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libata: kill ATA_HORKAGE_DMA_RW_ONLY

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ATA_HORKAGE_DMA_RW_ONLY for TORiSAN is verified to be subset of using
DMA for ATAPI commands which aren't aligned to 16 bytes.  As libata
now doesn't use DMA for unaligned ATAPI commands, the horkage is
redundant.  Kill it.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Tejun Heo 2007-06-27 02:49:38 +09:00 committed by Jeff Garzik
parent b9a4197e26
commit 40a1d531f6
2 changed files with 1 additions and 7 deletions
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7
drivers/ata/libata-core.c
View file

@ -2046,10 +2046,6 @@ int ata_dev_configure(struct ata_device *dev)
dev->max_sectors = min_t(unsigned int, ATA_MAX_SECTORS_128,
dev->max_sectors);
/* limit ATAPI DMA to R/W commands only */
if (ata_device_blacklisted(dev) & ATA_HORKAGE_DMA_RW_ONLY)
dev->horkage |= ATA_HORKAGE_DMA_RW_ONLY;
if (ap->ops->dev_config)
ap->ops->dev_config(dev);
@ -3780,8 +3776,7 @@ static const struct ata_blacklist_entry ata_device_blacklist [] = {
{ "IOMEGA ZIP 250 ATAPI", NULL, ATA_HORKAGE_NODMA }, /* temporary fix */
/* Weird ATAPI devices */
{ "TORiSAN DVD-ROM DRD-N216", NULL, ATA_HORKAGE_MAX_SEC_128 |
ATA_HORKAGE_DMA_RW_ONLY },
{ "TORiSAN DVD-ROM DRD-N216", NULL, ATA_HORKAGE_MAX_SEC_128 },
/* Devices we expect to fail diagnostics */

1
include/linux/libata.h
View file

@ -298,7 +298,6 @@ enum {
ATA_HORKAGE_NODMA = (1 << 1), /* DMA problems */
ATA_HORKAGE_NONCQ = (1 << 2), /* Don't use NCQ */
ATA_HORKAGE_MAX_SEC_128 = (1 << 3), /* Limit max sects to 128 */
ATA_HORKAGE_DMA_RW_ONLY = (1 << 4), /* ATAPI DMA for RW only */
};
enum hsm_task_states {