From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8E71DC43381 for ; Fri, 22 Feb 2019 18:05:08 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6BCE72075C for ; Fri, 22 Feb 2019 18:05:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727681AbfBVSFH (ORCPT ); Fri, 22 Feb 2019 13:05:07 -0500 Received: from usa-sjc-mx-foss1.foss.arm.com ([217.140.101.70]:38178 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727656AbfBVSFF (ORCPT ); Fri, 22 Feb 2019 13:05:05 -0500 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.72.51.249]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 0E010165C; Fri, 22 Feb 2019 10:05:05 -0800 (PST) Received: from fuggles.cambridge.arm.com (usa-sjc-imap-foss1.foss.arm.com [10.72.51.249]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 7D9A23F5C1; Fri, 22 Feb 2019 10:05:03 -0800 (PST) From: Will Deacon To: linux-arch@vger.kernel.org Cc: linux-kernel@vger.kernel.org, andrew.murray@arm.com, arnd@arndb.de, catalin.marinas@arm.com, geert@linux-m68k.org, palmer@sifive.com, Will Deacon Subject: [PATCH v2 3/3] arm64: io: Hook up __io_par() for inX() ordering Date: Fri, 22 Feb 2019 18:04:54 +0000 Message-Id: <20190222180454.5992-4-will.deacon@arm.com> X-Mailer: git-send-email 2.11.0 In-Reply-To: <20190222180454.5992-1-will.deacon@arm.com> References: <20190222180454.5992-1-will.deacon@arm.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Ensure that inX() provides the same ordering guarantees as readX() by hooking up __io_par() so that it maps directly to __iormb(). Reported-by: Andrew Murray Signed-off-by: Will Deacon --- arch/arm64/include/asm/io.h | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm64/include/asm/io.h b/arch/arm64/include/asm/io.h index ee723835c1f4..8bb7210ac286 100644 --- a/arch/arm64/include/asm/io.h +++ b/arch/arm64/include/asm/io.h @@ -121,6 +121,7 @@ static inline u64 __raw_readq(const volatile void __iomem *addr) : "memory"); \ }) +#define __io_par(v) __iormb(v) #define __iowmb() wmb() #define mmiowb() do { } while (0) -- 2.11.0