Am Donnerstag, 16. März 2023, 15:01:25 CET schrieb Oliver Neukum:
I'm not sure if I can follow you here. Can you elaborate?
There are far better reasons to leave the setup of a PCI bus as the firmware has done it than to leave a USB as is.
How is it necessary? How do these PCI devices get attaches to the pci_bus_type bus without calling pci_bus_add_device?
AFAICT they don't. But somebody has to call it.
Okay, so which dependency is provided by pci_sysfs_init, which are required by drivers then?
It isn't. It is missing from the code. But it exists in reality. That is the point. You have a race condition between two probes. We cannot have that. Hence IMHO the dependency would be best expressed by waiting for pci_sysfs_init() to finish in the init sequence before you add any PCI bridges or devices to the system. Regards Oliver
