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>
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1 changed files with 2 additions and 2 deletions
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@ -173,10 +173,10 @@ static void it8213_set_dmamode (struct ata_port *ap, struct ata_device *adev)
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udma_enable |= (1 << devid);
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/* Load the UDMA mode number */
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/* Load the UDMA cycle time */
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pci_read_config_word(dev, 0x4A, &udma_timing);
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udma_timing &= ~(3 << (4 * devid));
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udma_timing |= (udma & 3) << (4 * devid);
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udma_timing |= u_speed << (4 * devid);
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pci_write_config_word(dev, 0x4A, udma_timing);
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/* Load the clock selection */
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