diff options
| author | Ruizhe Zhou <zhouruizhe@resnics.com> | 2026-09-03 16:43:34 +0800 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2026-09-08 16:46:27 -0700 |
| commit | 7b85fba09ebe33fa9a5441f4ffcde388b5beff71 (patch) | |
| tree | ae85591f60d476e926f231de12562274e1a2552e | |
| parent | ee95313d1aef5730765199fe256f3518a6dc50cb (diff) | |
| download | linux-next-7b85fba09ebe33fa9a5441f4ffcde388b5beff71.tar.gz linux-next-7b85fba09ebe33fa9a5441f4ffcde388b5beff71.zip | |
net/mlx5: Remove obsolete 32-bit DMA mask fallback
The DMA API guarantees support for masks of 32 bits or wider and
explicitly identifies retrying a 32-bit mask after a 64-bit request as
incorrect:
https://docs.kernel.org/core-api/dma-api-howto.html#dma-addressing-capabilities
Remove the obsolete fallback while retaining the error check so that a
genuine DMA setup failure is still reported and aborts initialization.
Signed-off-by: Ruizhe Zhou <zhouruizhe@resnics.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Link: https://patch.msgid.link/20260903084339.870562-10-zhouruizhe@resnics.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlx5/core/main.c | 8 |
1 files changed, 2 insertions, 6 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/main.c b/drivers/net/ethernet/mellanox/mlx5/core/main.c index 5f28d906c35b..3a3b0ec4aad1 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/main.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/main.c @@ -184,12 +184,8 @@ static int set_dma_caps(struct pci_dev *pdev) err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); if (err) { - dev_warn(&pdev->dev, "Warning: couldn't set 64-bit PCI DMA mask\n"); - err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)); - if (err) { - dev_err(&pdev->dev, "Can't set PCI DMA mask, aborting\n"); - return err; - } + dev_err(&pdev->dev, "Can't set PCI DMA mask, aborting\n"); + return err; } dma_set_max_seg_size(&pdev->dev, 2u * 1024 * 1024 * 1024); |