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authorTejun Heo <tj@kernel.org>2008-11-26 23:36:48 -0500
committerJeff Garzik <jgarzik@redhat.com>2008-12-01 13:49:27 -0500
commitac70a964b0e22a95af3628c344815857a01461b7 (patch)
treec5711139bd95053b9b5c8897e3f7cd50b8331141 /include/linux/libata.h
parent03f60840fa462e92220b093f778b2426ceab23af (diff)
libata: blacklist Seagate drives which time out FLUSH_CACHE when used with NCQ
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>
Diffstat (limited to 'include/linux/libata.h')
-rw-r--r--include/linux/libata.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/libata.h b/include/linux/libata.h
index 59b0f1c807b5..ed3f26eb5df1 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -375,6 +375,7 @@ enum {
375 ATA_HORKAGE_BRIDGE_OK = (1 << 10), /* no bridge limits */ 375 ATA_HORKAGE_BRIDGE_OK = (1 << 10), /* no bridge limits */
376 ATA_HORKAGE_ATAPI_MOD16_DMA = (1 << 11), /* use ATAPI DMA for commands 376 ATA_HORKAGE_ATAPI_MOD16_DMA = (1 << 11), /* use ATAPI DMA for commands
377 not multiple of 16 bytes */ 377 not multiple of 16 bytes */
378 ATA_HORKAGE_FIRMWARE_WARN = (1 << 12), /* firwmare update warning */
378 379
379 /* DMA mask for user DMA control: User visible values; DO NOT 380 /* DMA mask for user DMA control: User visible values; DO NOT
380 renumber */ 381 renumber */