Tejun Heo wrote:
Back in 2.6.17-rc2, a libata module parameter was added for atapi_dmadir.
That's nice, but most SATA devices which need it will tell us about it
in their IDENTIFY PACKET response, as bit-15 of word-62 of the
returned data (as per ATA7, ATA8 specifications).
So for those which specify it, we should automatically use the DMADIR bit.
Otherwise, disc writing will fail by default on many SATA-ATAPI drives.
This patch adds ATA_DFLAG_DMADIR and make ata_dev_configure() set it
if atapi_dmadir is set or identify data indicates DMADIR is necessary.
atapi_xlat() is converted to check ATA_DFLAG_DMADIR before setting
DMADIR.
Original patch is from Mark Lord.
Signed-off-by: Tejun Heo <[EMAIL PROTECTED]>
Cc: Mark Lord <[EMAIL PROTECTED]>
---
I don't have a bridge which sets DMADIR but so only checked atapi_dmadir
parameter. Thanks.
drivers/ata/libata-core.c | 11 +++++++++--
drivers/ata/libata-scsi.c | 3 ++-
include/linux/ata.h | 5 +++++
include/linux/libata.h | 1 +
4 files changed, 17 insertions(+), 3 deletions(-)
applied
-
To unsubscribe from this list: send the line "unsubscribe linux-ide" in
the body of a message to [EMAIL PROTECTED]
More majordomo info at http://vger.kernel.org/majordomo-info.html
