Re: [Qemu-devel] [PATCH 01/31] dt: allow add_subnode to create root subnodes

[Peter Crosthwaite <peter.crosthwaite@petalogix.com>]

On Wed, 2012-06-06 at 01:52 +0200, Alexander Graf wrote:
> 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>

> ---
>  device_tree.c |    7 ++++++-
>  1 files changed, 6 insertions(+), 1 deletions(-)
> 
> diff --git a/device_tree.c b/device_tree.c
> index 86a694c..94a239e 100644
> --- a/device_tree.c
> +++ b/device_tree.c
> @@ -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));