From: Zhang Rui [mailto:rui.zhang@intel.com]

  * - thermal zone devices lifecycle: registration, unregistration,
  *				     binding, and unbinding.
  */
-static int get_ida(struct ida *ida, struct mutex *lock, int *id)
+int get_ida(struct ida *ida, struct mutex *lock, int *id)

I don't like making a function as generically named as "get_ida" non-static.  Unless it's part of the IDA code :-)  In any case, I don't think these drivers need their own mutexes, so I sent a replacement set of patches.