1; - - map_addr = dma_map_single(dev, buf, buf_sz, DMA_TO_DEVICE); - if (dma_mapping_error(dev, map_addr)) { - dev_err(dev, "Couldn't map bounce buffer\n"); - kfree(buf); - return -1; - } - - adapter->bounce_buffer = buf; - adapter->bounce_buffer_size = buf_sz; - adapter->bounce_buffer_dma = map_addr; - return 0; -} - static void release_error_buffers(struct ibmvnic_adapter *adapter) { struct device *dev = &adapter->vdev->dev; @@ -597,7 +553,6 @@ static int ibmvnic_login(struct net_device *netdev) static void release_resources(struct ibmvnic_adapter *adapter) { - release_bounce_buffer(adapter); release_tx_pools(adapter); release_rx_pools(adapter); @@ -656,10 +611,6 @@ static int ibmvnic_open(struct net_device *netdev) if (rc) goto ibmvnic_open_fail; - rc = init_bounce_buffer(netdev); - if (rc) - goto ibmvnic_open_fail; - replenish_pools(adapter); /* We're ready to receive frames, enable the sub-crq interrupts and @@ -880,7 +831,6 @@ static int ibmvnic_xmit(struct sk_buff *skb, struct net_device *netdev) unsigned int tx_bytes = 0; dma_addr_t data_dma_addr; struct netdev_queue *txq; - bool used_bounce = false; unsigned long lpar_rc; union sub_crq tx_crq; unsigned int offset; @@ -921,7 +871,6 @@ static int ibmvnic_xmit(struct sk_buff *skb, struct net_device *netdev) tx_buff->index = index; tx_buff->pool_index = queue_num; tx_buff->last_frag = true; - tx_buff->used_bounce = used_bounce; memset(&tx_crq, 0, sizeof(tx_crq)); tx_crq.v1.first = IBMVNIC_CRQ_CMD; @@ -1517,7 +1466,6 @@ static int ibmvnic_complete_tx(struct ibmvnic_adapter *adapter, continue; txbuff->data_dma[j] = 0; - txbuff->used_bounce = false; } /* if sub_crq was sent indirectly */ first = txbuff->indir_arr[0].generic.first; @@ -3343,7 +3291,6 @@ static unsigned long ibmvnic_get_desired_dma(struct vio_dev *vdev) adapter = netdev_priv(netdev); ret += PAGE_SIZE; /* the crq message queue */ - ret += adapter->bounce_buffer_size; ret += IOMMU_PAGE_ALIGN(sizeof(struct ibmvnic_statistics), tbl); for (i = 0; i < adapter->req_tx_queues + adapter->req_rx_queues; i++) diff --git a/drivers/net/ethernet/ibm/ibmvnic.h b/drivers/net/ethernet/ibm/ibmvnic.h index 8fbe05d2710a..355225cf6d30 100644 --- a/drivers/net/ethernet/ibm/ibmvnic.h +++ b/drivers/net/ethernet/ibm/ibmvnic.h @@ -868,7 +868,6 @@ struct ibmvnic_tx_buff { int index; int pool_index; bool last_frag; - bool used_bounce; union sub_crq indir_arr[6]; u8 hdr_data[140]; dma_addr_t indir_dma; @@ -924,9 +923,6 @@ struct ibmvnic_adapter { dma_addr_t ip_offload_ctrl_tok; bool migrated; u32 msg_enable; - void *bounce_buffer; - int bounce_buffer_size; - dma_addr_t bounce_buffer_dma; /* Statistics */ struct ibmvnic_statistics stats;