diff options
| author | Albert Lee <albertcc@tw.ibm.com> | 2007-03-26 23:03:19 +0200 |
|---|---|---|
| committer | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2007-03-26 23:03:19 +0200 |
| commit | 362ebd83adb4ff2761b6f49a3570f501c3c7e467 (patch) | |
| tree | e2c9b4b4b73c4e70f2023fa7c81236a064b9748b /drivers/ide | |
| parent | b43c5f3dbe0c93dc205a7c69f892b94b7037d862 (diff) | |
| download | op-kernel-dev-362ebd83adb4ff2761b6f49a3570f501c3c7e467.zip op-kernel-dev-362ebd83adb4ff2761b6f49a3570f501c3c7e467.tar.gz | |
pdc202xx_new: Enable ATAPI DMA
[ bart: the ressurection of 2 years old patch which slipped thru the cracks
(thanks to Sergei Shtylyov for finding it) ]
These is the patch to turn on pdc202xx_new for ATAPI DMA. When testing, it
works fine without the (request_bufflen % 256) workaround as needed in libata.
ide-scsi filters out (pc->request_transfer % 1024) and use PIO, so the pdc202xx
ATAPI DMA problem is avoid. Both ide-cd and ide-scsi won't hit the ATAPI DMA
problem on pdc202xx_new.
Signed-off-by: Albert Lee <albertcc@tw.ibm.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Diffstat (limited to 'drivers/ide')
| -rw-r--r-- | drivers/ide/pci/pdc202xx_new.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/ide/pci/pdc202xx_new.c b/drivers/ide/pci/pdc202xx_new.c index 6ceb25b..ace9892 100644 --- a/drivers/ide/pci/pdc202xx_new.c +++ b/drivers/ide/pci/pdc202xx_new.c @@ -255,7 +255,7 @@ static int config_chipset_for_dma(ide_drive_t *drive) printk(KERN_WARNING "%s reduced to Ultra33 mode.\n", drive->name); } - if (drive->media != ide_disk) + if (drive->media != ide_disk && drive->media != ide_cdrom) return 0; if (id->capability & 4) { @@ -545,6 +545,7 @@ static void __devinit init_hwif_pdc202new(ide_hwif_t *hwif) hwif->drives[0].autotune = hwif->drives[1].autotune = 1; + hwif->atapi_dma = 1; hwif->ultra_mask = 0x7f; hwif->mwdma_mask = 0x07; |
