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authorBartlomiej Zolnierkiewicz <bzolnier@gmail.com>2010-01-18 07:18:17 +0000
committerDavid S. Miller <davem@davemloft.net>2010-01-19 01:24:58 -0800
commit31bbb668fbe71a207d38ecd1797f4cd5b8bd710b (patch)
treed4ccfc890f700fcfff0539d46760709f24e7a0cc /drivers/ide/amd74xx.c
parentd23f33de3c7fdc4bcbdd7a75d3f7b7be32caf18e (diff)
downloadlinux-31bbb668fbe71a207d38ecd1797f4cd5b8bd710b.tar.bz2
amd74xx: don't change UDMA settings when programming PIO timings
Based on libata pata_amd host driver. Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/ide/amd74xx.c')
-rw-r--r--drivers/ide/amd74xx.c7
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/ide/amd74xx.c b/drivers/ide/amd74xx.c
index 628cd2e5fed8..108e9b676859 100644
--- a/drivers/ide/amd74xx.c
+++ b/drivers/ide/amd74xx.c
@@ -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");