scsi_dh_alua: improved logging

Issue different logging messages if ALUA is not supported
or the TPGS setting is invalid.

Signed-off-by: Hannes Reinecke <[email protected]>
Reviewed-by: Martin K. Petersen <[email protected]>
Reviewed-by: Christoph Hellwig <[email protected]>
Reviewed-by: Johannes Thumshirn <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>

diff --git a/drivers/scsi/device_handler/scsi_dh_alua.c b/drivers/scsi/device_handler/scsi_dh_alua.c
index 87c5ba86aff2a5813544577f104de80315ccd9ad..31a971f35d831826295d9d525ffe4c0f4455a78e 100644 (file)
--- a/drivers/scsi/device_handler/scsi_dh_alua.c
+++ b/drivers/scsi/device_handler/scsi_dh_alua.c
@@ -310,12 +310,18 @@ static int alua_check_tpgs(struct scsi_device *sdev, struct alua_dh_data *h)
                sdev_printk(KERN_INFO, sdev, "%s: supports implicit TPGS\n",
                            ALUA_DH_NAME);
                break;
-       default:
-               h->tpgs = TPGS_MODE_NONE;
+       case TPGS_MODE_NONE:
                sdev_printk(KERN_INFO, sdev, "%s: not supported\n",
                            ALUA_DH_NAME);
                err = SCSI_DH_DEV_UNSUPP;
                break;
+       default:
+               sdev_printk(KERN_INFO, sdev,
+                           "%s: unsupported TPGS setting %d\n",
+                           ALUA_DH_NAME, h->tpgs);
+               h->tpgs = TPGS_MODE_NONE;
+               err = SCSI_DH_DEV_UNSUPP;
+               break;
        }
 
        return err;