[PATCH v5 1/3] ARM: Introduce atomic MMIO modify

[Jason Cooper]

On Thu, Jan 02, 2014 at 11:30:57AM +0000, Russell King - ARM Linux wrote:
> On Tue, Dec 10, 2013 at 11:41:35AM -0300, Ezequiel Garcia wrote:
> > Some SoC have MMIO regions that are shared across orthogonal
> > subsystems. This commit implements a possible solution for the
> > thread-safe access of such regions through a spinlock-protected API.
> > 
> > Concurrent access is protected with a single spinlock for the
> > entire MMIO address space. While this protects shared-registers,
> > it also serializes access to unrelated/unshared registers.
> > 
> > We add relaxed and non-relaxed variants, by using writel_relaxed and writel,
> > respectively. The rationale for this is that some users may not require
> > register write completion but only thread-safe access to a register.
> > 
> > Signed-off-by: Ezequiel Garcia <ezequiel.garcia at free-electrons.com>
> 
> Okay, so this patch has been submitted to the patch system, but it
> contains no other tags other than Ezequiel's sign-off.  Clearly
> other people *have* reviewed it.
> 
> Can we please have some acks etc for it please?

Acked-by: Jason Cooper <jason at lakedaemon.net>

Happy New Year!

Jason.