On Wed, May 07, 2025 at 09:12:54AM +0200, Herve Codina wrote: > Device-tree node can be created when CONFIG_PCI_DYNAMIC_OF_NODES. Those > node are created and filled based on PCI core information but the > fwnode device field is not set. > > When later an overlay is applied, this consuses fw_devlink. Indeed, consuses? > 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. -- With Best Regards, Andy Shevchenko
