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authorBrett Russ <russb@emc.com>2005-09-01 21:53:34 -0400
committerJeff Garzik <jgarzik@pobox.com>2005-09-07 01:54:54 -0400
commit7da79312830e6d9b3f6ee06b86c3a35caba2f6e7 (patch)
treeafd386f0cee850f62fdb9245105e02fe49631d28 /drivers/scsi/ahci.c
parent4706df3d3c42af802597d82c8b1542c3d52eab23 (diff)
[PATCH] libata: fix pio_mask values (take 2)
ata_get_mode_mask() uses bits 3 and 4 in the pio_mask to represent PIO modes 3 and 4. The value read from the drive, which reports support for PIO3 and PIO4 in bits 0 and 1, is shifted left by 3 bits and OR'd with 0x7 (which then corresponds to PIO 2-0 in libata). Thus, the drivers below need adjustments to comply with the way pio_mask is used. I changed the masks from the commented values to all support PIO4-0, since the spec mandates that PIO0-2 are supported and there's no reason not to support PIO3 IMO. Signed-off-by: Brett Russ <russb@emc.com> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
Diffstat (limited to 'drivers/scsi/ahci.c')
-rw-r--r--drivers/scsi/ahci.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/scsi/ahci.c b/drivers/scsi/ahci.c
index 31065261de8..320df6cd3de 100644
--- a/drivers/scsi/ahci.c
+++ b/drivers/scsi/ahci.c
@@ -250,7 +250,7 @@ static struct ata_port_info ahci_port_info[] = {
.host_flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
ATA_FLAG_SATA_RESET | ATA_FLAG_MMIO |
ATA_FLAG_PIO_DMA,
- .pio_mask = 0x03, /* pio3-4 */
+ .pio_mask = 0x1f, /* pio0-4 */
.udma_mask = 0x7f, /* udma0-6 ; FIXME */
.port_ops = &ahci_ops,
},