avail = snd_pcm_capture_avail(runtime);
        }
        if (avail < runtime->control->avail_min) {
-               snd_pcm_sframes_t n = runtime->control->avail_min - avail;
-               if (n > 0 && frames > (snd_pcm_uframes_t)n)
-                       frames = n;
+               snd_pcm_sframes_t to_avail_min =
+                       runtime->control->avail_min - avail;
+               if (to_avail_min > 0 &&
+                   frames > (snd_pcm_uframes_t)to_avail_min)
+                       frames = to_avail_min;
        }
        if (avail < runtime->buffer_size) {
-               snd_pcm_sframes_t n = runtime->buffer_size - avail;
-               if (n > 0 && frames > (snd_pcm_uframes_t)n)
-                       frames = n;
+               snd_pcm_sframes_t to_buffer_size =
+                       runtime->buffer_size - avail;
+               if (to_buffer_size > 0 &&
+                   frames > (snd_pcm_uframes_t)to_buffer_size)
+                       frames = to_buffer_size;
        }
        if (frames == ULONG_MAX) {
                snd_pcm_tick_set(substream, 0);