[PATCHv4 4/7] hwspinlock/core: add common OF helpers

[Ohad Ben-Cohen]

On Sun, Mar 2, 2014 at 10:19 PM, Bjorn Andersson <bjorn at kryo.se> wrote:
> When introducing the ability to reference a hwspin lock via a phandle
> in device tree it makes a big difference to be able to differ between
> the case of "initialization failed" or "device not yet probed"; so
> that the client knows if it should fail or retry later.

I'm not convinced.

The only advantage this brings is to avoid retrying in case a fatal
error has occurred. Such fatal errors are extremely rare, and when
they show up - extremely painful, and I suspect that optimizing them
wouldn't be a big win.

OTOH, keeping the code easier to read and less error prone is a big
win. I prefer we keep it simple for now.

Thanks,
Ohad.