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Commit dd221f9c authored by Bartlomiej Zolnierkiewicz's avatar Bartlomiej Zolnierkiewicz Committed by Jeff Garzik
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pata_efar: fix wrong MWDMA timings being programmed 



Do not clear MWDMA timings for device on the other port when
programming slave device.

This change should be safe as this is how we have been doing
things in IDE slc90e66 host driver for years.

Signed-off-by: default avatarBartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: default avatarJeff Garzik <jgarzik@redhat.com>
parent f79ff926

drivers/ata/pata_efar.c

+1 −1
Original line number Diff line number Diff line
@@ -201,7 +201,7 @@ static void efar_set_dmamode (struct ata_port *ap, struct ata_device *adev) 
			master_data &= 0xFF4F;  /* Mask out IORDY|TIME1|DMAONLY */

			master_data |= control << 4;

			pci_read_config_byte(dev, 0x44, &slave_data);

			slave_data &= (0x0F + 0xE1 * ap->port_no);

			slave_data &= ap->port_no ? 0x0F : 0xF0;

			/* Load the matching timing */

			slave_data |= ((timings[pio][0] << 2) | timings[pio][1]) << (ap->port_no ? 4 : 0);

			pci_write_config_byte(dev, 0x44, slave_data);