diff --git a/audio/4.0/IDevice.hal b/audio/4.0/IDevice.hal
index 2f121c1e81..4bc2d4db0c 100644
--- a/audio/4.0/IDevice.hal
+++ b/audio/4.0/IDevice.hal
@@ -254,16 +254,4 @@ interface IDevice {
      */
     setParameters(vec<ParameterValue> context, vec<ParameterValue> parameters)
             generates (Result retval);
-
-    /**
-     * Dumps information about the device into the provided file descriptor.
-     * This is used for the dumpsys facility.
-     * The implementation should not block as the caller might have time
-     * constraint on the dump.
-     * A back to back dump of all HAL Device and Stream should take under 100ms.
-     *
-     * @param fd dump file descriptor.
-     * @return retval operation completion status: OK or NOT_SUPPORTED.
-     */
-    debugDump(handle fd) generates (Result retval);
 };
diff --git a/audio/4.0/IStream.hal b/audio/4.0/IStream.hal
index 306152b372..34e7a140c8 100644
--- a/audio/4.0/IStream.hal
+++ b/audio/4.0/IStream.hal
@@ -258,18 +258,6 @@ interface IStream {
     setParameters(vec<ParameterValue> context, vec<ParameterValue> parameters)
             generates (Result retval);
 
-    /**
-     * Dumps information about the stream into the provided file descriptor.
-     * This is used for the dumpsys facility.
-     * The implementation should not block as the caller might have time
-     * constraint on the dump.
-     * A back to back dump of all HAL Device and Stream should take under 100ms.
-     *
-     * @param fd dump file descriptor.
-     * @return retval operation completion status: OK or NOT_SUPPORTED.
-     */
-    debugDump(handle fd) generates (Result retval);
-
     /**
      * Called by the framework to start a stream operating in mmap mode.
      * createMmapBuffer() must be called before calling start().
diff --git a/audio/common/4.0/types.hal b/audio/common/4.0/types.hal
index 5212dcd2d3..e9e7173665 100644
--- a/audio/common/4.0/types.hal
+++ b/audio/common/4.0/types.hal
@@ -493,8 +493,6 @@ enum AudioInterleave : int32_t {
  */
 @export(name="audio_mode_t", value_prefix="AUDIO_MODE_")
 enum AudioMode : int32_t {
-    INVALID          = -2,
-    CURRENT          = -1,
     NORMAL           = 0,
     RINGTONE         = 1,
     IN_CALL          = 2,
diff --git a/audio/effect/4.0/IEffectsFactory.hal b/audio/effect/4.0/IEffectsFactory.hal
index 84efb74ded..034af584af 100644
--- a/audio/effect/4.0/IEffectsFactory.hal
+++ b/audio/effect/4.0/IEffectsFactory.hal
@@ -55,16 +55,4 @@ interface IEffectsFactory {
      */
     createEffect(Uuid uid, AudioSession session, AudioIoHandle ioHandle)
         generates (Result retval, IEffect result, uint64_t effectId);
-
-    /**
-     * Dumps information about effects into the provided file descriptor.
-     * This is used for the dumpsys facility.
-     * The implementation should not block as the caller might have time
-     * constraint on the dump.
-     * A back to back dump of all HAL Device and Stream should take under 100ms.
-     *
-     * @param fd dump file descriptor.
-     * @return retval operation completion status: OK or NOT_SUPPORTED.
-     */
-    debugDump(handle fd) generates (Result retval);
 };