[PATCH 1/3] driver core: Support asynchronous driver shutdown

[Christoph Hellwig]

On Tue, Dec 19, 2023 at 03:49:18PM +0200, Sagi Grimberg wrote:
>>> I could change this so that the existing shutdown() method
>>> is always called, and the device is only added to the async_shutdown_list
>>> if a shutdown_post() (or as requested below, shutdown_wait())
>>> method is defined for the device.
>>
>> Yes, that's what I mean.
>
> I think its usually better to separate sync vs async interfaces. However
> I assume that the suggested interface exists elsewhere in the kernel, so
> its not a big deal.

I don't think we have async shutdown anywhere else.

It's also not really an async interface is the classic sense, but more a
fire now and then wait for completion later interface, i.e. no notication
on completion but pure polling.