[PATCH 1/7] dmaengine: at_xdmac: prefer usage of readl/writel_relaxed

[Vinod Koul]

On Thu, Nov 13, 2014 at 12:01:49PM +0100, Arnd Bergmann wrote:
> On Thursday 13 November 2014 11:52:39 Ludovic Desroches wrote:
> > _relaxed version of readl and writel are not implemented on all
> > architecture so COMPILE_TEST has to be removed in order to not cause
> > some build failures.
> > 
> > Signed-off-by: Ludovic Desroches <ludovic.desroches at atmel.com>
> > ---
> > 
> 
> I've queued up Will Deacon's series to enable the relaxed accessors
> on all architectures, so the Kconfig change should no longer
> be required in 3.19.
And why is _relaxed() version required for thsi driver. Why cant readl(),
writel() with barriers do?

-- 
~Vinod