Document intentional fallthroughs + fix harmless unintended ones

Change-Id: I1ca5b1027ec30cbf61093bab35b980196ed14e6b

2 files changed, 4 insertions, 0 deletions

diff --git a/lib/rbcodec/codecs/liba52/downmix.c b/lib/rbcodec/codecs/liba52/downmix.c
index dd2867cb92..277b04d4c8 100644
--- a/lib/rbcodec/codecs/liba52/downmix.c
+++ b/lib/rbcodec/codecs/liba52/downmix.c
@@ -498,6 +498,7 @@ void a52_downmix (sample_t * samples, int acmod, int output,
     case CONVERT (A52_2F1R, A52_MONO):
         if (slev == 0)
             goto mix_2to1;
+        /* fallthrough */
     case CONVERT (A52_3F, A52_MONO):
     mix_3to1:
         mix3to1 (samples);
@@ -506,9 +507,11 @@ void a52_downmix (sample_t * samples, int acmod, int output,
     case CONVERT (A52_3F1R, A52_MONO):
         if (slev == 0)
             goto mix_3to1;
+        /* fallthrough */
     case CONVERT (A52_2F2R, A52_MONO):
         if (slev == 0)
             goto mix_2to1;
+        /* fallthrough */
         mix4to1 (samples);
         break;
 
diff --git a/lib/rbcodec/dsp/crossfeed.c b/lib/rbcodec/dsp/crossfeed.c
index 60f38b243c..9cca7d8973 100644
--- a/lib/rbcodec/dsp/crossfeed.c
+++ b/lib/rbcodec/dsp/crossfeed.c
@@ -334,6 +334,7 @@ static intptr_t crossfeed_configure(struct dsp_proc_entry *this,
     case DSP_PROC_INIT:
         if (value == 0)
             this->data = (intptr_t)&crossfeed_state;
+        /* Fallthrough */
 
     case DSP_SET_OUT_FREQUENCY:
         update_process_fn(this, dsp);