s390/dasd: Improve ERP error messages

Some ERP errors still share the same message format and only add
different reason codes to it. These reason codes don't have any meaning
anymore.
Make the individual error messages more explicit and remove the reason
codes altogether. Comments around the error messages are also removed as
they provide no additional value anymore with more explicit messages.

Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
Reviewed-by: Stefan Haberland <sth@linux.ibm.com>
Signed-off-by: Stefan Haberland <sth@linux.ibm.com>
Link: https://lore.kernel.org/r/20240209124522.3697827-2-sth@linux.ibm.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>

drivers/s390/block/dasd_3990_erp.c

@@ -1048,11 +1048,9 @@ dasd_3990_erp_com_rej(struct dasd_ccw_req * erp, char *sense)
 		set_bit(DASD_CQR_SUPPRESS_CR, &erp->refers->flags);
 		erp = dasd_3990_erp_cleanup(erp, DASD_CQR_FAILED);
 	} else {
-		/* fatal error -  set status to FAILED
-		   internal error 09 - Command Reject */
 		if (!test_bit(DASD_CQR_SUPPRESS_CR, &erp->flags))
 			dev_err(&device->cdev->dev,
-				"An error occurred in the DASD device driver, reason=09\n");
+				"An I/O command request was rejected\n");
 
 		erp = dasd_3990_erp_cleanup(erp, DASD_CQR_FAILED);
 	}
@@ -1120,13 +1118,7 @@ dasd_3990_erp_equip_check(struct dasd_ccw_req * erp, char *sense)
 	erp->function = dasd_3990_erp_equip_check;
 
 	if (sense[1] & SNS1_WRITE_INHIBITED) {
-		dev_info(&device->cdev->dev,
-			    "Write inhibited path encountered\n");
-
-		/* vary path offline
-		   internal error 04 - Path should be varied off-line.*/
-		dev_err(&device->cdev->dev, "An error occurred in the DASD "
-			"device driver, reason=%s\n", "04");
+		dev_err(&device->cdev->dev, "Write inhibited path encountered\n");
 
 		erp = dasd_3990_erp_action_1(erp);
 
@@ -1277,11 +1269,7 @@ dasd_3990_erp_inv_format(struct dasd_ccw_req * erp, char *sense)
 		erp = dasd_3990_erp_action_4(erp, sense);
 
 	} else {
-		/* internal error 06 - The track format is not valid*/
-		dev_err(&device->cdev->dev,
-			"An error occurred in the DASD device driver, "
-			"reason=%s\n", "06");
-
+		dev_err(&device->cdev->dev, "Track format is not valid\n");
 		erp = dasd_3990_erp_cleanup(erp, DASD_CQR_FAILED);
 	}
 
@@ -1655,9 +1643,8 @@ dasd_3990_erp_action_1B_32(struct dasd_ccw_req * default_erp, char *sense)
 				     sizeof(struct LO_eckd_data), device);
 
 	if (IS_ERR(erp)) {
-		/* internal error 01 - Unable to allocate ERP */
-		dev_err(&device->cdev->dev, "An error occurred in the DASD "
-			"device driver, reason=%s\n", "01");
+		DBF_DEV_EVENT(DBF_ERR, device, "%s",
+			      "Unable to allocate ERP request (1B 32)");
 		return dasd_3990_erp_cleanup(default_erp, DASD_CQR_FAILED);
 	}
 
@@ -1799,10 +1786,8 @@ dasd_3990_update_1B(struct dasd_ccw_req * previous_erp, char *sense)
 	cpa = previous_erp->irb.scsw.cmd.cpa;
 
 	if (cpa == 0) {
-		/* internal error 02 -
-		   Unable to determine address of the CCW to be restarted */
-		dev_err(&device->cdev->dev, "An error occurred in the DASD "
-			"device driver, reason=%s\n", "02");
+		dev_err(&device->cdev->dev,
+			"Unable to determine address of to be restarted CCW\n");
 
 		previous_erp->status = DASD_CQR_FAILED;
 
@@ -2001,15 +1986,9 @@ dasd_3990_erp_compound_config(struct dasd_ccw_req * erp, char *sense)
 {
 
 	if ((sense[25] & DASD_SENSE_BIT_1) && (sense[26] & DASD_SENSE_BIT_2)) {
-
-		/* set to suspended duplex state then restart
-		   internal error 05 - Set device to suspended duplex state
-		   should be done */
 		struct dasd_device *device = erp->startdev;
 		dev_err(&device->cdev->dev,
-			"An error occurred in the DASD device driver, "
-			"reason=%s\n", "05");
-
+			"Compound configuration error occurred\n");
 	}
 
 	erp->function = dasd_3990_erp_compound_config;
@@ -2145,10 +2124,9 @@ dasd_3990_erp_inspect_32(struct dasd_ccw_req * erp, char *sense)
 			erp = dasd_3990_erp_int_req(erp);
 			break;
 
-		case 0x0F:  /* length mismatch during update write command
-			       internal error 08 - update write command error*/
-			dev_err(&device->cdev->dev, "An error occurred in the "
-				"DASD device driver, reason=%s\n", "08");
+		case 0x0F:
+			dev_err(&device->cdev->dev,
+				"Update write command error occurred\n");
 
 			erp = dasd_3990_erp_cleanup(erp, DASD_CQR_FAILED);
 			break;
@@ -2157,12 +2135,9 @@ dasd_3990_erp_inspect_32(struct dasd_ccw_req * erp, char *sense)
 			erp = dasd_3990_erp_action_10_32(erp, sense);
 			break;
 
-		case 0x15:	/* next track outside defined extend
-				   internal error 07 - The next track is not
-				   within the defined storage extent */
+		case 0x15:
 			dev_err(&device->cdev->dev,
-				"An error occurred in the DASD device driver, "
-				"reason=%s\n", "07");
+				"Track outside defined extent error occurred\n");
 
 			erp = dasd_3990_erp_cleanup(erp, DASD_CQR_FAILED);
 			break;