asgardius/android_kernel_motorola_sm6225
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

pata_radisys: fix UDMA handling

Browse source 
Set correct bits to switch between UDMA2 and UDMA4.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
This commit is contained in:
Bartlomiej Zolnierkiewicz 2009-12-03 20:32:13 +01:00 committed by Jeff Garzik
parent a809c68752
commit dd4a43c979
1 changed files with 2 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

4
drivers/ata/pata_radisys.c
View file

@ -139,9 +139,9 @@ static void radisys_set_dmamode (struct ata_port *ap, struct ata_device *adev)
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);