diff options
| author | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2009-04-20 22:31:25 +0200 |
|---|---|---|
| committer | Jeff Garzik <jgarzik@redhat.com> | 2009-05-11 14:30:07 -0400 |
| commit | 6ad58b245a543461bd55d51b8303f555419687b2 (patch) | |
| tree | 7ab7d0c00e7092b0b0020a65dd2ea69e7031877b /drivers/ata/pata_pdc202xx_old.c | |
| parent | 29b7e43c310bdc20d240c7674d9073f6c1c12a3f (diff) | |
| download | lwn-6ad58b245a543461bd55d51b8303f555419687b2.tar.gz lwn-6ad58b245a543461bd55d51b8303f555419687b2.zip | |
pata_pdc202xx_old: fix UDMA33 handling
The original driver doesn't use 66 MHz clock for UDMA33.
[ The alternative solution would be to adjust UDMA33 timings
for 66 MHz clock but I think that it is safer to stick with
old & tested behavior for now. ]
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Diffstat (limited to 'drivers/ata/pata_pdc202xx_old.c')
| -rw-r--r-- | drivers/ata/pata_pdc202xx_old.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/ata/pata_pdc202xx_old.c b/drivers/ata/pata_pdc202xx_old.c index 5fedb3d4032b..2f3c9bed63d9 100644 --- a/drivers/ata/pata_pdc202xx_old.c +++ b/drivers/ata/pata_pdc202xx_old.c @@ -2,7 +2,7 @@ * pata_pdc202xx_old.c - Promise PDC202xx PATA for new ATA layer * (C) 2005 Red Hat Inc * Alan Cox <alan@lxorguk.ukuu.org.uk> - * (C) 2007 Bartlomiej Zolnierkiewicz + * (C) 2007,2009 Bartlomiej Zolnierkiewicz * * Based in part on linux/drivers/ide/pci/pdc202xx_old.c * @@ -158,7 +158,7 @@ static void pdc2026x_bmdma_start(struct ata_queued_cmd *qc) u32 len; /* Check we keep host level locking here */ - if (adev->dma_mode >= XFER_UDMA_2) + if (adev->dma_mode > XFER_UDMA_2) iowrite8(ioread8(clock) | sel66, clock); else iowrite8(ioread8(clock) & ~sel66, clock); @@ -212,7 +212,7 @@ static void pdc2026x_bmdma_stop(struct ata_queued_cmd *qc) iowrite8(ioread8(clock) & ~sel66, clock); } /* Flip back to 33Mhz for PIO */ - if (adev->dma_mode >= XFER_UDMA_2) + if (adev->dma_mode > XFER_UDMA_2) iowrite8(ioread8(clock) & ~sel66, clock); ata_bmdma_stop(qc); pdc202xx_set_piomode(ap, adev); |