Hello.
On 12/17/2013 02:30 AM, Phillip Susi wrote:
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;
Please insert empty line here, after declaration.
+ cmd->result = (DRIVER_SENSE << 24);
() not needed.
+ if (qc->result_tf.nsect == 0)
+ /* POWER STATE CHANGE TO STANDBY */
+ {
Wrong *if* style, should be "*if* () {" on the same line.
+ scsi_build_sense_buffer(0, cmd->sense_buffer, 0, 0x5E, 0x43);
+ }
+ else scsi_build_sense_buffer(0, cmd->sense_buffer, 0, 0, 0);
Wrong style again, scsi_build_sense_buffer() should be on its own line,
and {} must be used in both branches of *if* if used in one.
+ 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;
Isn't it an optional command, belonging to the power management feature set?
WBR, Sergei
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