From patchwork Thu Jul 9 07:28:37 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Krzysztof Kozlowski X-Patchwork-Id: 11653679 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 1A77014E3 for ; Thu, 9 Jul 2020 07:29:32 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 03B832078D for ; Thu, 9 Jul 2020 07:29:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1594279772; bh=QYSGAmbCCxKq7PeNXIOIYLZvnbzZZuWLOEUVbks30dw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=oyYefenGU2P7YUDpOa3O2hzr5dVgxzXPnY171kSeF/NcWQ9SQnE1shcnzZDH526c8 0GF7wJfzMXzUcZz7R3+0TXiEFA8GrnCUfEup2TCKzqvEWOcm7YMetd7VUJmLn1DJYb RaZrHI3tYsfItzhIaC/FUUFPnSqlrFCkSIae4xz8= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726600AbgGIH3Q (ORCPT ); Thu, 9 Jul 2020 03:29:16 -0400 Received: from mail.kernel.org ([198.145.29.99]:42590 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726006AbgGIH3O (ORCPT ); Thu, 9 Jul 2020 03:29:14 -0400 Received: from kozik-lap.mshome.net (unknown [194.230.155.195]) (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 50C8120786; Thu, 9 Jul 2020 07:29:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1594279754; bh=QYSGAmbCCxKq7PeNXIOIYLZvnbzZZuWLOEUVbks30dw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=1Vq5Rv+mJ7JMcX+20xViqkzmfdNd9iFeiU157MTdQIU4+8aph9P1UPl4B25DGwWL5 hrvyew5GekUMVukmUmyVH1Uef1LLdOT9JBeKJZeXTdMus5SGdjIAF3SIv5q2RYQIiw p9JIqnDhZP52EWTpOYsrInFFCFBgKwGPUHdFeSTk= From: Krzysztof Kozlowski To: Richard Henderson , Ivan Kokshaysky , Matt Turner , "James E.J. Bottomley" , Helge Deller , Michael Ellerman , Benjamin Herrenschmidt , Paul Mackerras , Yoshinori Sato , Rich Felker , Kalle Valo , "David S. Miller" , Jakub Kicinski , Dave Jiang , Jon Mason , Allen Hubbe , "Michael S. Tsirkin" , Jason Wang , Arnd Bergmann , Geert Uytterhoeven , Andrew Morton , linux-alpha@vger.kernel.org, linux-kernel@vger.kernel.org, linux-parisc@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-sh@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: [PATCH v3 4/4] virtio: pci: Constify ioreadX() iomem argument (as in generic implementation) Date: Thu, 9 Jul 2020 09:28:37 +0200 Message-Id: <20200709072837.5869-5-krzk@kernel.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200709072837.5869-1-krzk@kernel.org> References: <20200709072837.5869-1-krzk@kernel.org> Sender: linux-sh-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-sh@vger.kernel.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 --- drivers/virtio/virtio_pci_modern.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/virtio/virtio_pci_modern.c b/drivers/virtio/virtio_pci_modern.c index db93cedd262f..90eff165a719 100644 --- a/drivers/virtio/virtio_pci_modern.c +++ b/drivers/virtio/virtio_pci_modern.c @@ -27,16 +27,16 @@ * method, i.e. 32-bit accesses for 32-bit fields, 16-bit accesses * for 16-bit fields and 8-bit accesses for 8-bit fields. */ -static inline u8 vp_ioread8(u8 __iomem *addr) +static inline u8 vp_ioread8(const u8 __iomem *addr) { return ioread8(addr); } -static inline u16 vp_ioread16 (__le16 __iomem *addr) +static inline u16 vp_ioread16 (const __le16 __iomem *addr) { return ioread16(addr); } -static inline u32 vp_ioread32(__le32 __iomem *addr) +static inline u32 vp_ioread32(const __le32 __iomem *addr) { return ioread32(addr); }