On Wed, Nov 9, 2022 at 3:45 PM Greg KH <gregkh@xxxxxxxxxxxxxxxxxxx> wrote:
> On Sun, Nov 06, 2022 at 10:57:53PM +0800, Dawei Li wrote:
> > For bus-based driver, device removal is implemented as:
> > 1 device_remove()->
> > 2 bus->remove()->
> > 3 driver->remove()
> >
> > Driver core needs _no_ inform from callee(bus driver) about the
> > result of remove callback. In that case,
> > commit <fc7a6209d571> ("bus: Make remove callback return void")
Also please read Submitting Patches on how to provide a commit
reference in the message body.
> > forces struct bus_type::remove() be void-returned.
> >
> > Now we have the situation that both 1 & 2 of calling chain are
> > void-returned, so it does _not_ make much sense for 3(driver->remove)
> > to return non-void to its caller.
> >
> > So the basic idea behind this change is making remove() callback of
> > any bus-based driver to be void-returned.
> >
> > This change itself, is for device drivers based on acpi-bus.
--
With Best Regards,
Andy Shevchenko
