[PATCH 3/3] ath10k: add explicit memory barrier for ring index update

[Kalle Valo]

Michal Kazior <michal.kazior at tieto.com> writes:

> Avery reported he had some issues related to
> instructions being re-ordered on his ARM test
> system resulting in firmware crashes.
>
> This makes sure that data is in place before CE
> ring index is updated telling firmware it can
> fetch the data.
>
> Reported-By: Avery Pennarun <apenwarr at gmail.com>
> Signed-off-by: Michal Kazior <michal.kazior at tieto.com>

I have dropped this patch for now. Like I said before, let's first be
sure that all memory barrier issues are resolved and only then apply
this.

-- 
Kalle Valo