diff options
Diffstat (limited to 'drivers/ata/sata_qstor.c')
| -rw-r--r-- | drivers/ata/sata_qstor.c | 34 |
1 files changed, 7 insertions, 27 deletions
diff --git a/drivers/ata/sata_qstor.c b/drivers/ata/sata_qstor.c index 865e5c58bd94..c53c5a47204d 100644 --- a/drivers/ata/sata_qstor.c +++ b/drivers/ata/sata_qstor.c @@ -537,33 +537,13 @@ static void qs_host_init(struct ata_host *host, unsigned int chip_id) static int qs_set_dma_masks(struct pci_dev *pdev, void __iomem *mmio_base) { u32 bus_info = readl(mmio_base + QS_HID_HPHY); - int rc, have_64bit_bus = (bus_info & QS_HPHY_64BIT); - - if (have_64bit_bus && - !dma_set_mask(&pdev->dev, DMA_BIT_MASK(64))) { - rc = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64)); - if (rc) { - rc = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32)); - if (rc) { - dev_err(&pdev->dev, - "64-bit DMA enable failed\n"); - return rc; - } - } - } else { - rc = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32)); - if (rc) { - dev_err(&pdev->dev, "32-bit DMA enable failed\n"); - return rc; - } - rc = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32)); - if (rc) { - dev_err(&pdev->dev, - "32-bit consistent DMA enable failed\n"); - return rc; - } - } - return 0; + int dma_bits = (bus_info & QS_HPHY_64BIT) ? 64 : 32; + int rc; + + rc = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(dma_bits)); + if (rc) + dev_err(&pdev->dev, "%d-bit DMA enable failed\n", dma_bits); + return rc; } static int qs_ata_init_one(struct pci_dev *pdev, |