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Thu, 14 Feb 2019 06:53:05 -0800 (PST) From: Bartosz Golaszewski To: Dmitry Torokhov , Sekhar Nori , Kevin Hilman , Thomas Gleixner , Jason Cooper , Marc Zyngier , David Lechner Subject: [PATCH v4 19/37] ARM: davinci: aintc: request memory region before remapping it Date: Thu, 14 Feb 2019 15:52:13 +0100 Message-Id: <20190214145231.8750-20-brgl@bgdev.pl> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190214145231.8750-1-brgl@bgdev.pl> References: <20190214145231.8750-1-brgl@bgdev.pl> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190214_065308_373772_13E0CBDD X-CRM114-Status: GOOD ( 11.43 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Bartosz Golaszewski , linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org From: Bartosz Golaszewski Add a missing call to request_mem_region() before calling ioremap() to make sure the region is not being used by anyone else. Signed-off-by: Bartosz Golaszewski --- arch/arm/mach-davinci/irq.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/arch/arm/mach-davinci/irq.c b/arch/arm/mach-davinci/irq.c index 2afaf19dc46c..2b6943731af9 100644 --- a/arch/arm/mach-davinci/irq.c +++ b/arch/arm/mach-davinci/irq.c @@ -86,9 +86,18 @@ davinci_aintc_handle_irq(struct pt_regs *regs) void __init davinci_aintc_init(const struct davinci_aintc_config *config) { unsigned int irq_off, reg_off, prio, shift; + void __iomem *req; int ret, irq_base; const u8 *prios; + req = request_mem_region(config->reg.start, + resource_size(&config->reg), + "davinci-cp-intc"); + if (!req) { + pr_err("%s: register range busy\n", __func__); + return; + } + davinci_aintc_base = ioremap(config->reg.start, resource_size(&config->reg)); if (!davinci_aintc_base) { -- 2.20.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel From mboxrd@z Thu Jan 1 00:00:00 1970 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=-9.0 required=3.0 tests=DKIMWL_WL_MED,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham 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 3BDE0C10F04 for ; 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Thu, 14 Feb 2019 06:53:05 -0800 (PST) Received: from debian-brgl.home ([2a01:cb1d:af:5b00:6d6c:8493:1ab5:dad7]) by smtp.gmail.com with ESMTPSA id y20sm4181005wra.51.2019.02.14.06.53.04 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 14 Feb 2019 06:53:05 -0800 (PST) From: Bartosz Golaszewski To: Dmitry Torokhov , Sekhar Nori , Kevin Hilman , Thomas Gleixner , Jason Cooper , Marc Zyngier , David Lechner Cc: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Bartosz Golaszewski Subject: [PATCH v4 19/37] ARM: davinci: aintc: request memory region before remapping it Date: Thu, 14 Feb 2019 15:52:13 +0100 Message-Id: <20190214145231.8750-20-brgl@bgdev.pl> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190214145231.8750-1-brgl@bgdev.pl> References: <20190214145231.8750-1-brgl@bgdev.pl> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Bartosz Golaszewski Add a missing call to request_mem_region() before calling ioremap() to make sure the region is not being used by anyone else. Signed-off-by: Bartosz Golaszewski --- arch/arm/mach-davinci/irq.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/arch/arm/mach-davinci/irq.c b/arch/arm/mach-davinci/irq.c index 2afaf19dc46c..2b6943731af9 100644 --- a/arch/arm/mach-davinci/irq.c +++ b/arch/arm/mach-davinci/irq.c @@ -86,9 +86,18 @@ davinci_aintc_handle_irq(struct pt_regs *regs) void __init davinci_aintc_init(const struct davinci_aintc_config *config) { unsigned int irq_off, reg_off, prio, shift; + void __iomem *req; int ret, irq_base; const u8 *prios; + req = request_mem_region(config->reg.start, + resource_size(&config->reg), + "davinci-cp-intc"); + if (!req) { + pr_err("%s: register range busy\n", __func__); + return; + } + davinci_aintc_base = ioremap(config->reg.start, resource_size(&config->reg)); if (!davinci_aintc_base) { -- 2.20.1