SAT-3 says REQUEST SENSE should issue CHECK POWER and return a sense status indicating the drive's power status. --- drivers/ata/libata-scsi.c | 40 ++++++++++++++++++++++++++++++++++------ 1 file changed, 34 insertions(+), 6 deletions(-) diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c index f92eb21..8b17352 100644 --- a/drivers/ata/libata-scsi.c +++ b/drivers/ata/libata-scsi.c @@ -3313,6 +3313,38 @@ static unsigned int ata_scsi_mode_select_xlat(struct ata_queued_cmd *qc) return 1; } +static void ata_scsi_request_sense_complete(struct ata_queued_cmd *qc) +{ + struct scsi_cmnd *cmd = qc->scsicmd; + cmd->result = (DRIVER_SENSE << 24); + if (qc->result_tf.nsect == 0) + /* POWER STATE CHANGE TO STANDBY */ + { + scsi_build_sense_buffer(0, cmd->sense_buffer, 0, 0x5E, 0x43); + } + else scsi_build_sense_buffer(0, cmd->sense_buffer, 0, 0, 0); + qc->scsidone(cmd); + ata_qc_free(qc); +} + +/** + * ata_scsi_request_sense_xlat - Simulate REQUEST SENSE command + * @qc: Storage for translated ATA taskfile + * + * Converts a REQUEST SENSE command to an ATA CHECK POWER MODE taskfile. + * + * LOCKING: + * spin_lock_irqsave(host lock) + */ +static unsigned int ata_scsi_request_sense_xlat(struct ata_queued_cmd *qc) +{ + qc->tf.command = ATA_CMD_CHK_POWER; + qc->flags |= ATA_QCFLAG_RESULT_TF; + qc->tf.protocol = ATA_PROT_NODATA; + qc->complete_fn = ata_scsi_request_sense_complete; + return 0; +} + /** * ata_get_xlat_func - check if SCSI to ATA translation is possible * @dev: ATA device @@ -3360,6 +3392,8 @@ static inline ata_xlat_func_t ata_get_xlat_func(struct ata_device *dev, u8 cmd) case START_STOP: return ata_scsi_start_stop_xlat; + case REQUEST_SENSE: + return ata_scsi_request_sense_xlat; } return NULL; @@ -3565,12 +3599,6 @@ void ata_scsi_simulate(struct ata_device *dev, struct scsi_cmnd *cmd) ata_scsi_rbuf_fill(&args, ata_scsiop_report_luns); break; - case REQUEST_SENSE: - ata_scsi_set_sense(cmd, 0, 0, 0); - cmd->result = (DRIVER_SENSE << 24); - cmd->scsi_done(cmd); - break; - /* if we reach this, then writeback caching is disabled, * turning this into a no-op. */ -- 1.8.3.2 -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html