Fixes for more cppcheck complaints.

system/hex2bin/hex2bin_main.c

@@ -257,8 +257,7 @@ int hex2bin_main(int argc, char **argv)
                 (enum hex2bin_swap_e)swap);
   if (ret < 0)
     {
-      fprintf(stderr, "ERROR: Failed to convert \"%s\" to binary: %d\n",
+      fprintf(stderr, "ERROR: Failed to convert to binary: %d\n", ret);
-              ret);
     }
 
   /* Clean up and return */

system/hex2bin/hex2mem_main.c

@@ -238,8 +238,7 @@ int hex2mem_main(int argc, char **argv)
                 (enum hex2bin_swap_e)swap);
   if (ret < 0)
     {
-      fprintf(stderr, "ERROR: Failed to convert \"%s\" to binary: %d\n",
+      fprintf(stderr, "ERROR: Failed to convert to binary: %d\n", ret);
-              ret);
     }
 
   /* Clean up and return */

system/install/install.c

@@ -357,9 +357,9 @@ int install_main(int argc, char *argv[])
 
   /* Parse arguments */
 
-  for (i=1; i<argc; i++)
+  for (i = 1; i < argc; i++)
     {
-      if (argv[i][0]=='-' && argv[i][1]=='-' && i<=argc)
+      if (i <= argc && argv[i][0]=='-' && argv[i][1]=='-')
         {
           if (strcmp(argv[i]+2, "stack")==0)
             {

system/mdio/mdio_main.c

@@ -222,8 +222,7 @@ int mdio_main(int argc, char *argv[])
 
       for (i = 0; i < 32; i++)
         {
-          ret = get_phy_reg(phy_id, i, &val_out);
+          (void)get_phy_reg(phy_id, i, &val_out);
-
           printf("phy[%d][%d] = 0x%4x\n", phy_id, i, val_out);
         }
     }

system/nxplayer/nxplayer.c

@@ -993,7 +993,7 @@ err_out:
 
   /* Cleanup */
 
-  while (sem_wait(&pPlayer->sem) != OK)
+  while (sem_wait(&pPlayer->sem) < 0)
     ;
 
 #ifdef CONFIG_AUDIO_DRIVER_SPECIFIC_BUFFERS
@@ -1076,7 +1076,7 @@ int nxplayer_setvolume(FAR struct nxplayer_s *pPlayer, uint16_t volume)
 
   /* Thread sync using the semaphore */
 
-  while (sem_wait(&pPlayer->sem) != OK)
+  while (sem_wait(&pPlayer->sem) < 0)
     ;
 
   /* If we are currently playing, then we need to post a message to
@@ -1162,7 +1162,7 @@ int nxplayer_setbass(FAR struct nxplayer_s *pPlayer, uint8_t level)
 
   /* Thread sync using the semaphore */
 
-  while (sem_wait(&pPlayer->sem) != OK)
+  while (sem_wait(&pPlayer->sem) < 0)
     ;
 
   /* If we are currently playing, then we need to post a message to
@@ -1214,7 +1214,7 @@ int nxplayer_settreble(FAR struct nxplayer_s *pPlayer, uint8_t level)
 
   /* Thread sync using the semaphore */
 
-  while (sem_wait(&pPlayer->sem) != OK)
+  while (sem_wait(&pPlayer->sem) < 0)
     ;
 
   /* If we are currently playing, then we need to post a message to
@@ -1261,7 +1261,7 @@ int nxplayer_setbalance(FAR struct nxplayer_s *pPlayer, uint16_t balance)
 
   /* Thread sync using the semaphore */
 
-  while (sem_wait(&pPlayer->sem) != OK)
+  while (sem_wait(&pPlayer->sem) < 0)
     ;
 
   /* If we are currently playing, then we need to post a message to
@@ -1767,7 +1767,9 @@ int nxplayer_playfile(FAR struct nxplayer_s *pPlayer,
   attr.mq_curmsgs = 0;
   attr.mq_flags   = 0;
 
-  snprintf(pPlayer->mqname, sizeof(pPlayer->mqname), "/tmp/%0X", pPlayer);
+  snprintf(pPlayer->mqname, sizeof(pPlayer->mqname), "/tmp/%0lx",
+           (unsigned long)((uintptr_t)pPlayer));
+
   pPlayer->mq = mq_open(pPlayer->mqname, O_RDWR | O_CREAT, 0644, &attr);
   if (pPlayer->mq == NULL)
     {
@@ -1929,12 +1931,12 @@ FAR struct nxplayer_s *nxplayer_create(void)
 
 void nxplayer_release(FAR struct nxplayer_s* pPlayer)
 {
-  int         refcount, ret;
+  int         refcount;
   FAR void*   value;
 
   /* Grab the semaphore */
 
-  while ((ret = sem_wait(&pPlayer->sem)) != OK)
+  while (sem_wait(&pPlayer->sem) < 0)
     {
       int errcode = errno;
       DEBUGASSERT(errcode > 0);
@@ -1954,7 +1956,7 @@ void nxplayer_release(FAR struct nxplayer_s* pPlayer)
       pthread_join(pPlayer->playId, &value);
       pPlayer->playId = 0;
 
-      while ((ret = sem_wait(&pPlayer->sem)) != OK)
+      while (sem_wait(&pPlayer->sem) < 0)
         {
           int errcode = errno;
           DEBUGASSERT(errcode > 0);
@@ -1975,7 +1977,9 @@ void nxplayer_release(FAR struct nxplayer_s* pPlayer)
   /* If the ref count *was* one, then free the context */
 
   if (refcount == 1)
-    free(pPlayer);
+    {
+      free(pPlayer);
+    }
 }
 
 /****************************************************************************
@@ -1992,11 +1996,9 @@ void nxplayer_release(FAR struct nxplayer_s* pPlayer)
 
 void nxplayer_reference(FAR struct nxplayer_s* pPlayer)
 {
-  int     ret;
-
   /* Grab the semaphore */
 
-  while ((ret = sem_wait(&pPlayer->sem)) != OK)
+  while (sem_wait(&pPlayer->sem) < 0)
     {
       int errcode = errno;
       DEBUGASSERT(errcode > 0);
@@ -2031,11 +2033,9 @@ void nxplayer_reference(FAR struct nxplayer_s* pPlayer)
 void nxplayer_detach(FAR struct nxplayer_s* pPlayer)
 {
 #if 0
-  int     ret;
-
   /* Grab the semaphore */
 
-  while ((ret = sem_wait(&pPlayer->sem)) != OK)
+  while (sem_wait(&pPlayer->sem) < 0)
     {
       int errcode = errno;
       DEBUGASSERT(errcode > 0);

system/stackmonitor/stackmonitor.c

@@ -101,7 +101,7 @@ static void stkmon_task(FAR struct tcb_s *tcb, FAR void *arg)
   syslog(LOG_INFO, "%5d %6d %6d %s\n",
          tcb->pid, tcb->adj_stack_size, up_check_tcbstack(tcb), tcb->name);
 #else
-  syslog(LOG_INFO, ("%5d %6d %6d\n",
+  syslog(LOG_INFO, "%5d %6d %6d\n",
          tcb->pid, tcb->adj_stack_size, up_check_tcbstack(tcb));
 #endif
 }

system/vi/vi.c

@@ -3636,7 +3636,7 @@ int vi_main(int argc, char **argv)
                 }
               else
                 {
-                  fprintf(stderr, "ERROR: Column value out of range: %ld\n",
+                  fprintf(stderr, "ERROR: Column value out of range: %lu\n",
                           value);
                   vi_showusage(vi, argv[0], EXIT_FAILURE);
                 }
@@ -3652,7 +3652,7 @@ int vi_main(int argc, char **argv)
                 }
               else
                 {
-                  fprintf(stderr, "ERROR: Row value out of range: %ld\n",
+                  fprintf(stderr, "ERROR: Row value out of range: %lu\n",
                           value);
                   vi_showusage(vi, argv[0], EXIT_FAILURE);
                 }

system/zmodem/zm_receive.c

@@ -670,7 +670,7 @@ static int zmr_filename(FAR struct zm_state_s *pzm)
   bremaining = 0;
   filetype   = 0;
 
-  sscanf((FAR char *)pktptr, "%ld %lo %o %o %d %ld %d",
+  sscanf((FAR char *)pktptr, "%lu %lo %o %o %d %lu %d",
          &filesize, &timestamp, &mode, &serialno, &fremaining, &bremaining,
          &filetype);