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, 'netdev->features' will have NETIF_F_HIGHDMA in all cases. Move the assignment of this feature in be_netdev_init() instead be_probe() which is a much logical place. 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/ethernet/emulex/benet/be_main.c | 14 +++++--------- 1 file changed, 5 insertions(+), 9 deletions(-) diff --git a/drivers/net/ethernet/emulex/benet/be_main.c b/drivers/net/ethernet/emulex/benet/be_main.c index 84b3ba9bdb18..d0c262f2695a 100644 --- a/drivers/net/ethernet/emulex/benet/be_main.c +++ b/drivers/net/ethernet/emulex/benet/be_main.c @@ -5194,7 +5194,8 @@ static void be_netdev_init(struct net_device *netdev) netdev->hw_features |= NETIF_F_RXHASH; netdev->features |= netdev->hw_features | - NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_HW_VLAN_CTAG_FILTER; + NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_HW_VLAN_CTAG_FILTER | + NETIF_F_HIGHDMA; netdev->vlan_features |= NETIF_F_SG | NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM; @@ -5840,14 +5841,9 @@ static int be_probe(struct pci_dev *pdev, const struct pci_device_id *pdev_id) SET_NETDEV_DEV(netdev, &pdev->dev); status = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); - if (!status) { - netdev->features |= NETIF_F_HIGHDMA; - } else { - status = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)); - if (status) { - dev_err(&pdev->dev, "Could not set PCI DMA Mask\n"); - goto free_netdev; - } + if (status) { + dev_err(&pdev->dev, "Could not set PCI DMA Mask\n"); + goto free_netdev; } status = pci_enable_pcie_error_reporting(pdev); -- 2.32.0
