Re: [RFC PATCH 0/4] device_schedule_reprobe(): core helper and conversions

[Greg Kroah-Hartman <gregkh@linuxfoundation.org>]

On Tue, Aug 11, 2026 at 01:47:17AM +0100, Daniel Golle wrote:
> Three in-tree drivers (iwlwifi, hci_h5, btintel_pcie) schedule a
> deferred re-probe of their own device from a work item in module
> text.

That's a mess, why?  Why not fix that up to not do that?  Thousands of
other kernel drivers do not do that, what makes these so special?

> The hand-rolled copies share two bug classes: the work function
> ends with module_put(THIS_MODULE),

That's broken as-is.  a module should NEVER be calling
module_get(THIS_MODULE) either.

> racing a concurrent rmmod freeing
> the module text (the race module_put_and_kthread_exit() exists to
> close for kthreads), and nothing synchronizes the deferred detach
> against device_shutdown() or an administrative unbind.

yeah, that's a mess, don't do that.

Fix up the original drivers please, let's not encourage others to copy
this broken scheme.

Also, your patches were not threaded properly :(

thanks,

greg k-h