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pata_it8213: fix UDMA handling 

Driver should program the cycle timing not the mode number
(doing the latter results in wrong timings being used).

There shouldn't be any problems with it as IDE it8213 host driver
has been doing it this way for years.

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 20:32:10 +01:00 committed by Jeff Garzik
parent 3915044468
commit e0ee792b75
1 changed files with 2 additions and 2 deletions
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4
drivers/ata/pata_it8213.c
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@ -173,10 +173,10 @@ static void it8213_set_dmamode (struct ata_port *ap, struct ata_device *adev)
udma_enable |= (1 << devid);
/* Load the UDMA mode number */
/* Load the UDMA cycle time */
pci_read_config_word(dev, 0x4A, &udma_timing);
udma_timing &= ~(3 << (4 * devid));
udma_timing |= (udma & 3) << (4 * devid);
udma_timing |= u_speed << (4 * devid);
pci_write_config_word(dev, 0x4A, udma_timing);
/* Load the clock selection */