From: Tejun Heo Date: Tue, 22 Aug 2006 12:06:46 +0000 (+0900) Subject: [PATCH] ata_piix: ignore PCS on ICH5 X-Git-Tag: v2.6.18-rc5~60^2~2 X-Git-Url: http://pilppa.com/gitweb/?a=commitdiff_plain;h=f3745a3f9fa39fa3c62f7d5b8549ee787d2c6848;p=linux-2.6-omap-h63xx.git [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 Signed-off-by: Jeff Garzik --- diff --git a/drivers/scsi/ata_piix.c b/drivers/scsi/ata_piix.c index 01b3530cf6d..3b98f181335 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 */