[SCSI] downgrade lack of eh to warning and stack dump

drivers/scsi/hosts.c

@@ -53,21 +53,6 @@ static int scsi_host_next_hn;		/* host_no for next new host */
 static int scsi_hosts_registered;	/* cnt of registered scsi hosts */
 static int scsi_ignore_no_error_handling = 0;
 
-#ifdef MODULE
-MODULE_PARM(scsi_ignore_no_error_handling, "i");
-#else
-static int __init
-scsi_ignore_no_error_handling_setup(char *str)
-{
-        scsi_ignore_no_error_handling = 1;
-
-        return 1;
-}
-        
-__setup("scsi_ignore_no_error_handling=", scsi_ignore_no_error_handling_setup);
-#endif
-
-
 /**
  * scsi_tp_for_each_host - call function for each scsi host off a template
  * @shost_tp:	a pointer to a scsi host template
@@ -375,10 +360,7 @@ struct Scsi_Host * scsi_register(Scsi_Host_Template *shost_tp, int xtr_bytes)
            shost_tp->eh_bus_reset_handler == NULL &&
            shost_tp->eh_host_reset_handler == NULL) {
 		printk(KERN_ERR "ERROR: SCSI host `%s' has no error handling\nERROR: This is not a safe way to run your SCSI host\nERROR: The error handling must be added to this driver\n", hname);
-                if(!scsi_ignore_no_error_handling) {
-                        printk(KERN_ERR "ERROR: not attaching this host.\n\nERROR: to force attachment, boot with the scsi_ignore_no_error_handling flag");
-                        return NULL;
-                }
+		dump_stack();
         } 
 	gfp_mask = GFP_KERNEL;
 	if (shost_tp->unchecked_isa_dma && xtr_bytes)