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For fdt_find_node_by_path(), handle the root path properly. 

Also removes the special case root path detection in cmd_fdt.c since it
is no longer necessary.

Signed-off-by: Gerald Van Baren <vanbaren@cideas.com>
This commit is contained in:
Gerald Van Baren 2007-05-21 23:27:16 -04:00
parent 9675ee7208
commit 06e19a0770
2 changed files with 16 additions and 23 deletions
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35
common/cmd_fdt.c
View File

@ -52,25 +52,6 @@ static int fdt_parse_prop(char *pathp, char *prop, char *newval,
char *data, int *len);
static int fdt_print(char *pathp, char *prop, int depth);
static int findnodeoffset(const char *pathp)
{
int nodeoffset;
if (strcmp(pathp, "/") == 0) {
nodeoffset = 0;
} else {
nodeoffset = fdt_find_node_by_path (fdt, pathp);
if (nodeoffset < 0) {
/*
* Not found or something else bad happened.
*/
printf ("findnodeoffset() libfdt: %s\n",
fdt_strerror(nodeoffset));
}
}
return nodeoffset;
}
/*
* Flattened Device Tree command, see the help for parameter definitions.
*/
@ -187,11 +168,13 @@ int do_fdt (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
pathp = argv[2];
nodep = argv[3];
nodeoffset = findnodeoffset(pathp);
nodeoffset = fdt_find_node_by_path (fdt, pathp);
if (nodeoffset < 0) {
/*
* Not found or something else bad happened.
*/
printf ("libfdt fdt_find_node_by_path() returned %s\n",
fdt_strerror(nodeoffset));
return 1;
}
err = fdt_add_subnode(fdt, nodeoffset, nodep);
@ -225,11 +208,13 @@ int do_fdt (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
prop = argv[3];
newval = argv[4];
nodeoffset = findnodeoffset(pathp);
nodeoffset = fdt_find_node_by_path (fdt, pathp);
if (nodeoffset < 0) {
/*
* Not found or something else bad happened.
*/
printf ("libfdt fdt_find_node_by_path() returned %s\n",
fdt_strerror(nodeoffset));
return 1;
}
ret = fdt_parse_prop(pathp, prop, newval, data, &len);
@ -283,11 +268,13 @@ int do_fdt (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
* Get the path. The root node is an oddball, the offset
* is zero and has no name.
*/
nodeoffset = findnodeoffset(argv[2]);
nodeoffset = fdt_find_node_by_path (fdt, argv[2]);
if (nodeoffset < 0) {
/*
* Not found or something else bad happened.
*/
printf ("libfdt fdt_find_node_by_path() returned %s\n",
fdt_strerror(nodeoffset));
return 1;
}
/*
@ -584,11 +571,13 @@ static int fdt_print(char *pathp, char *prop, int depth)
int len; /* length of the property */
int level = 0; /* keep track of nesting level */
nodeoffset = findnodeoffset(pathp);
nodeoffset = fdt_find_node_by_path (fdt, pathp);
if (nodeoffset < 0) {
/*
* Not found or something else bad happened.
*/
printf ("libfdt fdt_find_node_by_path() returned %s\n",
fdt_strerror(nodeoffset));
return 1;
}
/*

4
libfdt/fdt_ro.c
View File

@ -283,6 +283,10 @@ int fdt_find_node_by_path(const void *fdt, const char *path)
if (*path != '/')
return -FDT_ERR_BADPATH;
/* Handle the root path: root offset is 0 */
if (strcmp(path, "/") == 0)
return 0;
while (*p) {
const char *q;