diff options
Diffstat (limited to 'drivers/ata/pata_cypress.c')
| -rw-r--r-- | drivers/ata/pata_cypress.c | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/drivers/ata/pata_cypress.c b/drivers/ata/pata_cypress.c index 793018460d82..ae347b5c2871 100644 --- a/drivers/ata/pata_cypress.c +++ b/drivers/ata/pata_cypress.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * pata_cypress.c - Cypress PATA for new ATA layer * (C) 2006 Red Hat Inc @@ -40,6 +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 @@ -57,7 +62,7 @@ static void cy82c693_set_piomode(struct ata_port *ap, struct ata_device *adev) u32 addr; if (ata_timing_compute(adev, adev->pio_mode, &t, T, 1) < 0) { - printk(KERN_ERR DRV_NAME ": mome computation failed.\n"); + ata_dev_err(adev, DRV_NAME ": mome computation failed.\n"); return; } @@ -110,7 +115,7 @@ static void cy82c693_set_dmamode(struct ata_port *ap, struct ata_device *adev) outb(0x50, 0x23); } -static struct scsi_host_template cy82c693_sht = { +static const struct scsi_host_template cy82c693_sht = { ATA_BMDMA_SHT(DRV_NAME), }; @@ -123,14 +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 */ |