diff --git a/arch/arm/src/lpc43xx/lpc43_ssp.c b/arch/arm/src/lpc43xx/lpc43_ssp.c
index 146bf29369..fe97cbc760 100644
--- a/arch/arm/src/lpc43xx/lpc43_ssp.c
+++ b/arch/arm/src/lpc43xx/lpc43_ssp.c
@@ -539,15 +539,15 @@ static void ssp_exchange(FAR struct spi_dev_s *dev, FAR const void *txbuffer,
   FAR struct lpc43_sspdev_s *priv = (FAR struct lpc43_sspdev_s *)dev;
   union
   {
-    FAR uint8_t  *p8;
-    FAR uint16_t *p16;
-    FAR void     *pv;
+    FAR uint8_t    *p8;
+    FAR uint16_t   *p16;
+    FAR const void *pv;
   } tx;
   union
   {
-    FAR uint8_t  *p8;
-    FAR uint16_t *p16;
-    FAR void     *pv;
+    FAR uint8_t    *p8;
+    FAR uint16_t   *p16;
+    FAR const void *pv;
   } rx;
   uint32_t data;
   uint32_t datadummy = (priv->nbits > 8)?0xffff:0xff;
diff --git a/arch/arm/src/lpc43xx/lpc43_tickless_rit.c b/arch/arm/src/lpc43xx/lpc43_tickless_rit.c
index 51f705d33e..d9f91088f3 100644
--- a/arch/arm/src/lpc43xx/lpc43_tickless_rit.c
+++ b/arch/arm/src/lpc43xx/lpc43_tickless_rit.c
@@ -545,7 +545,7 @@ int up_timer_gettime (FAR struct timespec *ts)
     return OK;
   }
 
-# ifdef CONFIG_SCHED_TICKLESS_ALARM
+
 int up_alarm_cancel (FAR struct timespec *ts)
   {
     lpc43_tl_sync_up();
@@ -571,7 +571,7 @@ int up_alarm_start (FAR const struct timespec *ts)
 
     lpc43_tl_init_timer_vars ();
 
-    uint64_t alarm_time = lpc43_tl_ts2tick (ts);
+    alarm_time = lpc43_tl_ts2tick (ts);
     int64_t toSet = alarm_time - base;
     uint32_t curr = lpc43_tl_get_counter ();
 
@@ -607,7 +607,7 @@ int up_alarm_start (FAR const struct timespec *ts)
     return OK;
   }
 
-# else
+#ifndef CONFIG_SCHED_TICKLESS_ALARM
 
 int up_timer_cancel(FAR struct timespec *ts)
   {
@@ -647,10 +647,10 @@ int up_timer_start(FAR const struct timespec *ts)
     struct timespec tmp_ts;
     up_timer_gettime(&tmp_ts);
 
-    tmp_ts->tv_sec += ts->tv_sec;
-    tmp_ts->tv_nsec += ts->tv_nsec;
+    tmp_ts.tv_sec += ts->tv_sec;
+    tmp_ts.tv_nsec += ts->tv_nsec;
 
-    up_alarm_start(tmp_ts);
+    up_alarm_start(&tmp_ts);
 
     lpc43_tl_sync_down();
     return OK;