3 files changed, 10 insertions, 6 deletions
diff --git a/src/class/audio/audio_device.c b/src/class/audio/audio_device.c
index 1dda8af99..77ef54222 100644
--- a/src/class/audio/audio_device.c
+++ b/src/class/audio/audio_device.c
@@ -485,7 +485,8 @@ uint16_t tud_audio_n_read(uint8_t func_id, void *buffer, uint16_t bufsize) {
 
 bool tud_audio_n_clear_ep_out_ff(uint8_t func_id) {
   TU_VERIFY(func_id < CFG_TUD_AUDIO && _audiod_fct[func_id].p_desc != NULL);
-  return tu_fifo_clear(&_audiod_fct[func_id].ep_out_ff);
+  tu_fifo_clear(&_audiod_fct[func_id].ep_out_ff);
+  return true;
 }
 
 tu_fifo_t *tud_audio_n_get_ep_out_ff(uint8_t func_id) {
@@ -536,7 +537,8 @@ uint16_t tud_audio_n_write(uint8_t func_id, const void *data, uint16_t len) {
 
 bool tud_audio_n_clear_ep_in_ff(uint8_t func_id) {
   TU_VERIFY(func_id < CFG_TUD_AUDIO && _audiod_fct[func_id].p_desc != NULL);
-  return tu_fifo_clear(&_audiod_fct[func_id].ep_in_ff);
+  tu_fifo_clear(&_audiod_fct[func_id].ep_in_ff);
+  return true;
 }
 
 tu_fifo_t *tud_audio_n_get_ep_in_ff(uint8_t func_id) {
diff --git a/src/class/cdc/cdc_device.c b/src/class/cdc/cdc_device.c
index d7792afe4..a446782e3 100644
--- a/src/class/cdc/cdc_device.c
+++ b/src/class/cdc/cdc_device.c
@@ -244,7 +244,8 @@ uint32_t tud_cdc_n_write_available(uint8_t itf) {
 bool tud_cdc_n_write_clear(uint8_t itf) {
   TU_VERIFY(itf < CFG_TUD_CDC);
   cdcd_interface_t *p_cdc = &_cdcd_itf[itf];
-  return tu_edpt_stream_clear(&p_cdc->stream.tx);
+  tu_edpt_stream_clear(&p_cdc->stream.tx);
+  return true;
 }
 
 //--------------------------------------------------------------------+
diff --git a/src/class/cdc/cdc_host.c b/src/class/cdc/cdc_host.c
index 35717ddf6..e069d9f71 100644
--- a/src/class/cdc/cdc_host.c
+++ b/src/class/cdc/cdc_host.c
@@ -482,7 +482,8 @@ uint32_t tuh_cdc_write_flush(uint8_t idx) {
 bool tuh_cdc_write_clear(uint8_t idx) {
   cdch_interface_t * p_cdc = get_itf(idx);
   TU_VERIFY(p_cdc);
-  return tu_edpt_stream_clear(&p_cdc->stream.tx);
+  tu_edpt_stream_clear(&p_cdc->stream.tx);
+  return true;
 }
 
 uint32_t tuh_cdc_write_available(uint8_t idx) {
@@ -517,9 +518,9 @@ bool tuh_cdc_read_clear (uint8_t idx) {
   cdch_interface_t * p_cdc = get_itf(idx);
   TU_VERIFY(p_cdc);
 
-  bool ret = tu_edpt_stream_clear(&p_cdc->stream.rx);
+  tu_edpt_stream_clear(&p_cdc->stream.rx);
   (void)tu_edpt_stream_read_xfer(p_cdc->daddr, &p_cdc->stream.rx);
-  return ret;
+  return true;
 }
 
 //--------------------------------------------------------------------+