Hi Vikram,

> -----Original Message-----
> Subject: [XEN][PATCH v6 08/19] xen/device-tree: Add
> device_tree_find_node_by_path() to find nodes in device tree
>
> Add device_tree_find_node_by_path() to find a matching node with path for
> a
> dt_device_node.
>
> Reason behind this function:
>     Each time overlay nodes are added using .dtbo, a new fdt(memcpy of
>     device_tree_flattened) is created and updated with overlay nodes. This
>     updated fdt is further unflattened to a dt_host_new. Next, we need to find
>     the overlay nodes in dt_host_new, find the overlay node's parent in dt_host
>     and add the nodes as child under their parent in the dt_host. Thus we need
>     this function to search for node in different unflattened device trees.
>
> Also, make dt_find_node_by_path() static inline.
>
> Signed-off-by: Vikram Garhwal <vikram.garhwal@amd.com>
> ---
>  xen/common/device_tree.c      |  5 +++--
>  xen/include/xen/device_tree.h | 17 +++++++++++++++--
>  2 files changed, 18 insertions(+), 4 deletions(-)
>

[...]

>  /**
> - * dt_find_node_by_path - Find a node matching a full DT path
> + * device_tree_find_node_by_path - Generic function to find a node
> matching the
> + * full DT path for any given unflatten device tree
> + * @dt_node: The device tree to search

I noticed that you missed Michal's comment here about renaming the
"dt_node" here to "dt" to match below function prototype...

>   * @path: The full path to match
>   *
>   * Returns a node pointer.
>   */
> -struct dt_device_node *dt_find_node_by_path(const char *path);
> +struct dt_device_node *device_tree_find_node_by_path(struct
> dt_device_node *dt,

...here. I personally agree with Michal so I think please fix the comment
to keep consistency.

The rest of the patch looks good to me, so as long as you fixed this, you
can have my:

Reviewed-by: Henry Wang <Henry.Wang@arm.com>

Kind regards,
Henry