-u32 dsp_start_jiffies; /* jiffies at the time, the calculation begins */
-struct timeval dsp_start_tv; /* time at start of calculation */
+#ifdef UNUSED
+static u32 dsp_start_jiffies; /* jiffies at the time, the calculation begins */
+#endif /* UNUSED */
+static struct timeval dsp_start_tv; /* time at start of calculation */