From patchwork Wed Feb 19 17:49:58 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Krzysztof Kozlowski X-Patchwork-Id: 210837 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=-4.1 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=no 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 03AB9C18DF4 for ; Wed, 19 Feb 2020 17:51:12 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id D42F1206DB for ; Wed, 19 Feb 2020 17:51:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1582134671; bh=HVHQjGSEocd9AVyWevt6joEF+d2PPbwr8+8k6h+A34M=; h=From:To:Cc:Subject:Date:List-ID:From; b=hXy5GaO7HG2a5sR/r73xYyHflwpnkY9jArBp5pHqeZ/AZ0fb2DTlMiJsXRgwHbElF pOaYr+pDo4ZvGKrHtpoIT04SLX7Qu2HCncLhZUlzDNyCd1+25LWVEdF+/Jhe2w7Ede rj6R+ur1XYTnW5Mc05peqlsv9ytapm/Kz47pnnu4= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726651AbgBSRvF (ORCPT ); Wed, 19 Feb 2020 12:51:05 -0500 Received: from mail.kernel.org ([198.145.29.99]:49980 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726539AbgBSRvF (ORCPT ); Wed, 19 Feb 2020 12:51:05 -0500 Received: from localhost.localdomain (unknown [194.230.155.125]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 0A9F7206DB; Wed, 19 Feb 2020 17:50:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1582134663; bh=HVHQjGSEocd9AVyWevt6joEF+d2PPbwr8+8k6h+A34M=; h=From:To:Cc:Subject:Date:From; b=PxIaHkLn5XTar1EPyISd4vtwzk0Yb8ho6/2/5bpHXPVckPViPmh7xJy5CDKknCISe aVweOki+hxup4Tb6Es9L3KhQ8BxFokAKuut29izMLGuhQbvVvdmhKIAJt21HDJ6Icz WQ/bI2EQHItOjyTVPfGGfciGRDULmeQrq4s9rqPA= From: Krzysztof Kozlowski To: Richard Henderson , Ivan Kokshaysky , Matt Turner , Alexey Brodkin , Vineet Gupta , "James E.J. Bottomley" , Helge Deller , Benjamin Herrenschmidt , Paul Mackerras , Michael Ellerman , Yoshinori Sato , Rich Felker , Dave Airlie , David Airlie , Daniel Vetter , Ben Skeggs , Mauro Carvalho Chehab , Jiri Slaby , Nick Kossifidis , Luis Chamberlain , Kalle Valo , "David S. Miller" , Dave Jiang , Jon Mason , Allen Hubbe , "Michael S. Tsirkin" , Jason Wang , Arnd Bergmann , Geert Uytterhoeven , Andrew Morton , Thomas Gleixner , linux-alpha@vger.kernel.org, linux-kernel@vger.kernel.org, linux-snps-arc@lists.infradead.org, linux-parisc@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-sh@vger.kernel.org, dri-devel@lists.freedesktop.org, nouveau@lists.freedesktop.org, linux-media@vger.kernel.org, linux-wireless@vger.kernel.org, netdev@vger.kernel.org, linux-ntb@googlegroups.com, virtualization@lists.linux-foundation.org, linux-arch@vger.kernel.org Cc: Krzysztof Kozlowski Subject: [RESEND PATCH v2 0/9] iomap: Constify ioreadX() iomem argument Date: Wed, 19 Feb 2020 18:49:58 +0100 Message-Id: <20200219175007.13627-1-krzk@kernel.org> X-Mailer: git-send-email 2.17.1 Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org Hi, Changes since v1 ================ https://lore.kernel.org/lkml/1578415992-24054-1-git-send-email-krzk@kernel.org/ 1. Constify also ioreadX_rep() and mmio_insX(), 2. Squash lib+alpha+powerpc+parisc+sh into one patch for bisectability, 3. Add acks and reviews, 4. Re-order patches so all optional driver changes are at the end. Description =========== The ioread8/16/32() and others have inconsistent interface among the architectures: some taking address as const, some not. It seems there is nothing really stopping all of them to take pointer to const. Patchset was only compile tested on affected architectures. No real testing. volatile ======== There is still interface inconsistency between architectures around "volatile" qualifier: - include/asm-generic/io.h:static inline u32 ioread32(const volatile void __iomem *addr) - include/asm-generic/iomap.h:extern unsigned int ioread32(const void __iomem *); This is still discussed and out of scope of this patchset. Merging ======= Multiple architectures are affected in first patch so acks are welcomed. 1. All patches depend on first patch, 2. Patches 2-4 unify the interface also in few drivers, 3. PAtches 5-9 are optional cleanup, without actual impact. Best regards, Krzysztof Krzysztof Kozlowski (9): iomap: Constify ioreadX() iomem argument (as in generic implementation) rtl818x: Constify ioreadX() iomem argument (as in generic implementation) ntb: intel: Constify ioreadX() iomem argument (as in generic implementation) virtio: pci: Constify ioreadX() iomem argument (as in generic implementation) arc: Constify ioreadX() iomem argument (as in generic implementation) drm/mgag200: Constify ioreadX() iomem argument (as in generic implementation) drm/nouveau: Constify ioreadX() iomem argument (as in generic implementation) media: fsl-viu: Constify ioreadX() iomem argument (as in generic implementation) ath5k: Constify ioreadX() iomem argument (as in generic implementation) arch/alpha/include/asm/core_apecs.h | 6 +- arch/alpha/include/asm/core_cia.h | 6 +- arch/alpha/include/asm/core_lca.h | 6 +- arch/alpha/include/asm/core_marvel.h | 4 +- arch/alpha/include/asm/core_mcpcia.h | 6 +- arch/alpha/include/asm/core_t2.h | 2 +- arch/alpha/include/asm/io.h | 12 ++-- arch/alpha/include/asm/io_trivial.h | 16 ++--- arch/alpha/include/asm/jensen.h | 2 +- arch/alpha/include/asm/machvec.h | 6 +- arch/alpha/kernel/core_marvel.c | 2 +- arch/alpha/kernel/io.c | 12 ++-- arch/arc/plat-axs10x/axs10x.c | 4 +- arch/parisc/include/asm/io.h | 4 +- arch/parisc/lib/iomap.c | 72 +++++++++---------- arch/powerpc/kernel/iomap.c | 28 ++++---- arch/sh/kernel/iomap.c | 22 +++--- drivers/gpu/drm/mgag200/mgag200_drv.h | 4 +- drivers/gpu/drm/nouveau/nouveau_bo.c | 2 +- drivers/media/platform/fsl-viu.c | 2 +- drivers/net/wireless/ath/ath5k/ahb.c | 10 +-- .../realtek/rtl818x/rtl8180/rtl8180.h | 6 +- drivers/ntb/hw/intel/ntb_hw_gen1.c | 2 +- drivers/ntb/hw/intel/ntb_hw_gen3.h | 2 +- drivers/ntb/hw/intel/ntb_hw_intel.h | 2 +- drivers/virtio/virtio_pci_modern.c | 6 +- include/asm-generic/iomap.h | 28 ++++---- include/linux/io-64-nonatomic-hi-lo.h | 4 +- include/linux/io-64-nonatomic-lo-hi.h | 4 +- lib/iomap.c | 30 ++++---- 30 files changed, 156 insertions(+), 156 deletions(-)