From mboxrd@z Thu Jan 1 00:00:00 1970 From: Vinod Koul Subject: Re: [PATCH 1/7] dmaengine: at_xdmac: prefer usage of readl/writel_relaxed Date: Thu, 13 Nov 2014 21:04:49 +0530 Message-ID: <20141113153449.GO24582@intel.com> References: <1415875965-6905-1-git-send-email-ludovic.desroches@atmel.com> <1415875965-6905-2-git-send-email-ludovic.desroches@atmel.com> <2791155.z0l2TZezWO@wuerfel> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <2791155.z0l2TZezWO@wuerfel> Sender: devicetree-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Arnd Bergmann Cc: linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, Ludovic Desroches , dmaengine-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, cyrille.pitchen-AIFe0yeh4nAAvxtiuMwx3w@public.gmane.org, nicolas.ferre-AIFe0yeh4nAAvxtiuMwx3w@public.gmane.org List-Id: devicetree@vger.kernel.org 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 > > --- > > > > 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 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html