diff --git a/services/audioflinger/AudioPolicyService.cpp b/services/audioflinger/AudioPolicyService.cpp
index 415f696..6a115ff 100644
--- a/services/audioflinger/AudioPolicyService.cpp
+++ b/services/audioflinger/AudioPolicyService.cpp
@@ -613,7 +613,7 @@
     return NO_ERROR;
 }
 
-status_t AudioPolicyService::dump(int fd, const Vector<String16>& args)
+status_t AudioPolicyService::dump(int fd, const Vector<String16>& args __unused)
 {
     if (!dumpAllowed()) {
         dumpPermissionDenial(fd);
@@ -1461,7 +1461,7 @@
 extern "C" {
 
 
-static audio_module_handle_t aps_load_hw_module(void *service,
+static audio_module_handle_t aps_load_hw_module(void *service __unused,
                                              const char *name)
 {
     sp<IAudioFlinger> af = AudioSystem::get_audio_flinger();
@@ -1474,7 +1474,7 @@
 }
 
 // deprecated: replaced by aps_open_output_on_module()
-static audio_io_handle_t aps_open_output(void *service,
+static audio_io_handle_t aps_open_output(void *service __unused,
                                          audio_devices_t *pDevices,
                                          uint32_t *pSamplingRate,
                                          audio_format_t *pFormat,
@@ -1492,7 +1492,7 @@
                           pLatencyMs, flags);
 }
 
-static audio_io_handle_t aps_open_output_on_module(void *service,
+static audio_io_handle_t aps_open_output_on_module(void *service __unused,
                                                    audio_module_handle_t module,
                                                    audio_devices_t *pDevices,
                                                    uint32_t *pSamplingRate,
@@ -1511,7 +1511,7 @@
                           pLatencyMs, flags, offloadInfo);
 }
 
-static audio_io_handle_t aps_open_dup_output(void *service,
+static audio_io_handle_t aps_open_dup_output(void *service __unused,
                                                  audio_io_handle_t output1,
                                                  audio_io_handle_t output2)
 {
@@ -1523,7 +1523,7 @@
     return af->openDuplicateOutput(output1, output2);
 }
 
-static int aps_close_output(void *service, audio_io_handle_t output)
+static int aps_close_output(void *service __unused, audio_io_handle_t output)
 {
     sp<IAudioFlinger> af = AudioSystem::get_audio_flinger();
     if (af == 0) {
@@ -1533,7 +1533,7 @@
     return af->closeOutput(output);
 }
 
-static int aps_suspend_output(void *service, audio_io_handle_t output)
+static int aps_suspend_output(void *service __unused, audio_io_handle_t output)
 {
     sp<IAudioFlinger> af = AudioSystem::get_audio_flinger();
     if (af == 0) {
@@ -1544,7 +1544,7 @@
     return af->suspendOutput(output);
 }
 
-static int aps_restore_output(void *service, audio_io_handle_t output)
+static int aps_restore_output(void *service __unused, audio_io_handle_t output)
 {
     sp<IAudioFlinger> af = AudioSystem::get_audio_flinger();
     if (af == 0) {
@@ -1556,12 +1556,12 @@
 }
 
 // deprecated: replaced by aps_open_input_on_module(), and acoustics parameter is ignored
-static audio_io_handle_t aps_open_input(void *service,
+static audio_io_handle_t aps_open_input(void *service __unused,
                                         audio_devices_t *pDevices,
                                         uint32_t *pSamplingRate,
                                         audio_format_t *pFormat,
                                         audio_channel_mask_t *pChannelMask,
-                                        audio_in_acoustics_t acoustics)
+                                        audio_in_acoustics_t acoustics __unused)
 {
     sp<IAudioFlinger> af = AudioSystem::get_audio_flinger();
     if (af == 0) {
@@ -1572,7 +1572,7 @@
     return af->openInput((audio_module_handle_t)0, pDevices, pSamplingRate, pFormat, pChannelMask);
 }
 
-static audio_io_handle_t aps_open_input_on_module(void *service,
+static audio_io_handle_t aps_open_input_on_module(void *service __unused,
                                                   audio_module_handle_t module,
                                                   audio_devices_t *pDevices,
                                                   uint32_t *pSamplingRate,
@@ -1588,7 +1588,7 @@
     return af->openInput(module, pDevices, pSamplingRate, pFormat, pChannelMask);
 }
 
-static int aps_close_input(void *service, audio_io_handle_t input)
+static int aps_close_input(void *service __unused, audio_io_handle_t input)
 {
     sp<IAudioFlinger> af = AudioSystem::get_audio_flinger();
     if (af == 0) {
@@ -1598,7 +1598,7 @@
     return af->closeInput(input);
 }
 
-static int aps_set_stream_output(void *service, audio_stream_type_t stream,
+static int aps_set_stream_output(void *service __unused, audio_stream_type_t stream,
                                      audio_io_handle_t output)
 {
     sp<IAudioFlinger> af = AudioSystem::get_audio_flinger();
@@ -1609,7 +1609,7 @@
     return af->setStreamOutput(stream, output);
 }
 
-static int aps_move_effects(void *service, int session,
+static int aps_move_effects(void *service __unused, int session,
                                 audio_io_handle_t src_output,
                                 audio_io_handle_t dst_output)
 {
@@ -1621,7 +1621,7 @@
     return af->moveEffects(session, src_output, dst_output);
 }
 
-static char * aps_get_parameters(void *service, audio_io_handle_t io_handle,
+static char * aps_get_parameters(void *service __unused, audio_io_handle_t io_handle,
                                      const char *keys)
 {
     String8 result = AudioSystem::getParameters(io_handle, String8(keys));