ata_piix: fix MWDMA handling on PIIX3

commit 6938594374ee506e91a4c03117a034ea0ed66783 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>

diff --git a/drivers/ata/ata_piix.c b/drivers/ata/ata_piix.c
index 9ac4e378992ef60d71634121379b91479c8660f2..0c6155f51173484a66bf80b5e5efe6f1f1fc464c 100644 (file)
--- a/drivers/ata/ata_piix.c
+++ b/drivers/ata/ata_piix.c
@@ -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)