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authorMartin K. Petersen <martin.petersen@oracle.com>2015-05-04 21:54:21 -0400
committerTejun Heo <tj@kernel.org>2015-05-05 09:30:19 -0400
commit5d3abf8ff67f49271a42c0f7fa4f20f9e046bf0e (patch)
treebe812ae236e94d84fab9435c0ca41e947e6faa3a /include/linux/libata.h
parent406c057c4e00744453d5b0731eb23629ec14dcdf (diff)
libata: Fall back to unqueued READ LOG EXT if the DMA variant fails
Some devices advertise support for the READ/WRITE LOG DMA EXT commands but fail when we try to issue them. This can lead to queued TRIM being unintentionally disabled since the relevant feature flag is located in a general purpose log page. Fall back to unqueued READ LOG EXT if the DMA variant fails while reading a log page. Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Tejun Heo <tj@kernel.org>
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 8dad4a307bb8..c3ef58014b33 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -424,6 +424,7 @@ enum {
ATA_HORKAGE_NOLPM = (1 << 20), /* don't use LPM */
ATA_HORKAGE_WD_BROKEN_LPM = (1 << 21), /* some WDs have broken LPM */
ATA_HORKAGE_ZERO_AFTER_TRIM = (1 << 22),/* guarantees zero after trim */
+ ATA_HORKAGE_NO_NCQ_LOG = (1 << 23), /* don't use NCQ for log read */
/* DMA mask for user DMA control: User visible values; DO NOT
renumber */