[libata] MWDMA0 is unsupported on PIIX-like PATA controllers

MWDMA0 timings cannot be met with the PIIX based controller
programming interface.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/ata/pata_efar.c b/drivers/ata/pata_efar.c
index f37d98700dfd..b2e71e6473ed 100644
--- a/drivers/ata/pata_efar.c
+++ b/drivers/ata/pata_efar.c
@@ -252,7 +252,7 @@ static int efar_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
         static const struct ata_port_info info = {
                 .flags          = ATA_FLAG_SLAVE_POSS,
                 .pio_mask       = ATA_PIO4,
-                .mwdma_mask     = ATA_MWDMA2,
+                .mwdma_mask     = ATA_MWDMA12_ONLY,
                 .udma_mask      = ATA_UDMA4,
                 .port_ops       = &efar_ops,
         };