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ata_piix: fix MWDMA handling on PIIX3

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commit 6938594374 upstream.

Fix erroneous check for ap->udma_mask in do_pata_set_dmamode()
resulting in controller not being programmed properly for MWDMA.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Bartlomiej Zolnierkiewicz
2009-12-03 20:32:08 +01:00
committed by Greg Kroah-Hartman
parent 3de08a120a
commit 31cf6d8a86
1 changed files with 3 additions and 3 deletions
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6
drivers/ata/ata_piix.c
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@@ -869,10 +869,10 @@ static void do_pata_set_dmamode(struct ata_port *ap, struct ata_device *adev, in
(timings[pio][1] << 8);
}
if (ap->udma_mask) {
if (ap->udma_mask)
udma_enable &= ~(1 << devid);
pci_write_config_word(dev, master_port, master_data);
}
pci_write_config_word(dev, master_port, master_data);
}
/* Don't scribble on 0x48 if the controller does not support UDMA */
if (ap->udma_mask)