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ata_piix: SITRE handling fix 

Set SITRE (separate slave timing register) bit also in master-only
configurations to match other PIIX-alike drivers and make further
changes easier.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
This commit is contained in:
Bartlomiej Zolnierkiewicz 2011-10-13 15:28:30 +02:00 committed by Jeff Garzik
parent 418fae2751
commit ce986690d9
1 changed files with 3 additions and 2 deletions
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5
drivers/ata/ata_piix.c
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@ -786,8 +786,6 @@ static void piix_set_piomode(struct ata_port *ap, struct ata_device *adev)
if (is_slave) {
/* clear TIME1|IE1|PPE1|DTE1 */
master_data &= 0xff0f;
/* Enable SITRE (separate slave timing register) */
master_data |= 0x4000;
/* enable PPE1, IE1 and TIME1 as needed */
master_data |= (control << 4);
pci_read_config_byte(dev, slave_port, &slave_data);
@ -805,6 +803,9 @@ static void piix_set_piomode(struct ata_port *ap, struct ata_device *adev)
(timings[pio][0] << 12) |
(timings[pio][1] << 8);
}
/* Enable SITRE (separate slave timing register) */
master_data |= 0x4000;
pci_write_config_word(dev, master_port, master_data);
if (is_slave)
pci_write_config_byte(dev, slave_port, slave_data);