From patchwork Wed Feb 19 17:50:04 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Krzysztof Kozlowski X-Patchwork-Id: 11392217 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 37505109A for ; Wed, 19 Feb 2020 17:52:18 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 17AC524672 for ; Wed, 19 Feb 2020 17:52:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1582134738; bh=iR+Ao5saiVxRTvb2au3o6+lrJj/L8pgoUJPaqHXT/tQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=F15YH1fot1bz4QoucvDsi7fAXyfZiwE1rMlAvits+iozlROtdxe58GKDD007ZgMeT ciO9LobELAGYiarUu6ksQG4doghLgRVFA5YvYB0UPFvEKQHw15nGpnMT04jA33MMnJ FmFFwrfFjCIDPps0JCJXLJU3W3MBJknmF/ld9UNY= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726701AbgBSRwL (ORCPT ); Wed, 19 Feb 2020 12:52:11 -0500 Received: from mail.kernel.org ([198.145.29.99]:51468 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726634AbgBSRwK (ORCPT ); Wed, 19 Feb 2020 12:52:10 -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 5864A2467D; Wed, 19 Feb 2020 17:51:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1582134729; bh=iR+Ao5saiVxRTvb2au3o6+lrJj/L8pgoUJPaqHXT/tQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Pw+9ejv73mhY1CR0G17KZh3Lsqa5fiV0O/7QI6gk9U2PDs9MO3ClU02Y37BTLXByA GN0d182iKI80TD2kQnS9S6hifIyWgmQDeqbf00LTAX3OWcGloRKcgGg2t8jDCWtng+ jSpnBjCv8a/bUDQcIr+HVIMFPZ9vmp1qxH03hhJk= 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 6/9] drm/mgag200: Constify ioreadX() iomem argument (as in generic implementation) Date: Wed, 19 Feb 2020 18:50:04 +0100 Message-Id: <20200219175007.13627-7-krzk@kernel.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200219175007.13627-1-krzk@kernel.org> References: <20200219175007.13627-1-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: Thomas Zimmermann --- Changes since v1: 1. Add Thomas' review. --- drivers/gpu/drm/mgag200/mgag200_drv.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/mgag200/mgag200_drv.h b/drivers/gpu/drm/mgag200/mgag200_drv.h index aa32aad222c2..6512b3af4fb7 100644 --- a/drivers/gpu/drm/mgag200/mgag200_drv.h +++ b/drivers/gpu/drm/mgag200/mgag200_drv.h @@ -34,9 +34,9 @@ #define MGAG200FB_CONN_LIMIT 1 -#define RREG8(reg) ioread8(((void __iomem *)mdev->rmmio) + (reg)) +#define RREG8(reg) ioread8(((const void __iomem *)mdev->rmmio) + (reg)) #define WREG8(reg, v) iowrite8(v, ((void __iomem *)mdev->rmmio) + (reg)) -#define RREG32(reg) ioread32(((void __iomem *)mdev->rmmio) + (reg)) +#define RREG32(reg) ioread32(((const void __iomem *)mdev->rmmio) + (reg)) #define WREG32(reg, v) iowrite32(v, ((void __iomem *)mdev->rmmio) + (reg)) #define ATTR_INDEX 0x1fc0