audio/audio_template: use g_malloc0() to replace audio_calloc()

Use g_malloc0() as a direct replacement for audio_calloc().

Since the type of the parameter n_bytes of the function g_malloc0()
is unsigned, the type of the variables voice_size_out and
voice_size_in has been changed to size_t. This means that the
function argument no longer has to be checked for negative values.

Signed-off-by: Volker Rümelin <vr_qemu@t-online.de>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20230121094735.11644-7-vr_qemu@t-online.de>

2 files changed, 10 insertions, 12 deletions

diff --git a/audio/audio_int.h b/audio/audio_int.h
index 4632cdf..ce2d6bf 100644
--- a/audio/audio_int.h
+++ b/audio/audio_int.h
@@ -151,8 +151,8 @@ struct audio_driver {
     int can_be_default;
     int max_voices_out;
     int max_voices_in;
-    int voice_size_out;
-    int voice_size_in;
+    size_t voice_size_out;
+    size_t voice_size_in;
     QLIST_ENTRY(audio_driver) next;
 };
 
diff --git a/audio/audio_template.h b/audio/audio_template.h
index dfa440f..592866f 100644
--- a/audio/audio_template.h
+++ b/audio/audio_template.h
@@ -40,7 +40,7 @@ static void glue(audio_init_nb_voices_, TYPE)(AudioState *s,
                                               struct audio_driver *drv)
 {
     int max_voices = glue (drv->max_voices_, TYPE);
-    int voice_size = glue (drv->voice_size_, TYPE);
+    size_t voice_size = glue(drv->voice_size_, TYPE);
 
     if (glue (s->nb_hw_voices_, TYPE) > max_voices) {
         if (!max_voices) {
@@ -63,8 +63,8 @@ static void glue(audio_init_nb_voices_, TYPE)(AudioState *s,
     }
 
     if (audio_bug(__func__, voice_size && !max_voices)) {
-        dolog ("drv=`%s' voice_size=%d max_voices=0\n",
-               drv->name, voice_size);
+        dolog("drv=`%s' voice_size=%zu max_voices=0\n",
+              drv->name, voice_size);
     }
 }
 
@@ -273,13 +273,11 @@ static HW *glue(audio_pcm_hw_add_new_, TYPE)(AudioState *s,
         return NULL;
     }
 
-    hw = audio_calloc(__func__, 1, glue(drv->voice_size_, TYPE));
-    if (!hw) {
-        dolog ("Can not allocate voice `%s' size %d\n",
-               drv->name, glue (drv->voice_size_, TYPE));
-        return NULL;
-    }
-
+    /*
+     * Since glue(s->nb_hw_voices_, TYPE) is != 0, glue(drv->voice_size_, TYPE)
+     * is guaranteed to be != 0. See the audio_init_nb_voices_* functions.
+     */
+    hw = g_malloc0(glue(drv->voice_size_, TYPE));
     hw->s = s;
     hw->pcm_ops = drv->pcm_ops;