diff --git a/poky/bitbake/lib/bb/data.py b/poky/bitbake/lib/bb/data.py
index 0d75d0c..b0683c5 100644
--- a/poky/bitbake/lib/bb/data.py
+++ b/poky/bitbake/lib/bb/data.py
@@ -79,7 +79,7 @@
     return d.expand(s, varname)
 
 def expandKeys(alterdata, readdata = None):
-    if readdata == None:
+    if readdata is None:
         readdata = alterdata
 
     todolist = {}
@@ -365,7 +365,7 @@
     #bb.note("Variable %s references %s and calls %s" % (key, str(deps), str(execs)))
     #d.setVarFlag(key, "vardeps", deps)
 
-def generate_dependencies(d):
+def generate_dependencies(d, whitelist):
 
     keys = set(key for key in d if not key.startswith("__"))
     shelldeps = set(key for key in d.getVar("__exportlist", False) if d.getVarFlag(key, "export", False) and not d.getVarFlag(key, "unexport", False))
@@ -380,7 +380,7 @@
         newdeps = deps[task]
         seen = set()
         while newdeps:
-            nextdeps = newdeps
+            nextdeps = newdeps - whitelist
             seen |= nextdeps
             newdeps = set()
             for dep in nextdeps: