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6639 uhci_qh walker contains whacky boolean logic

@@ -22,12 +22,10 @@
 /*
  * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
  * Use is subject to license terms.
  */
 
-#pragma ident   "%Z%%M% %I%     %E% SMI"
-
 #include <gelf.h>
 
 #include <sys/mdb_modapi.h>
 #include <mdb/mdb_ks.h>
 

@@ -582,12 +580,12 @@
         if (wsp->walk_addr == NULL || wsp->walk_addr & HC_END_OF_LIST)  {
                 return (WALK_DONE);
         }
 
         /* Make sure next element is a QH.  If a TD, stop.  */
-        if (!  ((((queue_head_t *)wsp->walk_data)->link_ptr) & HC_QUEUE_HEAD)
-            == HC_QUEUE_HEAD)  {
+        if (((((queue_head_t *)wsp->walk_data)->link_ptr) & HC_QUEUE_HEAD)
+            != HC_QUEUE_HEAD)  {
                 return (WALK_DONE);
         }
 
         /* Strip terminate etc. bits.  */
         wsp->walk_addr &= QH_LINK_PTR_MASK;