diff --git a/include/linux/hmm.h b/include/linux/hmm.h
index ddf9f7144c43..c102e359b59d 100644
--- a/include/linux/hmm.h
+++ b/include/linux/hmm.h
@@ -225,17 +225,10 @@ static inline uint64_t hmm_device_entry_from_pfn(const struct hmm_range *range,
 /* Don't fault in missing PTEs, just snapshot the current state. */
 #define HMM_FAULT_SNAPSHOT		(1 << 1)
 
-#ifdef CONFIG_HMM_MIRROR
 /*
  * Please see Documentation/vm/hmm.rst for how to use the range API.
  */
 long hmm_range_fault(struct hmm_range *range, unsigned int flags);
-#else
-static inline long hmm_range_fault(struct hmm_range *range, unsigned int flags)
-{
-	return -EOPNOTSUPP;
-}
-#endif
 
 /*
  * HMM_RANGE_DEFAULT_TIMEOUT - default timeout (ms) when waiting for a range