From patchwork Wed Jan 8 20:05:22 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Krzysztof Kozlowski X-Patchwork-Id: 1219886 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (no SPF record) smtp.mailfrom=lists.infradead.org (client-ip=2607:7c80:54:e::133; helo=bombadil.infradead.org; envelope-from=linux-snps-arc-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="XAoIJWQX"; dkim=fail reason="signature verification failed" (1024-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.b="PY+oqH9c"; dkim-atps=neutral Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:e::133]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 47tKy33HYdz9s29 for ; Thu, 9 Jan 2020 07:06:19 +1100 (AEDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:MIME-Version:List-Subscribe:List-Help: List-Post:List-Archive:List-Unsubscribe:List-Id:References:In-Reply-To: Message-Id:Date:Subject:To:From:Reply-To:Cc:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=96qJ7173ap33OLDuRMMIhBEAp2oNbcWAmgtHCPqIFvI=; b=XAoIJWQX98dGOc FXZDtFqrcyK7xDCuKsUpAvbbAlofMy7B007Js0HGh32i6+WnfAL+4hMx9gDVR5TMG0FAE1tKD3TTa kIxbU+ww0js5G0rfysYywUHCEN13vj2820DU3bd+xJj+fesyyn4mLGmfiS1H/PwF0ebDqexKw36mD X+ZRNsBBnVNjYSS9yA4jXUTB1D2K7utgU2i/Ft0YZbd94QyfYGdoq4TapXOpECWCzr9j6GQ5Xhka5 uimZqbSf1bIfMCGNGYqgz2BWsyD115W2xgM6/IlpsEecIqGxaSNFOPaif35Dn3LMGLnvL9cutXsV0 snlPHcFXHdOJnBjeMOKQ==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1ipHar-00083u-TI; Wed, 08 Jan 2020 20:06:17 +0000 Received: from mail.kernel.org ([198.145.29.99]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1ipHao-00083T-MN for linux-snps-arc@lists.infradead.org; Wed, 08 Jan 2020 20:06:16 +0000 Received: from localhost.localdomain (unknown [83.218.167.187]) (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 A25EE2072A; Wed, 8 Jan 2020 20:06:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578513974; bh=7WvpgXtbKaASLJmny49byk2BAQpG0TKX5P0WxQ0MehA=; h=From:To:Subject:Date:In-Reply-To:References:From; b=PY+oqH9cwJtxC08CiGcYoOkgsuI2NSHiP77prbq2gYqP2xSGczGXIgEMTc/owkVIN vhNFskU2UiqY1/W/YV36+LG4BmVnSUnil/ubLCY4oaijqC6ilW7CTqS70Urax38QKs BFMv93uAqjblGY8osoaDNGPj76OXCck3behyHCR4= 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 , Krzysztof Kozlowski , Geert Uytterhoeven , 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 Subject: [PATCH v2 3/9] ntb: intel: Constify ioreadX() iomem argument (as in generic implementation) Date: Wed, 8 Jan 2020 21:05:22 +0100 Message-Id: <20200108200528.4614-4-krzk@kernel.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200108200528.4614-1-krzk@kernel.org> References: <20200108200528.4614-1-krzk@kernel.org> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200108_120614_769302_6FE650D2 X-CRM114-Status: GOOD ( 12.62 ) X-Spam-Score: -5.2 (-----) X-Spam-Report: SpamAssassin version 3.4.2 on bombadil.infradead.org summary: Content analysis details: (-5.2 points) pts rule name description ---- ---------------------- -------------------------------------------------- -5.0 RCVD_IN_DNSWL_HI RBL: Sender listed at https://www.dnswl.org/, high trust [198.145.29.99 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature -0.0 DKIMWL_WL_HIGH DKIMwl.org - Whitelisted High sender X-BeenThere: linux-snps-arc@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on Synopsys ARC Processors List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-snps-arc" Errors-To: linux-snps-arc-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org The ioreadX() helpers have inconsistent interface. On some architectures void *__iomem address argument is a pointer to const, on some not. Implementations of ioreadX() do not modify the memory under the address so they can be converted to a "const" version for const-safety and consistency among architectures. Signed-off-by: Krzysztof Kozlowski Reviewed-by: Geert Uytterhoeven Acked-by: Dave Jiang --- Changes since v1: 1. Add Geert's review. --- 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 +- 3 files changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/ntb/hw/intel/ntb_hw_gen1.c b/drivers/ntb/hw/intel/ntb_hw_gen1.c index bb57ec239029..9202502a9787 100644 --- a/drivers/ntb/hw/intel/ntb_hw_gen1.c +++ b/drivers/ntb/hw/intel/ntb_hw_gen1.c @@ -1202,7 +1202,7 @@ int intel_ntb_peer_spad_write(struct ntb_dev *ntb, int pidx, int sidx, ndev->peer_reg->spad); } -static u64 xeon_db_ioread(void __iomem *mmio) +static u64 xeon_db_ioread(const void __iomem *mmio) { return (u64)ioread16(mmio); } diff --git a/drivers/ntb/hw/intel/ntb_hw_gen3.h b/drivers/ntb/hw/intel/ntb_hw_gen3.h index 75fb86ca27bb..d1455f24ec99 100644 --- a/drivers/ntb/hw/intel/ntb_hw_gen3.h +++ b/drivers/ntb/hw/intel/ntb_hw_gen3.h @@ -91,7 +91,7 @@ #define GEN3_DB_TOTAL_SHIFT 33 #define GEN3_SPAD_COUNT 16 -static inline u64 gen3_db_ioread(void __iomem *mmio) +static inline u64 gen3_db_ioread(const void __iomem *mmio) { return ioread64(mmio); } diff --git a/drivers/ntb/hw/intel/ntb_hw_intel.h b/drivers/ntb/hw/intel/ntb_hw_intel.h index e071e28bca3f..3c0a5a2da241 100644 --- a/drivers/ntb/hw/intel/ntb_hw_intel.h +++ b/drivers/ntb/hw/intel/ntb_hw_intel.h @@ -102,7 +102,7 @@ struct intel_ntb_dev; struct intel_ntb_reg { int (*poll_link)(struct intel_ntb_dev *ndev); int (*link_is_up)(struct intel_ntb_dev *ndev); - u64 (*db_ioread)(void __iomem *mmio); + u64 (*db_ioread)(const void __iomem *mmio); void (*db_iowrite)(u64 db_bits, void __iomem *mmio); unsigned long ntb_ctl; resource_size_t db_size;