diff options
| author | Christophe JAILLET <christophe.jaillet@wanadoo.fr> | 2022-01-08 15:22:13 +0100 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2022-01-10 01:52:18 +0100 |
| commit | 21ef11eaf3f78dda7fd20abe6e60e27038cb06a3 (patch) | |
| tree | f149b01a1c45985073b3f20e3be072a967146785 /drivers/net/ethernet/myricom | |
| parent | qlcnic: Simplify DMA setting (diff) | |
| download | linux-21ef11eaf3f78dda7fd20abe6e60e27038cb06a3.tar.xz linux-21ef11eaf3f78dda7fd20abe6e60e27038cb06a3.zip | |
myri10ge: Simplify DMA setting
As stated in [1], dma_set_mask() 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.
If dma_set_mask_and_coherent() succeeds, 'dac_enabled' is known to be 1.
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/e92b0c3a3c1574a97a4e6fd0c30225f10fa59d18.1641651693.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'drivers/net/ethernet/myricom')
| -rw-r--r-- | drivers/net/ethernet/myricom/myri10ge/myri10ge.c | 13 |
1 files changed, 1 insertions, 12 deletions
diff --git a/drivers/net/ethernet/myricom/myri10ge/myri10ge.c b/drivers/net/ethernet/myricom/myri10ge/myri10ge.c index 83a5e29c836a..50ac3ee2577a 100644 --- a/drivers/net/ethernet/myricom/myri10ge/myri10ge.c +++ b/drivers/net/ethernet/myricom/myri10ge/myri10ge.c @@ -3742,7 +3742,6 @@ static int myri10ge_probe(struct pci_dev *pdev, const struct pci_device_id *ent) struct myri10ge_priv *mgp; struct device *dev = &pdev->dev; int status = -ENXIO; - int dac_enabled; unsigned hdr_offset, ss_offset; static int board_number; @@ -3782,15 +3781,8 @@ static int myri10ge_probe(struct pci_dev *pdev, const struct pci_device_id *ent) myri10ge_mask_surprise_down(pdev); pci_set_master(pdev); - dac_enabled = 1; status = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); if (status != 0) { - dac_enabled = 0; - dev_err(&pdev->dev, - "64-bit pci address mask was refused, trying 32-bit\n"); - status = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32)); - } - if (status != 0) { dev_err(&pdev->dev, "Error %d setting DMA mask\n", status); goto abort_with_enabled; } @@ -3874,10 +3866,7 @@ static int myri10ge_probe(struct pci_dev *pdev, const struct pci_device_id *ent) /* fake NETIF_F_HW_VLAN_CTAG_RX for good GRO performance */ netdev->hw_features |= NETIF_F_HW_VLAN_CTAG_RX; - netdev->features = netdev->hw_features; - - if (dac_enabled) - netdev->features |= NETIF_F_HIGHDMA; + netdev->features = netdev->hw_features | NETIF_F_HIGHDMA; netdev->vlan_features |= mgp->features; if (mgp->fw_ver_tiny < 37) |