diff options
| author | Arne Fitzenreiter <arne_f@ipfire.org> | 2015-07-15 13:54:36 +0200 |
|---|---|---|
| committer | Sasha Levin <sasha.levin@oracle.com> | 2015-08-27 13:26:11 -0400 |
| commit | 3fa84d66219c984590bd59959e283fba6d4bc9e0 (patch) | |
| tree | bce8980551a58fb49aef9e0289f68f87422f7a6f | |
| parent | 90eebd37c8175cb60c99b9cd1e3f5e61eb7b7468 (diff) | |
libata: add ATA_HORKAGE_NOTRIM
[ Upstream commit 71d126fd28de2d4d9b7b2088dbccd7ca62fad6e0 ]
Some devices lose data on TRIM whether queued or not. This patch adds
a horkage to disable TRIM.
tj: Collapsed unnecessary if() nesting.
Signed-off-by: Arne Fitzenreiter <arne_f@ipfire.org>
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: stable@vger.kernel.org
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
| -rw-r--r-- | drivers/ata/libata-scsi.c | 3 | ||||
| -rw-r--r-- | drivers/ata/libata-transport.c | 2 | ||||
| -rw-r--r-- | include/linux/libata.h | 2 |
3 files changed, 6 insertions, 1 deletions
diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c index a19479282b65..78d56c9390cc 100644 --- a/drivers/ata/libata-scsi.c +++ b/drivers/ata/libata-scsi.c @@ -2514,7 +2514,8 @@ static unsigned int ata_scsiop_read_cap(struct ata_scsi_args *args, u8 *rbuf) rbuf[14] = (lowest_aligned >> 8) & 0x3f; rbuf[15] = lowest_aligned; - if (ata_id_has_trim(args->id)) { + if (ata_id_has_trim(args->id) && + !(dev->horkage & ATA_HORKAGE_NOTRIM)) { rbuf[14] |= 0x80; /* LBPME */ if (ata_id_has_zero_after_trim(args->id) && diff --git a/drivers/ata/libata-transport.c b/drivers/ata/libata-transport.c index c660923c4b28..fd29b7224082 100644 --- a/drivers/ata/libata-transport.c +++ b/drivers/ata/libata-transport.c @@ -568,6 +568,8 @@ show_ata_dev_trim(struct device *dev, if (!ata_id_has_trim(ata_dev->id)) mode = "unsupported"; + else if (ata_dev->horkage & ATA_HORKAGE_NOTRIM) + mode = "forced_unsupported"; else if (ata_dev->horkage & ATA_HORKAGE_NO_NCQ_TRIM) mode = "forced_unqueued"; else if (ata_fpdma_dsm_supported(ata_dev)) diff --git a/include/linux/libata.h b/include/linux/libata.h index c79583dc6ca8..a60e04bcda0f 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -430,6 +430,8 @@ 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_NOTRIM = (1 << 24), /* don't use TRIM */ + /* DMA mask for user DMA control: User visible values; DO NOT renumber */ |