Re: [PATCH v10 08/10] PCI: of: Set fwnode device of newly created PCI device nodes

[Manivannan Sadhasivam]

On Fri, Jul 17, 2026 at 04:51:43PM +0200, Herve Codina wrote:
> Device-tree node can be created when CONFIG_PCI_DYNAMIC_OF_NODES. Those
> nodes are created and filled based on PCI core information but the
> fwnode device field is not set.
> 
> When later an overlay is applied, this confuses fw_devlink. Indeed,
> without any device attached to the node, fw_devlink considers that this
> node will never become a device. When this node is pointed as a
> supplier, devlink looks at its ancestors in order to find a node with a
> device that could be used as the supplier.
> 
> In the PCI use case, this leads to links that wrongly use the PCI root
> bridge device as the supplier instead of the expected PCI device.
> 
> Setting the fwnode device to the device of the PCI device allows devlink
> to use this device as a supplier and so, correct links are created.
> 
> Fixes: 407d1a51921e ("PCI: Create device tree node for bridge")
> Cc: stable@xxxxxxxxxxxxxxx
> Signed-off-by: Herve Codina <herve.codina@xxxxxxxxxxx>

Acked-by: Manivannan Sadhasivam <manivannan.sadhasivam@xxxxxxxxxxxxxxxx>

- Mani

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