diff options
| author | Christophe JAILLET <christophe.jaillet@wanadoo.fr> | 2022-01-01 15:48:25 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2022-01-02 12:21:16 +0000 |
| commit | c95e078069bf9bfcb66272fac162c79be6c9170b (patch) | |
| tree | 90b88014f06c27e88651dc8be0982063baf7f8e9 /drivers | |
| parent | c5180ad0c2784924b3526ec2bd3ee9e0aa05724b (diff) | |
| download | linux-c95e078069bf9bfcb66272fac162c79be6c9170b.tar.bz2 | |
tehuti: Use dma_set_mask_and_coherent() and simplify code
Use dma_set_mask_and_coherent() instead of unrolling it with some
dma_set_mask()+dma_set_coherent_mask().
Moreover, as stated in [1], dma_set_mask_and_coherent() with a 64-bit mask
will never fail if dev->dma_mask is non-NULL.
So, if it fails, the 32 bits case will also fail for the same reason.
That said, 'pci_using_dac' can only be 1 after a successful
dma_set_mask_and_coherent().
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>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/ethernet/tehuti/tehuti.c | 28 |
1 files changed, 10 insertions, 18 deletions
diff --git a/drivers/net/ethernet/tehuti/tehuti.c b/drivers/net/ethernet/tehuti/tehuti.c index 89bc1602661c..985073eba3bd 100644 --- a/drivers/net/ethernet/tehuti/tehuti.c +++ b/drivers/net/ethernet/tehuti/tehuti.c @@ -1884,10 +1884,10 @@ bdx_probe(struct pci_dev *pdev, const struct pci_device_id *ent) { struct net_device *ndev; struct bdx_priv *priv; - int err, pci_using_dac, port; unsigned long pciaddr; u32 regionSize; struct pci_nic *nic; + int err, port; ENTER; @@ -1900,16 +1900,10 @@ bdx_probe(struct pci_dev *pdev, const struct pci_device_id *ent) if (err) /* it triggers interrupt, dunno why. */ goto err_pci; /* it's not a problem though */ - if (!(err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(64))) && - !(err = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64)))) { - pci_using_dac = 1; - } else { - if ((err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32))) || - (err = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32)))) { - pr_err("No usable DMA configuration, aborting\n"); - goto err_dma; - } - pci_using_dac = 0; + err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); + if (err) { + pr_err("No usable DMA configuration, aborting\n"); + goto err_dma; } err = pci_request_regions(pdev, BDX_DRV_NAME); @@ -1982,16 +1976,14 @@ bdx_probe(struct pci_dev *pdev, const struct pci_device_id *ent) /* these fields are used for info purposes only * so we can have them same for all ports of the board */ ndev->if_port = port; - ndev->features = NETIF_F_IP_CSUM | NETIF_F_SG | NETIF_F_TSO - | NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX | - NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_RXCSUM - ; + ndev->features = NETIF_F_IP_CSUM | NETIF_F_SG | NETIF_F_TSO | + NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX | + NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_RXCSUM | + NETIF_F_HIGHDMA; + ndev->hw_features = NETIF_F_IP_CSUM | NETIF_F_SG | NETIF_F_TSO | NETIF_F_HW_VLAN_CTAG_TX; - if (pci_using_dac) - ndev->features |= NETIF_F_HIGHDMA; - /************** priv ****************/ priv = nic->priv[port] = netdev_priv(ndev); |