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| author | H. Peter Anvin <hpa@zytor.com> | 2009-03-03 21:05:42 -0800 |
|---|---|---|
| committer | H. Peter Anvin <hpa@zytor.com> | 2009-03-03 21:05:42 -0800 |
| commit | 2e22ea7cea0f7de86fd30df867fbf5b7e8eee0fd (patch) | |
| tree | 8b8e5583fb2787ff7107a6f59b114ddcd2c2f691 /drivers/ata/pata_legacy.c | |
| parent | 638bee71c83a2837b48062fdc5b222163cf53d79 (diff) | |
| parent | 645af4e9e0e32481e3336dda813688732c7e5f0f (diff) | |
Merge branch 'x86/core' into x86/mce2
Diffstat (limited to 'drivers/ata/pata_legacy.c')
| -rw-r--r-- | drivers/ata/pata_legacy.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/ata/pata_legacy.c b/drivers/ata/pata_legacy.c index 6c1d778b63a9..e3bc1b436284 100644 --- a/drivers/ata/pata_legacy.c +++ b/drivers/ata/pata_legacy.c @@ -283,9 +283,10 @@ static void pdc20230_set_piomode(struct ata_port *ap, struct ata_device *adev) static unsigned int pdc_data_xfer_vlb(struct ata_device *dev, unsigned char *buf, unsigned int buflen, int rw) { - if (ata_id_has_dword_io(dev->id)) { + int slop = buflen & 3; + /* 32bit I/O capable *and* we need to write a whole number of dwords */ + if (ata_id_has_dword_io(dev->id) && (slop == 0 || slop == 3)) { struct ata_port *ap = dev->link->ap; - int slop = buflen & 3; unsigned long flags; local_irq_save(flags); @@ -735,7 +736,7 @@ static unsigned int vlb32_data_xfer(struct ata_device *adev, unsigned char *buf, struct ata_port *ap = adev->link->ap; int slop = buflen & 3; - if (ata_id_has_dword_io(adev->id)) { + if (ata_id_has_dword_io(adev->id) && (slop == 0 || slop == 3)) { if (rw == WRITE) iowrite32_rep(ap->ioaddr.data_addr, buf, buflen >> 2); else |