On Thu, Jun 9, 2016 at 12:50 AM, Gavin Shan <gwshan@xxxxxxxxxxxxxxxxxx> wrote:
> The function is unflattening device sub-tree blob if @dad passed to
> the function is valid. Currently, this functionality is used by PPC
> PowerNV PCI hotplug driver only. There are possibly multiple nodes
> in the first level of depth, fdt_next_node() bails immediately when
> @depth becomes negative before the second device node can be probed
> successfully. It leads to the device nodes except the first one won't
> be unflattened successfully.
>
> This fixes the issue by setting the initial depth (@inital_depth) to
> 1 when this function is called to unflatten device sub-tree blob. No
> logic changes when this function is used to unflatten non-sub-tree
> blob.
>
> Cc: Rhyland Klein <rklein@xxxxxxxxxx>
> Fixes: 78c44d910 ("drivers/of: Fix depth when unflattening devicetree")
> Signed-off-by: Gavin Shan <gwshan@xxxxxxxxxxxxxxxxxx>
> Tested-by: Rhyland Klein <rklein@xxxxxxxxxx>
> Tested-by: Andrew Donnellan <andrew.donnellan@xxxxxxxxxxx>
> ---
> v2: Change @depth before initializing @fpsizes[depth] and @nps[depth]
> ---
> drivers/of/fdt.c | 15 +++++++++++++--
> 1 file changed, 13 insertions(+), 2 deletions(-)
Applied, thanks.
Rob
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