[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>
diff --git a/drivers/ata/pata_efar.c b/drivers/ata/pata_efar.c
index f37d987..b2e71e6 100644
--- a/drivers/ata/pata_efar.c
+++ b/drivers/ata/pata_efar.c
@@ -252,7 +252,7 @@
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,
};