Re: [patch 21/32] NTB/msi: Convert to msi_on_each_desc()

[Thomas Gleixner]

On Wed, Dec 01 2021 at 14:47, Jason Gunthorpe wrote:
> On Wed, Dec 01, 2021 at 07:37:32PM +0100, Thomas Gleixner wrote:
>> I picked that because it _is_ already used to establish the connection
>> to the switchtec_class NTB driver which is beyond the usual cdev muck.
>
> IMHO that is also a misuse. These days two drivers should be hooked
> together using an aux device, not a cdev and the obscure
> class_interface stuff. Aux device supports auto probing and module
> auto loading for instance.
>
> An interrupt on an aux device is at least somewhat conceptually
> parallel to an interrupt on a mdev as both are usually representing
> some slice of a device.

No argument about that.