Re: [PATCH v11 0/7] iio: add new backend framework

["Nuno Sá" <noname.nuno@gmail.com>]

On Sun, 2024-02-11 at 18:55 +0200, Andy Shevchenko wrote:
> On Sat, Feb 10, 2024 at 10:57 PM Nuno Sa via B4 Relay
> <devnull+nuno.sa.analog.com@kernel.org> wrote:
> 
> > Changes in v11:
> >  - Patch 6
> >    * Directly use dev in devm_iio_backend_get();
> >    * Move comment above the proper place.
> >  - Patch 7
> >    * Added blank line between includes (to logically separate them);
> >    * Move back to 10 millisecond sleep;
> >    * Constify expected_ver and removed unneeded cast.
> 
> Assuming that the fwnode vs. device reference count is fine (as we
> expect the backends to call respective APIs and hence have backend
> device pointer valid despote fwnode reference being dropped before
> getting the device) and timeout thingy had been reverted to the
> original value, FWIW,
> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
> for patches 4-7 (OF is not my area of interest at all :).
> 

Thanks for the ack!

If I understood the above correctly, we should be fine. Unless the fwnode
refcount can reach 0 without unbinding the device from it's driver (which I
don't think it's possible). Note the backend will be freed on the unbind path
and through devlinks, we guarantee that all the consumers are unbound before
us...

- Nuno Sá
>