diff options
| author | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2009-12-03 22:32:08 +0300 |
|---|---|---|
| committer | Jeff Garzik <jgarzik@redhat.com> | 2009-12-03 23:50:31 +0300 |
| commit | f79ff92649efd5ef17f5267fe6f599c64e74e050 (patch) | |
| tree | 73d35de776b41080547298df54782b8474f42d60 /drivers | |
| parent | 6938594374ee506e91a4c03117a034ea0ed66783 (diff) | |
| download | linux-f79ff92649efd5ef17f5267fe6f599c64e74e050.tar.xz | |
pata_efar: fix wrong PIO timings being programmed
* do not clear PIO timings for master when programming slave
* do not clear PIO timings for device on the other port when
programming slave device
Both changes 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')
| -rw-r--r-- | drivers/ata/pata_efar.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/ata/pata_efar.c b/drivers/ata/pata_efar.c index 2a6412f5d117..540c36426303 100644 --- a/drivers/ata/pata_efar.c +++ b/drivers/ata/pata_efar.c @@ -2,6 +2,7 @@ * pata_efar.c - EFAR PIIX clone controller driver * * (C) 2005 Red Hat + * (C) 2009 Bartlomiej Zolnierkiewicz * * Some parts based on ata_piix.c by Jeff Garzik and others. * @@ -118,12 +119,12 @@ static void efar_set_piomode (struct ata_port *ap, struct ata_device *adev) int shift = 4 * ap->port_no; u8 slave_data; - idetm_data &= 0xCC0F; + idetm_data &= 0xFF0F; idetm_data |= (control << 4); /* Slave timing in separate register */ pci_read_config_byte(dev, 0x44, &slave_data); - slave_data &= 0x0F << shift; + slave_data &= ap->port_no ? 0x0F : 0xF0; slave_data |= ((timings[pio][0] << 2) | timings[pio][1]) << shift; pci_write_config_byte(dev, 0x44, slave_data); } |