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,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 9DAC4C282C4 for ; Tue, 12 Feb 2019 10:39:36 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 671C220818 for ; Tue, 12 Feb 2019 10:39:36 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=bgdev-pl.20150623.gappssmtp.com header.i=@bgdev-pl.20150623.gappssmtp.com header.b="mLvKm8fa" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729128AbfBLKjf (ORCPT ); Tue, 12 Feb 2019 05:39:35 -0500 Received: from mail-wm1-f68.google.com ([209.85.128.68]:55569 "EHLO mail-wm1-f68.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729101AbfBLKjd (ORCPT ); Tue, 12 Feb 2019 05:39:33 -0500 Received: by mail-wm1-f68.google.com with SMTP id r17so2326108wmh.5 for ; Tue, 12 Feb 2019 02:39:32 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bgdev-pl.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=hwmA55py1DDIb9fQ+5X5dpksNWX0bjdVZC1l1Y9UfNg=; b=mLvKm8faBmaSZPHhItRIrOvDCDbvaF74ATZ9/dNkb0nIZKKBbdor5rGls7iviDTPQf 9nf/8vXwNbd6qj1fLcOyn01tHibzGG6oelnOQ5JAuEbLnHVcFrDWQ5JBiZevuiAj5QxS 6cVh3EtDraj+vfcOQtkK9FRYQooStyuElkq9Pwfd0t3LPOXFe4CgdulB7xwYPUkYzsVr boZd4X1emt2mfICY/z+e/cFlSt4BzNRZ+j7/4lCLilOUfNUGSGEt723bUUzDtDYQ98M0 Tow2dQDvp+5DsjM8EbCMeOptuDhhPwmUimYeBGGxLYXvNjFV5uh5Q1Hm2g61mzfAVA0p a7Vw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=hwmA55py1DDIb9fQ+5X5dpksNWX0bjdVZC1l1Y9UfNg=; b=URw2NsAY/ozx/Cih3kAC9t9nkupFeRC+p8M8Bddb5qjy6CZ/30y1+8x4JIslKXyOtX nLBHI0T0H1qIvS/GezYSpGeVPgzSWObMfIaNuEajzDTEIQGph1mK/kIrxWWKbC4oq6VY 1XoHnYsT7m6iI0py5aMVItQ1OxLLO28D5mB5SWCJvbLecVa7+yX81cJq/jqF23zummVa Ps8yXx1xG9Mzv3G8F6Sw6G1tbKeaSb9PTvAI80tCEq5sNHDZyvI96LSkEt3YaBLmhQ/d sVvu516hdmMvFiFQHojr3/p0VMCGWImMjf9JGKh4MML52cEZshcCOvX6BMC2IxBhofuN fghw== X-Gm-Message-State: AHQUAuYrF4aX8nRUJkk5ko45lBPpIzA7QCa1YznflGgYLnmCrtcwyN+d Y8KN3XXQld8p4jFeMP7JfqiFkw== X-Google-Smtp-Source: AHgI3Ibx+3G3YCOQ/z6DfdWlABUsf04RZB2zekk9W4VeB74BGyH7ukL7QCGXdthZbAf/BelDZCV3FQ== X-Received: by 2002:a1c:7710:: with SMTP id t16mr2232819wmi.81.1549967971406; Tue, 12 Feb 2019 02:39:31 -0800 (PST) Received: from localhost.localdomain (aputeaux-684-1-38-32.w90-86.abo.wanadoo.fr. [90.86.93.32]) by smtp.gmail.com with ESMTPSA id c14sm3708656wrn.12.2019.02.12.02.39.30 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 12 Feb 2019 02:39:30 -0800 (PST) From: Bartosz Golaszewski To: 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 v3 30/37] ARM: davinci: cp-intc: request the memory region before remapping it Date: Tue, 12 Feb 2019 11:38:28 +0100 Message-Id: <20190212103835.7768-31-brgl@bgdev.pl> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190212103835.7768-1-brgl@bgdev.pl> References: <20190212103835.7768-1-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 it's not been requested by another user. Signed-off-by: Bartosz Golaszewski --- arch/arm/mach-davinci/cp_intc.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/arch/arm/mach-davinci/cp_intc.c b/arch/arm/mach-davinci/cp_intc.c index f56a4275083f..6ab56af3be6b 100644 --- a/arch/arm/mach-davinci/cp_intc.c +++ b/arch/arm/mach-davinci/cp_intc.c @@ -164,6 +164,15 @@ davinci_cp_intc_do_init(const struct davinci_cp_intc_config *config, { unsigned int num_regs = BITS_TO_LONGS(config->num_irqs); int offset, irq_base; + void __iomem *req; + + 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 -EBUSY; + } davinci_cp_intc_base = ioremap(config->reg.start, resource_size(&config->reg)); -- 2.20.1