@@ -2569,12 +2569,14 @@ static unsigned int ata_scsiop_read_cap(struct ata_scsi_args *args, u8 *rbuf)
rbuf[15] = lowest_aligned;
if (ata_id_has_trim(args->id)) {
- rbuf[14] |= 0x80; /* LBPME */
-
- if (ata_id_has_zero_after_trim(args->id) &&
- dev->horkage & ATA_HORKAGE_ZERO_AFTER_TRIM) {
- ata_dev_info(dev, "Enabling discard_zeroes_data\n");
- rbuf[14] |= 0x40; /* LBPRZ */
+ if (!(dev->horkage & ATA_HORKAGE_NOTRIM)) {
+ rbuf[14] |= 0x80; /* LBPME */
+
+ if (ata_id_has_zero_after_trim(args->id) &&
+ dev->horkage & ATA_HORKAGE_ZERO_AFTER_TRIM) {
+ ata_dev_info(dev, "Enabling discard_zeroes_data\n");
+ rbuf[14] |= 0x40; /* LBPRZ */
+ }
}
}
}
@@ -569,6 +569,8 @@ 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))
@@ -431,6 +431,8 @@ enum {
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 */
+ ATA_HORKAGE_NOTRIM = (1 << 24), /* don't use TRIM */
+
/* DMA mask for user DMA control: User visible values; DO NOT
renumber */
sone disks lose data at trim also with disabled ncq so this add a switch to force disable trim. Signed-off-by: Arne Fitzenreiter <arne_f@ipfire.org> --- drivers/ata/libata-scsi.c | 14 ++++++++------ drivers/ata/libata-transport.c | 2 ++ include/linux/libata.h | 2 ++ 3 files changed, 12 insertions(+), 6 deletions(-)