4 files changed, 22 insertions, 6 deletions
diff --git a/src/class/audio/audio_device.c b/src/class/audio/audio_device.c
index 03cb51efe..6cb05307b 100644
--- a/src/class/audio/audio_device.c
+++ b/src/class/audio/audio_device.c
@@ -685,17 +685,17 @@ void audiod_init(void) {
     switch (i) {
   #if CFG_TUD_AUDIO_FUNC_1_EP_IN_SW_BUF_SZ > 0
       case 0:
-        tu_fifo_config(&audio->ep_in_ff, ep_in_sw_buf.buf_1, CFG_TUD_AUDIO_FUNC_1_EP_IN_SW_BUF_SZ, 1, true);
+        tu_fifo_config(&audio->ep_in_ff, ep_in_sw_buf.buf_1, CFG_TUD_AUDIO_FUNC_1_EP_IN_SW_BUF_SZ, true);
         break;
   #endif
   #if CFG_TUD_AUDIO > 1 && CFG_TUD_AUDIO_FUNC_2_EP_IN_SW_BUF_SZ > 0
       case 1:
-        tu_fifo_config(&audio->ep_in_ff, ep_in_sw_buf.buf_2, CFG_TUD_AUDIO_FUNC_2_EP_IN_SW_BUF_SZ, 1, true);
+        tu_fifo_config(&audio->ep_in_ff, ep_in_sw_buf.buf_2, CFG_TUD_AUDIO_FUNC_2_EP_IN_SW_BUF_SZ, true);
         break;
   #endif
   #if CFG_TUD_AUDIO > 2 && CFG_TUD_AUDIO_FUNC_3_EP_IN_SW_BUF_SZ > 0
       case 2:
-        tu_fifo_config(&audio->ep_in_ff, ep_in_sw_buf.buf_3, CFG_TUD_AUDIO_FUNC_3_EP_IN_SW_BUF_SZ, 1, true);
+        tu_fifo_config(&audio->ep_in_ff, ep_in_sw_buf.buf_3, CFG_TUD_AUDIO_FUNC_3_EP_IN_SW_BUF_SZ, true);
         break;
   #endif
     }
@@ -727,17 +727,17 @@ void audiod_init(void) {
     switch (i) {
   #if CFG_TUD_AUDIO_FUNC_1_EP_OUT_SW_BUF_SZ > 0
       case 0:
-        tu_fifo_config(&audio->ep_out_ff, ep_out_sw_buf.buf_1, CFG_TUD_AUDIO_FUNC_1_EP_OUT_SW_BUF_SZ, 1, true);
+        tu_fifo_config(&audio->ep_out_ff, ep_out_sw_buf.buf_1, CFG_TUD_AUDIO_FUNC_1_EP_OUT_SW_BUF_SZ, true);
         break;
   #endif
   #if CFG_TUD_AUDIO > 1 && CFG_TUD_AUDIO_FUNC_2_EP_OUT_SW_BUF_SZ > 0
       case 1:
-        tu_fifo_config(&audio->ep_out_ff, ep_out_sw_buf.buf_2, CFG_TUD_AUDIO_FUNC_2_EP_OUT_SW_BUF_SZ, 1, true);
+        tu_fifo_config(&audio->ep_out_ff, ep_out_sw_buf.buf_2, CFG_TUD_AUDIO_FUNC_2_EP_OUT_SW_BUF_SZ, true);
         break;
   #endif
   #if CFG_TUD_AUDIO > 2 && CFG_TUD_AUDIO_FUNC_3_EP_OUT_SW_BUF_SZ > 0
       case 2:
-        tu_fifo_config(&audio->ep_out_ff, ep_out_sw_buf.buf_3, CFG_TUD_AUDIO_FUNC_3_EP_OUT_SW_BUF_SZ, 1, true);
+        tu_fifo_config(&audio->ep_out_ff, ep_out_sw_buf.buf_3, CFG_TUD_AUDIO_FUNC_3_EP_OUT_SW_BUF_SZ, true);
         break;
   #endif
     }
diff --git a/src/class/cdc/cdc_host.c b/src/class/cdc/cdc_host.c
index 32f6827b0..f19c4a327 100644
--- a/src/class/cdc/cdc_host.c
+++ b/src/class/cdc/cdc_host.c
@@ -828,7 +828,9 @@ static bool set_line_state_on_enum(cdch_interface_t *p_cdc, tuh_xfer_t *xfer) {
     ENUM_SET_LINE_CONTROL,
     ENUM_SET_LINE_COMPLETE,
   };
+  #ifdef CFG_TUH_CDC_LINE_CODING_ON_ENUM
   const uint8_t idx = get_idx_by_ptr(p_cdc);
+  #endif
   const uintptr_t state = xfer->user_data;
 
   switch (state) {
diff --git a/src/class/vendor/vendor_device.c b/src/class/vendor/vendor_device.c
index 9972911e0..b8e6fec6f 100644
--- a/src/class/vendor/vendor_device.c
+++ b/src/class/vendor/vendor_device.c
@@ -160,6 +160,13 @@ uint32_t tud_vendor_n_write_available(uint8_t idx) {
   vendord_interface_t *p_itf = &_vendord_itf[idx];
   return tu_edpt_stream_write_available(&p_itf->stream.tx);
 }
+
+bool tud_vendor_n_write_clear(uint8_t idx) {
+  TU_VERIFY(idx < CFG_TUD_VENDOR, 0);
+  vendord_interface_t *p_itf = &_vendord_itf[idx];
+  tu_edpt_stream_clear(&p_itf->stream.tx);
+  return true;
+}
 #endif
 
 //--------------------------------------------------------------------+
diff --git a/src/class/vendor/vendor_device.h b/src/class/vendor/vendor_device.h
index d59c885d2..c3de4c49d 100644
--- a/src/class/vendor/vendor_device.h
+++ b/src/class/vendor/vendor_device.h
@@ -91,6 +91,9 @@ uint32_t tud_vendor_n_write_flush(uint8_t idx);
 
 // Return number of bytes available for writing in TX FIFO
 uint32_t tud_vendor_n_write_available(uint8_t idx);
+
+// Clear the transmit FIFO
+bool tud_vendor_n_write_clear(uint8_t idx);
 #endif
 
 // Write a null-terminated string to TX FIFO
@@ -148,6 +151,10 @@ TU_ATTR_ALWAYS_INLINE static inline uint32_t tud_vendor_write_flush(void) {
 TU_ATTR_ALWAYS_INLINE static inline uint32_t tud_vendor_write_available(void) {
   return tud_vendor_n_write_available(0);
 }
+
+TU_ATTR_ALWAYS_INLINE static inline bool tud_vendor_write_clear(void) {
+  return tud_vendor_n_write_clear(0);
+}
 #endif
 
 // backward compatible