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authorBartlomiej Zolnierkiewicz <bzolnier@gmail.com>2009-12-03 20:32:08 +0100
committerJeff Garzik <jgarzik@redhat.com>2009-12-03 15:50:51 -0500
commitdd221f9ce97c33e560a63999c74c17d13ef780b4 (patch)
treee0a0c2cb99b53047cac73bec9f1c0af879da04a1 /drivers/ata/pata_efar.c
parentf79ff92649efd5ef17f5267fe6f599c64e74e050 (diff)
pata_efar: fix wrong MWDMA timings being programmed
Do not clear MWDMA timings for device on the other port when programming slave device. This change should be safe as this is how we have been doing things in IDE slc90e66 host driver for years. Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Diffstat (limited to 'drivers/ata/pata_efar.c')
-rw-r--r--drivers/ata/pata_efar.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/ata/pata_efar.c b/drivers/ata/pata_efar.c
index 540c3642630..f37d98700df 100644
--- a/drivers/ata/pata_efar.c
+++ b/drivers/ata/pata_efar.c
@@ -201,7 +201,7 @@ static void efar_set_dmamode (struct ata_port *ap, struct ata_device *adev)
master_data &= 0xFF4F; /* Mask out IORDY|TIME1|DMAONLY */
master_data |= control << 4;
pci_read_config_byte(dev, 0x44, &slave_data);
- slave_data &= (0x0F + 0xE1 * ap->port_no);
+ slave_data &= ap->port_no ? 0x0F : 0xF0;
/* Load the matching timing */
slave_data |= ((timings[pio][0] << 2) | timings[pio][1]) << (ap->port_no ? 4 : 0);
pci_write_config_byte(dev, 0x44, slave_data);