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@xxxxxxxxxx> --- drivers/net/vmxnet3/vmxnet3_drv.c | 22 +++++++--------------- 1 file 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 @@ vmxnet3_change_mtu(struct net_device *netdev, int new_mtu) 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; -- 2.32.0
