[PATCH 63/86] pata_radisys: fix UDMA handling

Bartlomiej Zolnierkiewicz
2009-11-25T17:10:44Z

From: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Subject: [PATCH] pata_radisys: fix UDMA handling

Set correct bits to switch between UDMA2 and UDMA4.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
---
drivers/ata/pata_radisys.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

Index: b/drivers/ata/pata_radisys.c
===================================================================
--- a/drivers/ata/pata_radisys.c
+++ b/drivers/ata/pata_radisys.c
@@ -139,9 +139,9 @@ static void radisys_set_dmamode (struct
pci_read_config_byte(dev, 0x4A, &udma_mode);

if (adev->xfer_mode == XFER_UDMA_2)
- udma_mode &= ~ (1 << adev->devno);
+ udma_mode &= ~(2 << (adev->devno * 4));
else /* UDMA 4 */
- udma_mode |= (1 << adev->devno);
+ udma_mode |= (2 << (adev->devno * 4));

pci_write_config_byte(dev, 0x4A, udma_mode);