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authorTejun Heo <htejun@gmail.com>2006-08-22 14:06:46 +0200
committerJeff Garzik <jeff@garzik.org>2006-08-24 08:51:24 +0200
commitf3745a3f9fa39fa3c62f7d5b8549ee787d2c6848 (patch)
tree03bf0b2abfd9389dbadb69f024aa2761c28b9a5f /drivers/scsi
parent[PATCH] ata_piix: fix ghost device probing by honoring PCS present bits (diff)
downloadlinux-f3745a3f9fa39fa3c62f7d5b8549ee787d2c6848.tar.xz
linux-f3745a3f9fa39fa3c62f7d5b8549ee787d2c6848.zip
[PATCH] ata_piix: ignore PCS on ICH5
There have been a number of reports regarding some ICH5s failing to detect devices since the PCS handling update. Analysis shows that these problems are caused by bogus PCS values from those controllers. Before the PCS update, the driver didn't honor PCS regs exactly and probed them in many cases PCS reports no device. Now that PCS is honored exactly, these hardware problems are visible. This patch makes ICH5 ignore PCS. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
Diffstat (limited to 'drivers/scsi')
-rw-r--r--drivers/scsi/ata_piix.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/scsi/ata_piix.c b/drivers/scsi/ata_piix.c
index 01b3530cf6df..3b98f1813356 100644
--- a/drivers/scsi/ata_piix.c
+++ b/drivers/scsi/ata_piix.c
@@ -390,7 +390,8 @@ static struct ata_port_info piix_port_info[] = {
/* ich5_sata */
{
.sht = &piix_sht,
- .host_flags = ATA_FLAG_SATA | PIIX_FLAG_CHECKINTR,
+ .host_flags = ATA_FLAG_SATA | PIIX_FLAG_CHECKINTR |
+ PIIX_FLAG_IGNORE_PCS,
.pio_mask = 0x1f, /* pio0-4 */
.mwdma_mask = 0x07, /* mwdma0-2 */
.udma_mask = 0x7f, /* udma0-6 */