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| author | Martin K. Petersen <martin.petersen@oracle.com> | 2015-05-04 21:54:21 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-08-03 09:29:04 -0700 |
| commit | a1fcca3abfc219a53e397d131d253603d9f04015 (patch) | |
| tree | 1d2cab086095999b9d88a7ba24a7b7ac17b31337 /include | |
| parent | 822d2eac314e6d7ffc3e98d71676d3d9f6ef7894 (diff) | |
| download | lwn-a1fcca3abfc219a53e397d131d253603d9f04015.tar.gz lwn-a1fcca3abfc219a53e397d131d253603d9f04015.zip | |
libata: Fall back to unqueued READ LOG EXT if the DMA variant fails
commit 5d3abf8ff67f49271a42c0f7fa4f20f9e046bf0e upstream.
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/libata.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/libata.h b/include/linux/libata.h index 28aeae46f355..3831a3eaaa05 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -431,6 +431,7 @@ 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 */ |