Re: [RFC PATCH 0/2] Sysfs group create for empty groups.

[Jonathan Cameron <jic23@cam.ac.uk>]

I've dropped lkml on this discussion seeing as it will now be all linux-iio
stuff.

Anyhow, I've put together a patch set that does this on top of iio-blue.git.

Unfortunately it requires changes in a lot of drivers.

Basically you have to do iio_device_register last - after all ring and trigger
registrations (previously it had to be first).

Has the nice side effect of removing the need for that nasty regdone trick
that quite a lot of drivers use.

Sorry all but this will break almost all drivers currently out of tree.

I wasn't too nasty to implement, though it does mean embedding attribute_group
structures in struct iio_dev, struct iio_ring_buffer and struct iio_event_interface
and dynamically allocating the struct attribute pointer arrays + remembering to
free them.  That's all in the core though so as long as I haven't messed up shouldn't
effect anyone.

+ now we should get all the right notifications for file creation.

Will post patches once I've done all the driver reorderings as stated above.

Jonathan