PRD: getConnectedParent() issue in MemDealloc::dimmList()

Change-Id: Iead98b6d1a67bf83639f085b952359e9a5908899
CQ: SW418940
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/54793
Reviewed-by: Benjamin J. Weisenbeck <bweisenb@us.ibm.com>
Tested-by: Jenkins Server <pfd-jenkins+hostboot@us.ibm.com>
Reviewed-by: Caleb N. Palmer <cnpalmer@us.ibm.com>
Reviewed-by: Brian J. Stegmiller <bjs@us.ibm.com>
Reviewed-by: Zane C. Shelley <zshelle@us.ibm.com>
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/55005
Tested-by: Jenkins OP Build CI <op-jenkins+hostboot@us.ibm.com>
Tested-by: Jenkins OP HW <op-hw-jenkins+hostboot@us.ibm.com>
Tested-by: FSP CI Jenkins <fsp-CI-jenkins+hostboot@us.ibm.com>

src/usr/diag/prdf/plat/mem/prdfMemDynDealloc.C

@@ -662,32 +662,47 @@ int32_t dimmList( TargetHandleList  & i_dimmList )
 
 int32_t dimmList( TargetHandleList  & i_dimmList )
 {
-    if (i_dimmList.size() == 0)
-        return SUCCESS;
-
-    // Determine MBA/MCA
-    TYPE T = TYPE_MCA;
-    TargetHandle_t dimmTgt = i_dimmList[0];
-    TargetHandle_t tgt = getConnectedParent( dimmTgt, T );
-    if ( NULL == tgt)
-    {
-        T = TYPE_MBA;
-        tgt = getConnectedParent( dimmTgt, T );
-    }
+    #define PRDF_FUNC "[MemDealloc::dimmList] "
 
-    if (tgt == NULL)
+    int32_t o_rc = SUCCESS;
+
+    do
     {
-        PRDF_ERR( "[MemDealloc::dimmList] get parent tgt failed for 0x%08X",
-                  getHuid(dimmTgt));
-        return FAIL;
-    }
+        if ( i_dimmList.empty() ) break;
+
+        // Determine what target these DIMMs are connected to.
+        // Note that we cannot use getConnectedParent() because it will assert
+        // if there is no parent of that type.
+
+        TargetHandle_t dimmTrgt = i_dimmList.front();
+        TargetHandleList list;
+
+        // First, check for MCAs.
+        list = getConnected( dimmTrgt, TYPE_MCA );
+        if ( !list.empty() )
+        {
+            o_rc = dimmList<TYPE_MCA>( i_dimmList );
+            break;
+        }
+
+        // Second, check for MBAs.
+        list = getConnected( dimmTrgt, TYPE_MBA );
+        if ( !list.empty() )
+        {
+            o_rc = dimmList<TYPE_MBA>( i_dimmList );
+            break;
+        }
 
-    if ( T == TYPE_MCA )
-       return dimmList<TYPE_MCA>( i_dimmList );
-    else if ( T == TYPE_MBA )
-       return dimmList<TYPE_MBA>( i_dimmList );
-    else
-       return FAIL;
+        // If we get here we did not find a supported target.
+        PRDF_ERR( PRDF_FUNC "Unsupported connected parent to dimm 0x%08x",
+                  getHuid(dimmTrgt) );
+        PRDF_ASSERT(false); // code bug
+
+    } while (0);
+
+    return o_rc;
+
+    #undef PRDF_FUNC
 }
 
 } //namespace MemDealloc