libata-scsi: Generate sense code for disabled devices

If a device is disabled after error recovery it doesn't make
any sense to generate an ATA sense, but we should rather
return a generic sense code indicating the device is gone.

Signed-off-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Tejun Heo <tj@kernel.org>

diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c
index 8b61d63..6d78b4b 100644 (file)
--- a/drivers/ata/libata-scsi.c
+++ b/drivers/ata/libata-scsi.c
@@ -1126,6 +1126,12 @@ static void ata_gen_ata_sense(struct ata_queued_cmd *qc)
 
        cmd->result = (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION;
 
+       if (ata_dev_disabled(dev)) {
+               /* Device disabled after error recovery */
+               /* LOGICAL UNIT NOT READY, HARD RESET REQUIRED */
+               ata_scsi_set_sense(dev, cmd, NOT_READY, 0x04, 0x21);
+               return;
+       }
        /* Use ata_to_sense_error() to map status register bits
         * onto sense key, asc & ascq.
         */