Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754899AbaDQNv5 (ORCPT ); Thu, 17 Apr 2014 09:51:57 -0400 Received: from cam-admin0.cambridge.arm.com ([217.140.96.50]:48815 "EHLO cam-admin0.cambridge.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753367AbaDQNoz (ORCPT ); Thu, 17 Apr 2014 09:44:55 -0400 From: Will Deacon To: linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org Cc: arnd@arndb.de, monstr@monstr.eu, dhowells@redhat.com, broonie@linaro.org, benh@kernel.crashing.org, peterz@infradead.org, paulmck@linux.vnet.ibm.com, Will Deacon Subject: [PATCH 13/18] powerpc: io: implement dummy relaxed accessor macros for writes Date: Thu, 17 Apr 2014 14:44:16 +0100 Message-Id: <1397742261-15621-14-git-send-email-will.deacon@arm.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1397742261-15621-1-git-send-email-will.deacon@arm.com> References: <1397742261-15621-1-git-send-email-will.deacon@arm.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org write{b,w,l,q}_relaxed are implemented by some architectures in order to permit memory-mapped I/O accesses with weaker barrier semantics than the non-relaxed variants. This patch adds dummy macros for the write accessors to powerpc, in the same vein as the dummy definitions for the relaxed read accessors. Cc: Benjamin Herrenschmidt Signed-off-by: Will Deacon --- arch/powerpc/include/asm/io.h | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) diff --git a/arch/powerpc/include/asm/io.h b/arch/powerpc/include/asm/io.h index 97d3869991ca..9eaf301ac952 100644 --- a/arch/powerpc/include/asm/io.h +++ b/arch/powerpc/include/asm/io.h @@ -617,10 +617,14 @@ static inline void name at \ /* * We don't do relaxed operations yet, at least not with this semantic */ -#define readb_relaxed(addr) readb(addr) -#define readw_relaxed(addr) readw(addr) -#define readl_relaxed(addr) readl(addr) -#define readq_relaxed(addr) readq(addr) +#define readb_relaxed(addr) readb(addr) +#define readw_relaxed(addr) readw(addr) +#define readl_relaxed(addr) readl(addr) +#define readq_relaxed(addr) readq(addr) +#define writeb_relaxed(v, addr) writeb(v, addr) +#define writew_relaxed(v, addr) writew(v, addr) +#define writel_relaxed(v, addr) writel(v, addr) +#define writeq_relaxed(v, addr) writeq(v, addr) #ifdef CONFIG_PPC32 #define mmiowb() -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/