diff options
| -rw-r--r-- | drivers/ata/pata_cypress.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/ata/pata_cypress.c b/drivers/ata/pata_cypress.c index e1486fe298ae..5b3a7a8ebef6 100644 --- a/drivers/ata/pata_cypress.c +++ b/drivers/ata/pata_cypress.c @@ -41,6 +41,10 @@ enum { CY82_INDEX_TIMEOUT = 0x32 }; +static bool enable_dma = true; +module_param(enable_dma, bool, 0); +MODULE_PARM_DESC(enable_dma, "Enable bus master DMA operations"); + /** * cy82c693_set_piomode - set initial PIO mode data * @ap: ATA interface @@ -124,14 +128,16 @@ static struct ata_port_operations cy82c693_port_ops = { static int cy82c693_init_one(struct pci_dev *pdev, const struct pci_device_id *id) { - static const struct ata_port_info info = { + static struct ata_port_info info = { .flags = ATA_FLAG_SLAVE_POSS, .pio_mask = ATA_PIO4, - .mwdma_mask = ATA_MWDMA2, .port_ops = &cy82c693_port_ops }; const struct ata_port_info *ppi[] = { &info, &ata_dummy_port_info }; + if (enable_dma) + info.mwdma_mask = ATA_MWDMA2; + /* Devfn 1 is the ATA primary. The secondary is magic and on devfn2. For the moment we don't handle the secondary. FIXME */ |