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i40e/i40evf: Use dma_set_mask_and_coherent 

In Linux 3.13, dma_set_mask_and_coherent was introduced, and we have
been encouraged to use it. It simplifies the DMA mapping code a bit as
well.

Change-ID: I66e340245af7d0dedfa8b40fec1f5e352754432e
Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Signed-off-by: Catherine Sullivan  <catherine.sullivan@intel.com>
Tested-by: Kavindya Deegala <kavindya.s.deegala@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Mitch Williams 2014-02-11 08:26:33 +00:00 committed by Jeff Kirsher
parent 9347eb771e
commit 6494294f27
2 changed files with 12 additions and 21 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
drivers/net/ethernet/intel/i40e/i40e_main.c
View File

@ -7970,16 +7970,12 @@ static int i40e_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
return err;
/* set up for high or low dma */
if (!dma_set_mask(&pdev->dev, DMA_BIT_MASK(64))) {
/* coherent mask for the same size will always succeed if
* dma_set_mask does
*/
dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64));
} else if (!dma_set_mask(&pdev->dev, DMA_BIT_MASK(32))) {
dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32));
} else {
dev_err(&pdev->dev, "DMA configuration failed: %d\n", err);
err = -EIO;
err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
if (err)
err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
if (err) {
dev_err(&pdev->dev,
"DMA configuration failed: 0x%x\n", err);
goto err_dma;
}

17
drivers/net/ethernet/intel/i40evf/i40evf_main.c
View File

@ -2182,17 +2182,12 @@ static int i40evf_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
if (err)
return err;
if (!dma_set_mask(&pdev->dev, DMA_BIT_MASK(64))) {
/* coherent mask for the same size will always succeed if
* dma_set_mask does
*/
dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64));
} else if (!dma_set_mask(&pdev->dev, DMA_BIT_MASK(32))) {
dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32));
} else {
dev_err(&pdev->dev, "%s: DMA configuration failed: %d\n",
__func__, err);
err = -EIO;
err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
if (err)
err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
if (err) {
dev_err(&pdev->dev,
"DMA configuration failed: 0x%x\n", err);
goto err_dma;
}