Replacing kmalloc/kfree/dma_map_single/dma_unmap_single()
with dma_alloc_coherent/dma_free_coherent() helps to reduce
code size, and simplify the code, and coherent DMA will not
clear the cache every time.
Signed-off-by: Cai Huoqing <[email protected]>
---
drivers/net/ethernet/ibm/Kconfig | 4 ++--
drivers/net/ethernet/ibm/ibmveth.c | 25 +++++++++----------------
2 files changed, 11 insertions(+), 18 deletions(-)
diff --git a/drivers/net/ethernet/ibm/Kconfig b/drivers/net/ethernet/ibm/Kconfig
index c0c112d95b89..926c0642784d 100644
--- a/drivers/net/ethernet/ibm/Kconfig
+++ b/drivers/net/ethernet/ibm/Kconfig
@@ -19,7 +19,7 @@ if NET_VENDOR_IBM
config IBMVETH
tristate "IBM LAN Virtual Ethernet support"
- depends on PPC_PSERIES
+ depends on PPC_PSERIES || COMPILE_TEST
help
This driver supports virtual ethernet adapters on newer IBM iSeries
and pSeries systems.
@@ -40,7 +40,7 @@ config EHEA
config IBMVNIC
tristate "IBM Virtual NIC support"
- depends on PPC_PSERIES
+ depends on PPC_PSERIES || COMPILE_TEST
help
This driver supports Virtual NIC adapters on IBM i and IBM System p
systems.
diff --git a/drivers/net/ethernet/ibm/ibmveth.c b/drivers/net/ethernet/ibm/ibmveth.c
index 3d9b4f99d357..3aedb680adb8 100644
--- a/drivers/net/ethernet/ibm/ibmveth.c
+++ b/drivers/net/ethernet/ibm/ibmveth.c
@@ -605,17 +605,13 @@ static int ibmveth_open(struct net_device *netdev)
}
rc = -ENOMEM;
- adapter->bounce_buffer =
- kmalloc(netdev->mtu + IBMVETH_BUFF_OH, GFP_KERNEL);
- if (!adapter->bounce_buffer)
- goto out_free_irq;
- adapter->bounce_buffer_dma =
- dma_map_single(&adapter->vdev->dev, adapter->bounce_buffer,
- netdev->mtu + IBMVETH_BUFF_OH, DMA_BIDIRECTIONAL);
- if (dma_mapping_error(dev, adapter->bounce_buffer_dma)) {
- netdev_err(netdev, "unable to map bounce buffer\n");
- goto out_free_bounce_buffer;
+ adapter->bounce_buffer = dma_alloc_coherent(&adapter->vdev->dev,
+ netdev->mtu + IBMVETH_BUFF_OH,
+ &adapter->bounce_buffer_dma, GFP_KERNEL);
+ if (!adapter->bounce_buffer) {
+ netdev_err(netdev, "unable to alloc bounce buffer\n");
+ goto out_free_irq;
}
netdev_dbg(netdev, "initial replenish cycle\n");
@@ -627,8 +623,6 @@ static int ibmveth_open(struct net_device *netdev)
return 0;
-out_free_bounce_buffer:
- kfree(adapter->bounce_buffer);
out_free_irq:
free_irq(netdev->irq, netdev);
out_free_buffer_pools:
@@ -702,10 +696,9 @@ static int ibmveth_close(struct net_device *netdev)
ibmveth_free_buffer_pool(adapter,
&adapter->rx_buff_pool[i]);
- dma_unmap_single(&adapter->vdev->dev, adapter->bounce_buffer_dma,
- adapter->netdev->mtu + IBMVETH_BUFF_OH,
- DMA_BIDIRECTIONAL);
- kfree(adapter->bounce_buffer);
+ dma_free_coherent(&adapter->vdev->dev,
+ adapter->netdev->mtu + IBMVETH_BUFF_OH,
+ adapter->bounce_buffer, adapter->bounce_buffer_dma);
netdev_dbg(netdev, "close complete\n");
--
2.25.1