common/misc: sparse fixes

command.c:44:38: error: bad constant expression
dlmalloc.c:1468:2: warning: Using plain integer as NULL pointer
dlmalloc.c:1468:5: warning: Using plain integer as NULL pointer
dlmalloc.c:2176:12: warning: Using plain integer as NULL pointer
dlmalloc.c:2179:31: warning: Using plain integer as NULL pointer
dlmalloc.c:2382:14: warning: Using plain integer as NULL pointer
dlmalloc.c:2436:14: warning: Using plain integer as NULL pointer
dlmalloc.c:2582:31: warning: Using plain integer as NULL pointer
dlmalloc.c:2585:17: warning: Using plain integer as NULL pointer
dlmalloc.c:2646:14: warning: Using plain integer as NULL pointer
dlmalloc.c:2659:19: warning: Using plain integer as NULL pointer
dlmalloc.c:2692:19: warning: Using plain integer as NULL pointer
dlmalloc.c:2707:19: warning: Using plain integer as NULL pointer
dlmalloc.c:2708:14: warning: Using plain integer as NULL pointer
dlmalloc.c:2786:31: warning: Using plain integer as NULL pointer
dlmalloc.c:2801:12: warning: Using plain integer as NULL pointer
dlmalloc.c:2801:22: warning: Using plain integer as NULL pointer
dlmalloc.c:2926:27: warning: Using plain integer as NULL pointer
dlmalloc.c:2928:14: warning: Using plain integer as NULL pointer
dlmalloc.c:2929:12: warning: Using plain integer as NULL pointer
dlmalloc.c:3075:14: warning: Using plain integer as NULL pointer
hush.c:292:14: warning: symbol 'last_return_code' was not declared. Should it be static?
hush.c:293:5: warning: symbol 'nesting_level' was not declared. Should it be static?
hush.c:2175:20: warning: Using plain integer as NULL pointer
hush.c:2175:34: warning: Using plain integer as NULL pointer
hush.c:2210:41: warning: Using plain integer as NULL pointer
hush.c:2216:45: warning: Using plain integer as NULL pointer
hush.c:2249:25: warning: Using plain integer as NULL pointer
hush.c:2332:13: warning: symbol 'new_pipe' was not declared. Should it be static?
hush.c:2390:5: warning: symbol 'reserved_word' was not declared. Should it be static?
hush.c:2927:5: warning: symbol 'parse_stream' was not declared. Should it be static?
hush.c:3127:6: warning: symbol 'mapset' was not declared. Should it be static?
hush.c:3133:6: warning: symbol 'update_ifs_map' was not declared. Should it be static?
hush.c:3161:5: warning: symbol 'parse_stream_outer' was not declared. Should it be static?
hush.c:3295:34: warning: Using plain integer as NULL pointer
hush.c:3631:5: warning: symbol 'do_showvar' was not declared. Should it be static
image.c:1282:29: warning: Using plain integer as NULL pointer
image.c:1315:41: warning: Using plain integer as NULL pointer
image.c:1330:25: warning: Using plain integer as NULL pointer
image.c:1706:25: warning: Using plain integer as NULL pointer
main.c:510:10: warning: symbol 'hist_num' was not declared. Should it be static?
main.c:512:5: warning: symbol 'hist_list' was not declared. Should it be static?
main.c:513:6: warning: symbol 'hist_lines' was not declared. Should it be static?
usb_storage.c:195:6: warning: symbol 'usb_show_progress' was not declared. Should it be static?
usb_storage.c:440:48: warning: Using plain integer as NULL pointer
usb_storage.c:503:5: warning: symbol 'usb_stor_BBB_comdat' was not declared. Should it be static?
usb_storage.c:551:5: warning: symbol 'usb_stor_CB_comdat' was not declared. Should it be static?
usb_storage.c:629:55: warning: Using plain integer as NULL pointer
usb_storage.c:620:5: warning: symbol 'usb_stor_CBI_get_status' was not declared. Should it be static?
usb_storage.c:675:43: warning: Using plain integer as NULL pointer
usb_storage.c:668:5: warning: symbol 'usb_stor_BBB_clear_endpt_stall' was not declared. Should it be static?
usb_storage.c:679:5: warning: symbol 'usb_stor_BBB_transport' was not declared. Should it be static?
usb_storage.c:801:5: warning: symbol 'usb_stor_CB_transport' was not declared. Sh
xyzModem.c:104:1: warning: symbol 'CYGACC_COMM_IF_GETC_TIMEOUT' was not declared. Should it be static?
xyzModem.c:122:1: warning: symbol 'CYGACC_COMM_IF_PUTC' was not declared. Should it be static?
xyzModem.c:169:1: warning: symbol 'parse_num' was not declared. Should it be stat

note: hush.c's nesting_level deleted because not used.

Signed-off-by: Kim Phillips <kim.phillips@freescale.com>

7 files changed, 64 insertions, 56 deletions

diff --git a/common/command.c b/common/command.c
index 50c8429..f51df26 100644
--- a/common/command.c
+++ b/common/command.c
@@ -40,8 +40,15 @@ int _do_help (cmd_tbl_t *cmd_start, int cmd_items, cmd_tbl_t * cmdtp, int
 	int i;
 	int rcode = 0;
 
+	if (cmd_items > CONFIG_SYS_MAXARGS) {
+		printf("%s: cmd_items %d exceeds hardcoded limit %d."
+		       " Recompile with higher CONFIG_SYS_MAXARGS?\n",
+		       __func__, cmd_items, CONFIG_SYS_MAXARGS);
+		return -1;
+	}
+
 	if (argc == 1) {	/*show list of commands */
-		cmd_tbl_t *cmd_array[cmd_items];
+		cmd_tbl_t *cmd_array[CONFIG_SYS_MAXARGS];
 		int i, j, swaps;
 
 		/* Make array of commands from .uboot_cmd section */
diff --git a/common/dlmalloc.c b/common/dlmalloc.c
index 1d7e527..b2f0a1a 100644
--- a/common/dlmalloc.c
+++ b/common/dlmalloc.c
@@ -1465,7 +1465,7 @@ typedef struct malloc_chunk* mbinptr;
 #define IAV(i)  bin_at(i), bin_at(i)
 
 static mbinptr av_[NAV * 2 + 2] = {
- 0, 0,
+ NULL, NULL,
  IAV(0),   IAV(1),   IAV(2),   IAV(3),   IAV(4),   IAV(5),   IAV(6),   IAV(7),
  IAV(8),   IAV(9),   IAV(10),  IAV(11),  IAV(12),  IAV(13),  IAV(14),  IAV(15),
  IAV(16),  IAV(17),  IAV(18),  IAV(19),  IAV(20),  IAV(21),  IAV(22),  IAV(23),
@@ -2173,10 +2173,10 @@ Void_t* mALLOc(bytes) size_t bytes;
   /* check if mem_malloc_init() was run */
   if ((mem_malloc_start == 0) && (mem_malloc_end == 0)) {
     /* not initialized yet */
-    return 0;
+    return NULL;
   }
 
-  if ((long)bytes < 0) return 0;
+  if ((long)bytes < 0) return NULL;
 
   nb = request2size(bytes);  /* padded request size; */
 
@@ -2379,7 +2379,7 @@ Void_t* mALLOc(bytes) size_t bytes;
     /* Try to extend */
     malloc_extend_top(nb);
     if ( (remainder_size = chunksize(top) - nb) < (long)MINSIZE)
-      return 0; /* propagate failure */
+      return NULL; /* propagate failure */
   }
 
   victim = top;
@@ -2433,7 +2433,7 @@ void fREe(mem) Void_t* mem;
   mchunkptr fwd;       /* misc temp for linking */
   int       islr;      /* track whether merging with last_remainder */
 
-  if (mem == 0)                              /* free(0) has no effect */
+  if (mem == NULL)                              /* free(0) has no effect */
     return;
 
   p = mem2chunk(mem);
@@ -2579,10 +2579,10 @@ Void_t* rEALLOc(oldmem, bytes) Void_t* oldmem; size_t bytes;
   if (bytes == 0) { fREe(oldmem); return 0; }
 #endif
 
-  if ((long)bytes < 0) return 0;
+  if ((long)bytes < 0) return NULL;
 
   /* realloc of null is supposed to be same as malloc */
-  if (oldmem == 0) return mALLOc(bytes);
+  if (oldmem == NULL) return mALLOc(bytes);
 
   newp    = oldp    = mem2chunk(oldmem);
   newsize = oldsize = chunksize(oldp);
@@ -2643,7 +2643,7 @@ Void_t* rEALLOc(oldmem, bytes) Void_t* oldmem; size_t bytes;
     }
     else
     {
-      next = 0;
+      next = NULL;
       nextsize = 0;
     }
 
@@ -2656,7 +2656,7 @@ Void_t* rEALLOc(oldmem, bytes) Void_t* oldmem; size_t bytes;
 
       /* try forward + backward first to save a later consolidation */
 
-      if (next != 0)
+      if (next != NULL)
       {
 	/* into top */
 	if (next == top)
@@ -2689,7 +2689,7 @@ Void_t* rEALLOc(oldmem, bytes) Void_t* oldmem; size_t bytes;
       }
 
       /* backward only */
-      if (prev != 0 && (long)(prevsize + newsize) >= (long)nb)
+      if (prev != NULL && (long)(prevsize + newsize) >= (long)nb)
       {
 	unlink(prev, bck, fwd);
 	newp = prev;
@@ -2704,8 +2704,8 @@ Void_t* rEALLOc(oldmem, bytes) Void_t* oldmem; size_t bytes;
 
     newmem = mALLOc (bytes);
 
-    if (newmem == 0)  /* propagate failure */
-      return 0;
+    if (newmem == NULL)  /* propagate failure */
+      return NULL;
 
     /* Avoid copy if newp is next chunk after oldp. */
     /* (This can only happen when new chunk is sbrk'ed.) */
@@ -2783,7 +2783,7 @@ Void_t* mEMALIGn(alignment, bytes) size_t alignment; size_t bytes;
   mchunkptr remainder;        /* spare room at end to split off */
   long      remainder_size;   /* its size */
 
-  if ((long)bytes < 0) return 0;
+  if ((long)bytes < 0) return NULL;
 
   /* If need less alignment than we give anyway, just relay to malloc */
 
@@ -2798,7 +2798,7 @@ Void_t* mEMALIGn(alignment, bytes) size_t alignment; size_t bytes;
   nb = request2size(bytes);
   m  = (char*)(mALLOc(nb + alignment + MINSIZE));
 
-  if (m == 0) return 0; /* propagate failure */
+  if (m == NULL) return NULL; /* propagate failure */
 
   p = mem2chunk(m);
 
@@ -2923,10 +2923,10 @@ Void_t* cALLOc(n, elem_size) size_t n; size_t elem_size;
 #endif
   Void_t* mem = mALLOc (sz);
 
-  if ((long)n < 0) return 0;
+  if ((long)n < 0) return NULL;
 
-  if (mem == 0)
-    return 0;
+  if (mem == NULL)
+    return NULL;
   else
   {
     p = mem2chunk(mem);
@@ -3072,7 +3072,7 @@ size_t malloc_usable_size(mem) Void_t* mem;
 #endif
 {
   mchunkptr p;
-  if (mem == 0)
+  if (mem == NULL)
     return 0;
   else
   {
diff --git a/common/hush.c b/common/hush.c
index 4c84c2f..eb6c879 100644
--- a/common/hush.c
+++ b/common/hush.c
@@ -289,8 +289,7 @@ struct variables {
 char **global_argv;
 unsigned int global_argc;
 #endif
-unsigned int last_return_code;
-int nesting_level;
+static unsigned int last_return_code;
 #ifndef __U_BOOT__
 extern char **environ; /* This is in <unistd.h>, but protected with __USE_GNU */
 #endif
@@ -2172,7 +2171,7 @@ int set_local_var(const char *s, int flg_export)
 	 * NAME=VALUE format.  So the first order of business is to
 	 * split 's' on the '=' into 'name' and 'value' */
 	value = strchr(name, '=');
-	if (value==0 && ++value==0) {
+	if (value == NULL && ++value == NULL) {
 		free(name);
 		return -1;
 	}
@@ -2207,13 +2206,13 @@ int set_local_var(const char *s, int flg_export)
 			result = -1;
 		} else {
 			cur->name = strdup(name);
-			if(cur->name == 0) {
+			if (cur->name == NULL) {
 				free(cur);
 				result = -1;
 			} else {
 				struct variables *bottom = top_vars;
 				cur->value = strdup(value);
-				cur->next = 0;
+				cur->next = NULL;
 				cur->flg_export = flg_export;
 				cur->flg_read_only = 0;
 				while(bottom->next) bottom=bottom->next;
@@ -2246,7 +2245,7 @@ void unset_local_var(const char *name)
 			if(strcmp(cur->name, name)==0)
 				break;
 		}
-		if(cur!=0) {
+		if (cur != NULL) {
 			struct variables *next = top_vars;
 			if(cur->flg_read_only) {
 				error_msg("%s: readonly variable", name);
@@ -2329,7 +2328,8 @@ static int setup_redirect(struct p_context *ctx, int fd, redir_type style,
 }
 #endif
 
-struct pipe *new_pipe(void) {
+static struct pipe *new_pipe(void)
+{
 	struct pipe *pi;
 	pi = xmalloc(sizeof(struct pipe));
 	pi->num_progs = 0;
@@ -2387,7 +2387,7 @@ static struct reserved_combo reserved_list[] = {
 };
 #define NRES (sizeof(reserved_list)/sizeof(struct reserved_combo))
 
-int reserved_word(o_string *dest, struct p_context *ctx)
+static int reserved_word(o_string *dest, struct p_context *ctx)
 {
 	struct reserved_combo *r;
 	for (r=reserved_list;
@@ -2924,8 +2924,8 @@ int parse_string(o_string *dest, struct p_context *ctx, const char *src)
 #endif
 
 /* return code is 0 for normal exit, 1 for syntax error */
-int parse_stream(o_string *dest, struct p_context *ctx,
-	struct in_str *input, int end_trigger)
+static int parse_stream(o_string *dest, struct p_context *ctx,
+			struct in_str *input, int end_trigger)
 {
 	unsigned int ch, m;
 #ifndef __U_BOOT__
@@ -3124,13 +3124,13 @@ int parse_stream(o_string *dest, struct p_context *ctx,
 	return 0;
 }
 
-void mapset(const unsigned char *set, int code)
+static void mapset(const unsigned char *set, int code)
 {
 	const unsigned char *s;
 	for (s=set; *s; s++) map[*s] = code;
 }
 
-void update_ifs_map(void)
+static void update_ifs_map(void)
 {
 	/* char *ifs and char map[256] are both globals. */
 	ifs = (uchar *)getenv("IFS");
@@ -3158,7 +3158,7 @@ void update_ifs_map(void)
 
 /* most recursion does not come through here, the exeception is
  * from builtin_source() */
-int parse_stream_outer(struct in_str *inp, int flag)
+static int parse_stream_outer(struct in_str *inp, int flag)
 {
 
 	struct p_context ctx;
@@ -3292,7 +3292,7 @@ int u_boot_hush_start(void)
 		top_vars = malloc(sizeof(struct variables));
 		top_vars->name = "HUSH_VERSION";
 		top_vars->value = "0.01";
-		top_vars->next = 0;
+		top_vars->next = NULL;
 		top_vars->flg_export = 0;
 		top_vars->flg_read_only = 1;
 #ifdef CONFIG_NEEDS_MANUAL_RELOC
@@ -3628,7 +3628,8 @@ static char * make_string(char ** inp)
 }
 
 #ifdef __U_BOOT__
-int do_showvar (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+static int do_showvar(cmd_tbl_t *cmdtp, int flag, int argc,
+		      char * const argv[])
 {
 	int i, k;
 	int rcode = 0;
diff --git a/common/image.c b/common/image.c
index 750a98b..df642e6 100644
--- a/common/image.c
+++ b/common/image.c
@@ -1279,7 +1279,7 @@ void boot_fdt_add_mem_rsv_regions(struct lmb *lmb, void *fdt_blob)
 int boot_relocate_fdt(struct lmb *lmb, char **of_flat_tree, ulong *of_size)
 {
 	void	*fdt_blob = *of_flat_tree;
-	void	*of_start = 0;
+	void	*of_start = NULL;
 	char	*fdt_high;
 	ulong	of_len = 0;
 	int	err;
@@ -1312,7 +1312,7 @@ int boot_relocate_fdt(struct lmb *lmb, char **of_flat_tree, ulong *of_size)
 			of_start =
 			    (void *)(ulong) lmb_alloc_base(lmb, of_len, 0x1000,
 							   (ulong)desired_addr);
-			if (of_start == 0) {
+			if (of_start == NULL) {
 				puts("Failed using fdt_high value for Device Tree");
 				goto error;
 			}
@@ -1327,7 +1327,7 @@ int boot_relocate_fdt(struct lmb *lmb, char **of_flat_tree, ulong *of_size)
 						   + getenv_bootm_low());
 	}
 
-	if (of_start == 0) {
+	if (of_start == NULL) {
 		puts("device tree - allocation error\n");
 		goto error;
 	}
@@ -1703,7 +1703,7 @@ int boot_get_fdt(int flag, int argc, char * const argv[],
 	return 0;
 
 error:
-	*of_flat_tree = 0;
+	*of_flat_tree = NULL;
 	*of_size = 0;
 	return 1;
 }
diff --git a/common/main.c b/common/main.c
index 9507cec..592ce07 100644
--- a/common/main.c
+++ b/common/main.c
@@ -505,13 +505,13 @@ void reset_cmd_timeout(void)
 #define HIST_MAX		20
 #define HIST_SIZE		CONFIG_SYS_CBSIZE
 
-static int hist_max = 0;
-static int hist_add_idx = 0;
+static int hist_max;
+static int hist_add_idx;
 static int hist_cur = -1;
-unsigned hist_num = 0;
+static unsigned hist_num;
 
-char* hist_list[HIST_MAX];
-char hist_lines[HIST_MAX][HIST_SIZE + 1];	 /* Save room for NULL */
+static char *hist_list[HIST_MAX];
+static char hist_lines[HIST_MAX][HIST_SIZE + 1];	/* Save room for NULL */
 
 #define add_idx_minus_one() ((hist_add_idx == 0) ? hist_max : hist_add_idx-1)
 
diff --git a/common/usb_storage.c b/common/usb_storage.c
index 0c2a4c7..2d92ee1 100644
--- a/common/usb_storage.c
+++ b/common/usb_storage.c
@@ -192,7 +192,7 @@ block_dev_desc_t *usb_stor_get_dev(int index)
 }
 #endif
 
-void usb_show_progress(void)
+static void usb_show_progress(void)
 {
 	debug(".");
 }
@@ -437,7 +437,7 @@ static int usb_stor_BBB_reset(struct us_data *us)
 	result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev, 0),
 				 US_BBB_RESET,
 				 USB_TYPE_CLASS | USB_RECIP_INTERFACE,
-				 0, us->ifnum, 0, 0, USB_CNTL_TIMEOUT * 5);
+				 0, us->ifnum, NULL, 0, USB_CNTL_TIMEOUT * 5);
 
 	if ((result < 0) && (us->pusb_dev->status & USB_ST_STALLED)) {
 		USB_STOR_PRINTF("RESET:stall\n");
@@ -500,7 +500,7 @@ static int usb_stor_CB_reset(struct us_data *us)
  * Set up the command for a BBB device. Note that the actual SCSI
  * command is copied into cbw.CBWCDB.
  */
-int usb_stor_BBB_comdat(ccb *srb, struct us_data *us)
+static int usb_stor_BBB_comdat(ccb *srb, struct us_data *us)
 {
 	int result;
 	int actlen;
@@ -548,7 +548,7 @@ int usb_stor_BBB_comdat(ccb *srb, struct us_data *us)
 /* FIXME: we also need a CBI_command which sets up the completion
  * interrupt, and waits for it
  */
-int usb_stor_CB_comdat(ccb *srb, struct us_data *us)
+static int usb_stor_CB_comdat(ccb *srb, struct us_data *us)
 {
 	int result = 0;
 	int dir_in, retry;
@@ -617,7 +617,7 @@ int usb_stor_CB_comdat(ccb *srb, struct us_data *us)
 }
 
 
-int usb_stor_CBI_get_status(ccb *srb, struct us_data *us)
+static int usb_stor_CBI_get_status(ccb *srb, struct us_data *us)
 {
 	int timeout;
 
@@ -626,7 +626,7 @@ int usb_stor_CBI_get_status(ccb *srb, struct us_data *us)
 			(void *) &us->ip_data, us->irqmaxp, us->irqinterval);
 	timeout = 1000;
 	while (timeout--) {
-		if ((volatile int *) us->ip_wanted == 0)
+		if ((volatile int *) us->ip_wanted == NULL)
 			break;
 		mdelay(10);
 	}
@@ -665,18 +665,18 @@ int usb_stor_CBI_get_status(ccb *srb, struct us_data *us)
 #define USB_TRANSPORT_NOT_READY_RETRY 10
 
 /* clear a stall on an endpoint - special for BBB devices */
-int usb_stor_BBB_clear_endpt_stall(struct us_data *us, __u8 endpt)
+static int usb_stor_BBB_clear_endpt_stall(struct us_data *us, __u8 endpt)
 {
 	int result;
 
 	/* ENDPOINT_HALT = 0, so set value to 0 */
 	result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev, 0),
 				USB_REQ_CLEAR_FEATURE, USB_RECIP_ENDPOINT,
-				0, endpt, 0, 0, USB_CNTL_TIMEOUT * 5);
+				0, endpt, NULL, 0, USB_CNTL_TIMEOUT * 5);
 	return result;
 }
 
-int usb_stor_BBB_transport(ccb *srb, struct us_data *us)
+static int usb_stor_BBB_transport(ccb *srb, struct us_data *us)
 {
 	int result, retry;
 	int dir_in;
@@ -798,7 +798,7 @@ again:
 	return result;
 }
 
-int usb_stor_CB_transport(ccb *srb, struct us_data *us)
+static int usb_stor_CB_transport(ccb *srb, struct us_data *us)
 {
 	int result, status;
 	ccb *psrb;
diff --git a/common/xyzModem.c b/common/xyzModem.c
index a1f955b..f30b002 100644
--- a/common/xyzModem.c
+++ b/common/xyzModem.c
@@ -100,7 +100,7 @@ static struct
 
 #ifndef REDBOOT			/*SB */
 typedef int cyg_int32;
-int
+static int
 CYGACC_COMM_IF_GETC_TIMEOUT (char chan, char *c)
 {
 #define DELAY 20
@@ -118,7 +118,7 @@ CYGACC_COMM_IF_GETC_TIMEOUT (char chan, char *c)
   return 0;
 }
 
-void
+static void
 CYGACC_COMM_IF_PUTC (char x, char y)
 {
   putc (y);
@@ -165,7 +165,7 @@ _tolower (char c)
 }
 
 /* Parse (scan) a number */
-bool
+static bool
 parse_num (char *s, unsigned long *val, char **es, char *delim)
 {
   bool first = true;