diff options
| -rw-r--r-- | drivers/ata/pata_serverworks.c | 11 |
1 files changed, 5 insertions, 6 deletions
diff --git a/drivers/ata/pata_serverworks.c b/drivers/ata/pata_serverworks.c index df68806df4b..8bed8887372 100644 --- a/drivers/ata/pata_serverworks.c +++ b/drivers/ata/pata_serverworks.c @@ -274,28 +274,27 @@ static void serverworks_set_dmamode(struct ata_port *ap, struct ata_device *adev { static const u8 dma_mode[] = { 0x77, 0x21, 0x20 }; int offset = 1 + 2 * ap->port_no - adev->devno; - int devbits = (2 * ap->port_no + adev->devno); + int devbits = 2 * ap->port_no + adev->devno; u8 ultra; u8 ultra_cfg; struct pci_dev *pdev = to_pci_dev(ap->host->dev); pci_read_config_byte(pdev, 0x54, &ultra_cfg); + pci_read_config_byte(pdev, 0x56 + ap->port_no, &ultra); + ultra &= ~(0x0F << (adev->devno * 4)); if (adev->dma_mode >= XFER_UDMA_0) { pci_write_config_byte(pdev, 0x44 + offset, 0x20); - pci_read_config_byte(pdev, 0x56 + ap->port_no, &ultra); - ultra &= ~(0x0F << (ap->port_no * 4)); ultra |= (adev->dma_mode - XFER_UDMA_0) - << (ap->port_no * 4); - pci_write_config_byte(pdev, 0x56 + ap->port_no, ultra); - + << (adev->devno * 4); ultra_cfg |= (1 << devbits); } else { pci_write_config_byte(pdev, 0x44 + offset, dma_mode[adev->dma_mode - XFER_MW_DMA_0]); ultra_cfg &= ~(1 << devbits); } + pci_write_config_byte(pdev, 0x56 + ap->port_no, ultra); pci_write_config_byte(pdev, 0x54, ultra_cfg); } |