From 82563232c79c6f0099a02f7d2652ee7aee3fe9ba Mon Sep 17 00:00:00 2001
From: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Date: Thu, 3 Dec 2009 17:52:16 -0500
Subject: [libata] MWDMA0 is unsupported on PIIX-like PATA controllers

MWDMA0 timings cannot be met with the PIIX based controller
programming interface.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
---
 drivers/ata/pata_rdc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'drivers/ata/pata_rdc.c')

diff --git a/drivers/ata/pata_rdc.c b/drivers/ata/pata_rdc.c
index c843a1e07c4f..237a24d41a2d 100644
--- a/drivers/ata/pata_rdc.c
+++ b/drivers/ata/pata_rdc.c
@@ -284,7 +284,7 @@ static struct ata_port_info rdc_port_info = {
 
 	.flags		= ATA_FLAG_SLAVE_POSS,
 	.pio_mask	= ATA_PIO4,
-	.mwdma_mask	= ATA_MWDMA2,
+	.mwdma_mask	= ATA_MWDMA12_ONLY,
 	.udma_mask	= ATA_UDMA5,
 	.port_ops	= &rdc_pata_ops,
 };
-- 
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