On 09/08/2022 20:58, Stephen Hemminger wrote: >> >> However, due to the patch[1] merged into 5.19 kernel, 'driver_override' >> in the pci_dev is no longer NULL by writing '\00' to driver_override file. >> This causes PCI match device failure and the device will never be bound to >> their kernel driver. > > > Linux kernel does not look favorably on API changes and that looks like > the kernel changed behavior. That should be reported and fixed there.
To clarify around this issue: There were no API changes. Linux kernel follows the API exactly how it is described in the API document since 2014: Documentation/ABI/testing/sysfs-bus-pci There was no change in kernel API. There was a change in undocumented, unsupported and wrong usage of driver_override API. Best regards, Krzysztof
