From patchwork Tue Jul 1 18:43:26 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Liviu Dudau X-Patchwork-Id: 4461461 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id EED529F39B for ; Tue, 1 Jul 2014 18:46:51 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 49093203DB for ; Tue, 1 Jul 2014 18:46:50 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 7274D20222 for ; Tue, 1 Jul 2014 18:46:49 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1X232d-0006jk-Sf; Tue, 01 Jul 2014 18:44:31 +0000 Received: from fw-tnat.cambridge.arm.com ([217.140.96.21] helo=cam-smtp0.cambridge.arm.com) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1X232R-0006ae-FQ for linux-arm-kernel@lists.infradead.org; Tue, 01 Jul 2014 18:44:20 +0000 Received: from e106497-lin.cambridge.arm.com (e106497-lin.cambridge.arm.com [10.1.195.170]) by cam-smtp0.cambridge.arm.com (8.13.8/8.13.8) with ESMTP id s61IhYJV027921; Tue, 1 Jul 2014 19:43:37 +0100 From: Liviu Dudau To: linux-pci , Bjorn Helgaas , Catalin Marinas , Will Deacon , Benjamin Herrenschmidt , Arnd Bergmann , linaro-kernel , Tanmay Inamdar , Grant Likely , Sinan Kaya , Jingoo Han , Kukjin Kim , Suravee Suthikulanit Subject: [PATCH v8 1/9] Fix ioport_map() for !CONFIG_GENERIC_IOMAP cases. Date: Tue, 1 Jul 2014 19:43:26 +0100 Message-Id: <1404240214-9804-2-git-send-email-Liviu.Dudau@arm.com> X-Mailer: git-send-email 2.0.0 In-Reply-To: <1404240214-9804-1-git-send-email-Liviu.Dudau@arm.com> References: <1404240214-9804-1-git-send-email-Liviu.Dudau@arm.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20140701_114419_866123_2E526BB8 X-CRM114-Status: UNSURE ( 9.43 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -0.7 (/) Cc: Device Tree ML , LKML , LAKML X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP The inline version of ioport_map() that gets used when !CONFIG_GENERIC_IOMAP is wrong. It returns a mapped (i.e. virtual) address that can start from zero and completely ignores the PCI_IOBASE and IO_SPACE_LIMIT that most architectures that use !CONFIG_GENERIC_MAP define. Signed-off-by: Liviu Dudau Acked-by: Arnd Bergmann Tested-by: Tanmay Inamdar --- include/asm-generic/io.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/asm-generic/io.h b/include/asm-generic/io.h index 975e1cc..2e2161b 100644 --- a/include/asm-generic/io.h +++ b/include/asm-generic/io.h @@ -331,7 +331,7 @@ static inline void iounmap(void __iomem *addr) #ifndef CONFIG_GENERIC_IOMAP static inline void __iomem *ioport_map(unsigned long port, unsigned int nr) { - return (void __iomem *) port; + return (void __iomem *)(PCI_IOBASE + (port & IO_SPACE_LIMIT)); } static inline void ioport_unmap(void __iomem *p)