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 2E569C43381 for ; Thu, 14 Feb 2019 14:53:25 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id F1F5E222DA for ; Thu, 14 Feb 2019 14:53:24 +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="N6LgMgUT" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2501900AbfBNOxX (ORCPT ); Thu, 14 Feb 2019 09:53:23 -0500 Received: from mail-wm1-f66.google.com ([209.85.128.66]:38896 "EHLO mail-wm1-f66.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2439643AbfBNOxU (ORCPT ); Thu, 14 Feb 2019 09:53:20 -0500 Received: by mail-wm1-f66.google.com with SMTP id v26so6384659wmh.3 for ; Thu, 14 Feb 2019 06:53:19 -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=N6LgMgUTg+IZYFt1oItzJT+GVnkquYSUpsRiAzEskKWsnn9GKKLqkfTnLEYL55NRvt nZLAORkcFV6pE5JPEOqswH6+C4rn32KNWjBR02E8bag/gNt1JkL5DuyJ8T32Wz/L29fJ XKPbrErYXUQSpj6vJIQN8g+0wqfhvzlmBdd933MsuyYMqK7++/pPyK1TcFuO4bKuxshm tp9UO+h3u9EovUU6bzJWzLuXEnDyl3mTeOPzzbJ8yuZ0hPjWB73r/7aZFyWS/Ia/FfYI 0mDDzWVdwiGaOLHAFRPJPmXudu6r69OpjBDi9jHMh4sut43DVc3OstmqZs0RneJGQ0VT Sv2Q== 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=PxQwdiE1orqt8PyPZ7wFO0xA6/pCZoY/v30Unhxbgk6XhaxPVzDsN4rw0fD+scKMBF PaqNxzbeYtaK6L9mSEdsceXU6p5az1/OFa3/KITBCyf8w5HlDBTyUk8uftmiTKpW1pHL wwxMUCWaEEpTDKVBESbVrDSoJptzW13fiAn8/nprfZjUqOtXleKcmdwaLj+6W2678oYq tw0UbQRo8rgcJGUB+eItkGcuXMZ3L8PU4M0KS4pesU+yoGbD1MBnWg3t2YBJ2lIquQJq tYNFBl0A7myo+SG0bwX2GiapGVz/E7QjUB3bIbA0xXpyGUbK4qGSWRT93DmotffSN5pV rOTg== X-Gm-Message-State: AHQUAuZ4V8iNCxD/8N9+wjFyk0kna7vAbxelDVFrMbPiefrzXqkLSMOp qN/dPTamfpObkEKGQB0XNBeSzic6FeU= X-Google-Smtp-Source: AHgI3IYYKY32gqWw7jHi8P2zRTLmHHDukiDKhcI8CUc4XNefmXsaDTt25Daz2M+QWuSENJPiLXvSKQ== X-Received: by 2002:a1c:b189:: with SMTP id a131mr3157487wmf.38.1550155998500; Thu, 14 Feb 2019 06:53:18 -0800 (PST) Received: from debian-brgl.home ([2a01:cb1d:af:5b00:6d6c:8493:1ab5:dad7]) by smtp.gmail.com with ESMTPSA id y20sm4181005wra.51.2019.02.14.06.53.17 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 14 Feb 2019 06:53:17 -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 30/37] ARM: davinci: cp-intc: request the memory region before remapping it Date: Thu, 14 Feb 2019 15:52:24 +0100 Message-Id: <20190214145231.8750-31-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 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