X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=tools%2Ffdtgrep.c;h=f2b8b71ed743478be80cb91375a7670c7f6e38d9;hb=57a72d0560eb7693a35a891f43587bcd6786dc04;hp=caaf6006a5dd24c96cd6a969d8fda1b1fa2e2554;hpb=7c0e5d865ff0b86dfce492b656238919c659d756;p=u-boot

diff --git a/tools/fdtgrep.c b/tools/fdtgrep.c
index caaf6006a5..f2b8b71ed7 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
@@ -405,7 +407,7 @@ 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 +524,21 @@ 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;
 	}
 
 	/*
@@ -660,6 +665,8 @@ static int fdtgrep_find_regions(const void *fdt,
 		if (!ret)
 			count++;
 	}
+	if (ret && ret != -FDT_ERR_NOTFOUND)
+		return ret;
 
 	/* Find all the aliases and add those regions back in */
 	if (disp->add_aliases && count < max_regions) {
@@ -667,33 +674,22 @@ static int fdtgrep_find_regions(const void *fdt,
 
 		new_count = fdt_add_alias_regions(fdt, region, count,
 						  max_regions, &state);
-		if (new_count > max_regions) {
-			region = malloc(new_count * sizeof(struct fdt_region));
-			if (!region) {
-				fprintf(stderr,
-					"Out of memory for %d regions\n",
-					count);
-				return -1;
-			}
-			memcpy(region, state.region,
-			       count * sizeof(struct fdt_region));
-			free(state.region);
-			new_count = fdt_add_alias_regions(fdt, region, count,
-							  max_regions, &state);
+		if (new_count == -FDT_ERR_NOTFOUND) {
+			/* No alias node found */
+		} else if (new_count < 0) {
+			return new_count;
+		} else if (new_count <= max_regions) {
+			/*
+			* The alias regions will now be at the end of the list.
+			* Sort the regions by offset to get things into the
+			* right order
+			*/
+			count = new_count;
+			qsort(region, count, sizeof(struct fdt_region),
+			      h_cmp_region);
 		}
-
-		/*
-		 * The alias regions will now be at the end of the list. Sort
-		 * the regions by offset to get things into the right order
-		 */
-		qsort(region, new_count, sizeof(struct fdt_region),
-		      h_cmp_region);
-		count = new_count;
 	}
 
-	if (ret != -FDT_ERR_NOTFOUND)
-		return ret;
-
 	return count;
 }
 
@@ -805,7 +801,7 @@ 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 < 2; i++) {
+	for (i = 0; i < 3; i++) {
 		region = malloc(count * sizeof(struct fdt_region));
 		if (!region) {
 			fprintf(stderr, "Out of memory for %d regions\n",