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libata: blacklist Seagate drives which time out FLUSH_CACHE when used with NCQ

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Some recent Seagate harddrives have firmware bug which causes FLUSH
CACHE to timeout under certain circumstances if NCQ is being used.
This can be worked around by disabling NCQ and fixed by updating the
firmware.  Implement ATA_HORKAGE_FIRMWARE_UPDATE and blacklist these
devices.

The wiki page has been updated to contain information on this issue.

  http://ata.wiki.kernel.org/index.php/Known_issues

Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
This commit is contained in:
Tejun Heo 2008-11-27 13:36:48 +09:00 • committed by Jeff Garzik
parent 03f60840fa
commit ac70a964b0
2 changed files with 22 additions and 0 deletions
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1
include/linux/libata.h
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@ -375,6 +375,7 @@ enum {
ATA_HORKAGE_BRIDGE_OK = (1 << 10), /* no bridge limits */
ATA_HORKAGE_ATAPI_MOD16_DMA = (1 << 11), /* use ATAPI DMA for commands
not multiple of 16 bytes */
ATA_HORKAGE_FIRMWARE_WARN = (1 << 12), /* firwmare update warning */
/* DMA mask for user DMA control: User visible values; DO NOT
renumber */