diff options
| author |   Christophe JAILLET <christophe.jaillet@wanadoo.fr> | 2022-01-09 09:50:22 +0100 |
|---|---|---|
| committer |   Jakub Kicinski <kuba@kernel.org> | 2022-01-09 16:52:19 -0800 |
| commit | c38f30683956722b2de31f026e73c8622a2fade3 (patch) | |
| tree | 5d3e4759677dc00eeb52397e7ae4a6c2e77a1b9e /drivers/net | |
| parent | bna: Simplify DMA setting (diff) | |
| download | linux-dev-c38f30683956722b2de31f026e73c8622a2fade3.tar.xz linux-dev-c38f30683956722b2de31f026e73c8622a2fade3.zip | |
vmxnet3: Remove useless DMA-32 fallback configuration
As stated in [1], dma_set_mask() with a 64-bit mask never fails if
dev->dma_mask is non-NULL.
So, if it fails, the 32 bits case will also fail for the same reason.
So if dma_set_mask_and_coherent() succeeds, 'dma64' is know to be 'true'.
Simplify code and remove some dead code accordingly.
[1]: https://lkml.org/lkml/2021/6/7/398
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://lore.kernel.org/r/43e5dcf1a5e9e9c5d2d86f87810d6e93e3d22e32.1641718188.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/vmxnet3/vmxnet3_drv.c | 22 |
1 files changed, 7 insertions, 15 deletions
diff --git a/drivers/net/vmxnet3/vmxnet3_drv.c b/drivers/net/vmxnet3/vmxnet3_drv.c index fd407c0e2856..d9d90baac72a 100644 --- a/drivers/net/vmxnet3/vmxnet3_drv.c +++ b/drivers/net/vmxnet3/vmxnet3_drv.c @@ -3159,14 +3159,14 @@ out: static void -vmxnet3_declare_features(struct vmxnet3_adapter *adapter, bool dma64) +vmxnet3_declare_features(struct vmxnet3_adapter *adapter) { struct net_device *netdev = adapter->netdev; netdev->hw_features = NETIF_F_SG | NETIF_F_RXCSUM | NETIF_F_HW_CSUM | NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_TSO | NETIF_F_TSO6 | - NETIF_F_LRO; + NETIF_F_LRO | NETIF_F_HIGHDMA; if (VMXNET3_VERSION_GE_4(adapter)) { netdev->hw_features |= NETIF_F_GSO_UDP_TUNNEL | @@ -3179,8 +3179,6 @@ vmxnet3_declare_features(struct vmxnet3_adapter *adapter, bool dma64) NETIF_F_GSO_UDP_TUNNEL_CSUM; } - if (dma64) - netdev->hw_features |= NETIF_F_HIGHDMA; netdev->vlan_features = netdev->hw_features & ~(NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX); @@ -3397,7 +3395,6 @@ vmxnet3_probe_device(struct pci_dev *pdev, #endif }; int err; - bool dma64; u32 ver; struct net_device *netdev; struct vmxnet3_adapter *adapter; @@ -3439,15 +3436,10 @@ vmxnet3_probe_device(struct pci_dev *pdev, adapter->rx_ring_size = VMXNET3_DEF_RX_RING_SIZE; adapter->rx_ring2_size = VMXNET3_DEF_RX_RING2_SIZE; - if (dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)) == 0) { - dma64 = true; - } else { - err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32)); - if (err) { - dev_err(&pdev->dev, "dma_set_mask failed\n"); - goto err_set_mask; - } - dma64 = false; + err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); + if (err) { + dev_err(&pdev->dev, "dma_set_mask failed\n"); + goto err_set_mask; } spin_lock_init(&adapter->cmd_lock); @@ -3614,7 +3606,7 @@ vmxnet3_probe_device(struct pci_dev *pdev, } SET_NETDEV_DEV(netdev, &pdev->dev); - vmxnet3_declare_features(adapter, dma64); + vmxnet3_declare_features(adapter); adapter->rxdata_desc_size = VMXNET3_VERSION_GE_3(adapter) ? VMXNET3_DEF_RXDATA_DESC_SIZE : 0; |