Re: [PATCH] driver core: introduce PROBE_FORCE_ASYNCHRONOUS

[Greg Kroah-Hartman]

On Sun, Jul 26, 2026 at 10:54:54PM -0700, Dmitry Torokhov wrote:
> On Mon, Jul 27, 2026 at 07:40:57AM +0200, Greg Kroah-Hartman wrote:
> > On Sun, Jul 26, 2026 at 10:31:41PM -0700, Dmitry Torokhov wrote:
> > > Add PROBE_FORCE_ASYNCHRONOUS probe type enum and update
> > > driver_allows_async_probing() to allow asynchronous probing for drivers
> > > marked with this type.
> > > 
> > > While PROBE_PREFER_ASYNCHRONOUS exists, it represents a temporary opt-in
> > > preference. Subsystems that require asynchronous probing (such as slow
> > > legacy buses) need a dedicated probe type to guarantee asynchronous
> > > execution.
> > > 
> > > Assisted-by: Antigravity:gemini-3.5-flash
> > > Signed-off-by: Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx>
> > > ---
> > > 
> > > I am planning to rework serio and gameport subsystems to rely on
> > > asynchronous probing instead of rolling their own implementations.
> > 
> > What do you mean?  Why doesn't the PROBE_PREFER_ASYNCHRONOUS work for
> > you for those subsystems?
> 
> It shows the intent. It is not "preference" anymore, it is a "must". If
> we ever introduce switch to make probing synchronous for some reason it
> should not affect drivers that must be probed asynchronously.

I'm sorry, but I don't understand.  And as there's no users for this, we
really can't take it until we see those users at the same time :)

thanks,

greg k-h