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amd74xx: don't change UDMA settings when programming PIO timings

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Based on libata pata_amd host driver.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Bartlomiej Zolnierkiewicz 2010-01-18 07:18:17 +00:00 committed by David S. Miller
parent d23f33de3c
commit 31bbb668fb
1 changed files with 4 additions and 3 deletions
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7
drivers/ide/amd74xx.c
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@ -3,7 +3,7 @@
* IDE driver for Linux.
*
* Copyright (c) 2000-2002 Vojtech Pavlik
* Copyright (c) 2007-2008 Bartlomiej Zolnierkiewicz
* Copyright (c) 2007-2010 Bartlomiej Zolnierkiewicz
*
* Based on the work of:
* Andre Hedrick
@ -70,7 +70,8 @@ static void amd_set_speed(struct pci_dev *dev, u8 dn, u8 udma_mask,
default: return;
}
pci_write_config_byte(dev, AMD_UDMA_TIMING + offset + (3 - dn), t);
if (timing->udma)
pci_write_config_byte(dev, AMD_UDMA_TIMING + offset + 3 - dn, t);
}
/*
@ -340,6 +341,6 @@ static void __exit amd74xx_ide_exit(void)
module_init(amd74xx_ide_init);
module_exit(amd74xx_ide_exit);
MODULE_AUTHOR("Vojtech Pavlik");
MODULE_AUTHOR("Vojtech Pavlik, Bartlomiej Zolnierkiewicz");
MODULE_DESCRIPTION("AMD PCI IDE driver");
MODULE_LICENSE("GPL");