X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=tools%2Ffdtgrep.c;h=8f44f599c1c437525b9bfe9cb405ce6e9838a257;hb=1835cd2264ebd8814624b738d6e25ee772682cbe;hp=8d3fef40279a5bdaf6ee48d6137f18be06d3a013;hpb=e6de55ec5bf306df3b3cc8e7a4cc17fa1e78ca6c;p=u-boot

diff --git a/tools/fdtgrep.c b/tools/fdtgrep.c
index 8d3fef4027..8f44f599c1 100644
--- a/tools/fdtgrep.c
+++ b/tools/fdtgrep.c
@@ -1,23 +1,25 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * Copyright (c) 2013, Google Inc.
  * Written by Simon Glass <sjg@chromium.org>
  *
- * SPDX-License-Identifier:	GPL-2.0+
- *
  * Perform a grep of an FDT either displaying the source subset or producing
  * a new .dtb subset which can be used as required.
  */
 
 #include <assert.h>
 #include <ctype.h>
+#include <errno.h>
 #include <getopt.h>
+#include <fcntl.h>
+#include <stdbool.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <unistd.h>
 
-#include <../include/libfdt.h>
-#include <libfdt_internal.h>
+#include "fdt_host.h"
+#include "libfdt_internal.h"
 
 /* Define DEBUG to get some debugging output on stderr */
 #ifdef DEBUG
@@ -131,11 +133,11 @@ static int value_add(struct display_info *disp, struct value_node **headp,
 	}
 
 	str = strdup(str);
+	if (!str)
+		goto err_mem;
 	node = malloc(sizeof(*node));
-	if (!str || !node) {
-		fprintf(stderr, "Out of memory\n");
-		return -1;
-	}
+	if (!node)
+		goto err_mem;
 	node->next = *headp;
 	node->type = type;
 	node->include = include;
@@ -143,6 +145,9 @@ static int value_add(struct display_info *disp, struct value_node **headp,
 	*headp = node;
 
 	return 0;
+err_mem:
+	fprintf(stderr, "Out of memory\n");
+	return -1;
 }
 
 static bool util_is_printable_string(const void *data, int len)
@@ -405,7 +410,7 @@ static int display_fdt_by_regions(struct display_info *disp, const void *blob,
  * The output of this function may or may not be a valid FDT. To ensure it
  * is, these disp->flags must be set:
  *
- *   FDT_REG_SUPERNODES: ensures that subnodes are preceeded by their
+ *   FDT_REG_SUPERNODES: ensures that subnodes are preceded by their
  *		parents. Without this option, fragments of subnode data may be
  *		output without the supernodes above them. This is useful for
  *		hashing but cannot produce a valid FDT.
@@ -522,18 +527,21 @@ static int check_type_include(void *priv, int type, const char *data, int size)
 	 * return 1 at the first match. For exclusive conditions, we must
 	 * check that there are no matches.
 	 */
-	for (val = disp->value_head; val; val = val->next) {
-		if (!(type & val->type))
-			continue;
-		match = fdt_stringlist_contains(data, size, val->string);
-		debug("      - val->type=%x, str='%s', match=%d\n",
-		      val->type, val->string, match);
-		if (match && val->include) {
-			debug("   - match inc %s\n", val->string);
-			return 1;
+	if (data) {
+		for (val = disp->value_head; val; val = val->next) {
+			if (!(type & val->type))
+				continue;
+			match = fdt_stringlist_contains(data, size,
+							val->string);
+			debug("      - val->type=%x, str='%s', match=%d\n",
+			      val->type, val->string, match);
+			if (match && val->include) {
+				debug("   - match inc %s\n", val->string);
+				return 1;
+			}
+			if (match)
+				none_match &= ~val->type;
 		}
-		if (match)
-			none_match &= ~val->type;
 	}
 
 	/*
@@ -768,7 +776,7 @@ char *utilfdt_read(const char *filename)
  */
 static int do_fdtgrep(struct display_info *disp, const char *filename)
 {
-	struct fdt_region *region;
+	struct fdt_region *region = NULL;
 	int max_regions;
 	int count = 100;
 	char path[1024];
@@ -796,7 +804,7 @@ static int do_fdtgrep(struct display_info *disp, const char *filename)
 	 * The first pass will count the regions, but if it is too many,
 	 * we do another pass to actually record them.
 	 */
-	for (i = 0; i < 3; i++) {
+	for (i = 0; i < 2; i++) {
 		region = malloc(count * sizeof(struct fdt_region));
 		if (!region) {
 			fprintf(stderr, "Out of memory for %d regions\n",
@@ -810,14 +818,14 @@ static int do_fdtgrep(struct display_info *disp, const char *filename)
 				disp->flags);
 		if (count < 0) {
 			report_error("fdt_find_regions", count);
-			if (count == -FDT_ERR_BADLAYOUT)
-				fprintf(stderr,
-					"/aliases node must come before all other nodes\n");
+			free(region);
 			return -1;
 		}
 		if (count <= max_regions)
 			break;
 		free(region);
+		fprintf(stderr, "Internal error with fdtgrep_find_region)(\n");
+		return -1;
 	}
 
 	/* Optionally print a list of regions */