1 files changed, 7 insertions, 0 deletions

diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c
index 8ca2caeed017..451f79c6fbac 100644
--- a/drivers/ata/libata-scsi.c
+++ b/drivers/ata/libata-scsi.c
@@ -944,6 +944,13 @@ static unsigned int ata_scsi_start_stop_xlat(struct ata_queued_cmd *qc)
                 goto invalid_fld;       /* LOEJ bit set not supported */
         if (((cdb[4] >> 4) & 0xf) != 0)
                 goto invalid_fld;       /* power conditions not supported */
+
+        if (qc->dev->horkage & ATA_HORKAGE_SKIP_PM) {
+                /* the device lacks PM support, finish without doing anything */
+                scmd->result = SAM_STAT_GOOD;
+                return 1;
+        }
+
         if (cdb[4] & 0x1) {
                 tf->nsect = 1;  /* 1 sector, lba=0 */