Re: [PATCH v5] driver core: enforce device_lock for driver_match_device()

[Danilo Krummrich]

On Wed Feb 25, 2026 at 9:19 PM CET, Cristian Marussi wrote:
> it has been reported by Gatien (in CC) that this break the SCMI OPTEE
> transport.
>
> Moreover I still have to verify, BUT I think this also breaks SCMI
> Virtio transport since both call platform_driver_register() during their
> probe, since a few years ago the SCMI transports have been reworked to be
> standalone full-fledged drivers.

I've had a quick look and I'm pretty sure that both transports/virtio.c and
transports/optee.c are broken.

Both cases look identical and I think the fix should be as trivial as moving
platform_driver_register() into module_init().

> I'll have a look in the next days if we can cope with this.

I already fixed those three [1,2,3]. If you can provide a patch for both of
them, that'd be great. Otherwise, please let me know if you want me to send
something.

Thanks,
Danilo

[1] https://lore.kernel.org/driver-core/20260121141215.29658-1-dakr@xxxxxxxxxx/
[2] https://lore.kernel.org/driver-core/20260123133614.72586-1-dakr@xxxxxxxxxx/
[3] https://lore.kernel.org/driver-core/20260212235842.85934-1-dakr@xxxxxxxxxx/