Fix misc. compilation error/warning detected by tools/testbuild.sh

arch/arm/src/c5471/c5471_ethernet.c

@@ -1349,7 +1349,7 @@ static void c5471_receive(struct c5471_driver_s *c5471)
       else
 #endif
 #ifdef CONFIG_NET_ARP
-      else if (BUF->type == HTONS(ETHTYPE_ARP))
+      if (BUF->type == HTONS(ETHTYPE_ARP))
         {
           arp_arpin(dev);
 

arch/arm/src/calypso/calypso_timer.c

@@ -116,19 +116,22 @@ uint16_t hwtimer_read(int num)
 #define BASE_ADDR_WDOG		0xfffff800
 #define WDOG_REG(m)		(BASE_ADDR_WDOG + m)
 
-enum wdog_reg {
+enum wdog_reg
+{
   WD_CNTL_TIMER	= CNTL_TIMER,
   WD_LOAD_TIMER	= LOAD_TIMER,
   WD_READ_TIMER	= 0x02,
   WD_MODE		= 0x04,
 };
 
-enum wdog_ctl {
+enum wdog_ctl
+{
   WD_CTL_START = (1 << 7),
   WD_CTL_AUTO_RELOAD = (1 << 8)
 };
 
-enum wdog_mode {
+enum wdog_mode
+{
   WD_MODE_DIS_ARM = 0xF5,
   WD_MODE_DIS_CONFIRM = 0xA0,
   WD_MODE_ENABLE = (1 << 15)

drivers/net/enc28j60.c

@@ -1929,6 +1929,7 @@ static void enc_toworker(FAR void *arg)
   DEBUGASSERT(ret == OK);
   ret = enc_ifup(&priv->dev);
   DEBUGASSERT(ret == OK);
+  UNUSED(ret);
 
   /* Then poll uIP for new XMIT data */
 
@@ -1977,6 +1978,7 @@ static void enc_txtimeout(int argc, uint32_t arg, ...)
 
   ret = work_queue(HPWORK, &priv->towork, enc_toworker, (FAR void *)priv, 0);
   DEBUGASSERT(ret == OK);
+  UNUSED(ret);
 }
 
 /****************************************************************************
@@ -2071,6 +2073,7 @@ static void enc_polltimer(int argc, uint32_t arg, ...)
 
   ret = work_queue(HPWORK, &priv->pollwork, enc_pollworker, (FAR void *)priv, 0);
   DEBUGASSERT(ret == OK);
+  UNUSED(ret);
 }
 
 /****************************************************************************

include/nuttx/nx/nxmu.h

@@ -49,6 +49,8 @@
 
 #include <nuttx/nx/nx.h>
 
+#ifdef CONFIG_NX_MULTIUSER
+
 /****************************************************************************
  * Pre-processor Definitions
  ****************************************************************************/
@@ -565,4 +567,5 @@ int nxmu_sendwindow(FAR struct nxbe_window_s *wnd, FAR const void *msg,
 }
 #endif
 
+#endif  /* CONFIG_NX_MULTIUSER */
 #endif  /* __INCLUDE_NUTTX_NX_NXMU_H */

net/iob/iob_alloc.c

@@ -88,7 +88,7 @@ static FAR struct iob_s *iob_allocwait(bool throttled)
   FAR struct iob_s *iob;
   irqstate_t flags;
   FAR sem_t *sem;
-  int ret;
+  int ret = OK;
 
 #if CONFIG_IOB_THROTTLE > 0
   /* Select the semaphore count to check. */

net/iob/iob_alloc_qentry.c

@@ -90,7 +90,7 @@ static FAR struct iob_qentry_s *iob_allocwait_qentry(void)
 {
   FAR struct iob_qentry_s *qentry;
   irqstate_t flags;
-  int ret;
+  int ret = OK;
 
   /* The following must be atomic; interrupt must be disabled so that there
    * is no conflict with interrupt level I/O buffer chain container