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dt: allow add_subnode to create root subnodes 

Our subnode creation helper can't handle creation of root subnodes,
like "/memory". Fix this by allowing the parent node to be an empty
string, indicating the root node.

Signed-off-by: Alexander Graf <agraf@suse.de>
Reviewed-by: Peter Crosthwaite <peter.crosthwaite@petalogix.com>
This commit is contained in:
Alexander Graf 2012-05-17 11:40:42 +02:00
parent 94282e7146
commit c640d08834
1 changed files with 6 additions and 1 deletions
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7
device_tree.c
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@ -151,6 +151,7 @@ int qemu_devtree_add_subnode(void *fdt, const char *name)
char *dupname = g_strdup(name);
char *basename = strrchr(dupname, '/');
int retval;
int parent = 0;
if (!basename) {
g_free(dupname);
@ -160,7 +161,11 @@ int qemu_devtree_add_subnode(void *fdt, const char *name)
basename[0] = '\0';
basename++;
retval = fdt_add_subnode(fdt, findnode_nofail(fdt, dupname), basename);
if (dupname[0]) {
parent = findnode_nofail(fdt, dupname);
}
retval = fdt_add_subnode(fdt, parent, basename);
if (retval < 0) {
fprintf(stderr, "FDT: Failed to create subnode %s: %s\n", name,
fdt_strerror(retval));