svn commit: r249815 - head/sys/dev/ciss

[Sean Bruno]

Author: sbruno
Date: Tue Apr 23 18:29:51 2013
New Revision: 249815
URL: http://svnweb.freebsd.org/changeset/base/249815

Log:
  Return a lun count of 1 and a lun id of 0 when CAM attempts a REPORT_LUNS
  command on a disk device.  This quieseces some noise on the console that
  recently appeared.
  
  Obtained from:	Yahoo! Inc.
  MFC after:	2 weeks

Modified:
  head/sys/dev/ciss/ciss.c

Modified: head/sys/dev/ciss/ciss.c
==============================================================================
--- head/sys/dev/ciss/ciss.c	Tue Apr 23 17:03:10 2013	(r249814)
+++ head/sys/dev/ciss/ciss.c	Tue Apr 23 18:29:51 2013	(r249815)
@@ -3202,6 +3202,19 @@ ciss_cam_emulate(struct ciss_softc *sc, 
 	}
     }
 
+    /* 
+     * A CISS target can only ever have one lun per target. REPORT_LUNS requires
+     * at least one LUN field to be pre created for us, so snag it and fill in
+     * the least significant byte indicating 1 LUN here.  Emulate the command
+     * return to shut up warning on console of a CDB error.  swb 
+     */
+    if (opcode == REPORT_LUNS && csio->dxfer_len > 0) {
+       csio->data_ptr[3] = 8;
+       csio->ccb_h.status |= CAM_REQ_CMP;
+       xpt_done((union ccb *)csio);
+       return(1);
+    }
+
     return(0);
 }