Received: by 2002:a05:6a10:5bc5:0:0:0:0 with SMTP id os5csp123621pxb; Fri, 29 Oct 2021 06:59:10 -0700 (PDT) X-Google-Smtp-Source: ABdhPJzRLxzShuCKyi9oyVgx5aWjEdl+ErbbdGiHnhllGbzT97eJL3jpFKjF3LasOYzQPBbHrNTK X-Received: by 2002:a17:906:1382:: with SMTP id f2mr14202140ejc.144.1635515949652; Fri, 29 Oct 2021 06:59:09 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1635515949; cv=none; d=google.com; s=arc-20160816; b=q5Shc5CH9k/t6F/ZY8UY1uDDGMDJEKjRhB2q4nuMyKG4cZXTNgIYWEk9ktcm4FLaxA IdIh5mbCgPA9WAX0V6a6VaK6kVLhH81ZxT75gJVLml+xpb+0T9QF3tlMJQZ8V30x1dQa sKYSWNCwR/6Wb7N3Sf0hxJQ1PjNm8CeG+v5IQPXGzg0prmdD9vWXanQpjBxKc2jFYK41 XgKQ00z0tFkhIYtl3Qe4GDOropW3erBDCWU34aMJVBj/pSjlksuHa5edclnvQp6SkHsf 0vngcPznPV+HnSXqtqtl2/TDNR2mQt+n6rPB9zewBlI33S2X0O4DxH2N5jH+Y7JFzJMC cYZw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:mime-version:message-id:date:subject:cc:to:from; bh=96ZccC/CkhlpXvpQ1LeGRMDVfA5FJTbz32eBDRdfH5Q=; b=yUKU35adujuv2nXqqK0dMI7vHLQzGqaNYZxCGIe4ksY9XC3VdzvaxwruHL3YaY45BV M9WgR5M1Wdu9eFbzxRxsBv/V2N3t1kUGa0y0Zu2TMnghuHT5LGVxN/PzZ/0tAz3L/PsX zMdDS+Nnkb+me8EnLw6lRoXh6XNffd5j3G55HppakKVfkE7s9T3FlI5WDnug5jBet7D8 lauZgkLuYPxBBNuDtMzMaM9yih9hy4mEh7xRfjgVsLjhfPKfACW7Qvr0NSvmXtSxaqQv FxGaqsC43mItSqxayzZ2hRt4EgRYm8iae3pX3cjoatUti0/PX1uplQ85eXabg3Ei45n+ 0LzQ== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=mediatek.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id ms41si7779840ejc.607.2021.10.29.06.58.45; Fri, 29 Oct 2021 06:59:09 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=mediatek.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231594AbhJ2N7I (ORCPT + 99 others); Fri, 29 Oct 2021 09:59:08 -0400 Received: from mailgw02.mediatek.com ([210.61.82.184]:48950 "EHLO mailgw02.mediatek.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S231506AbhJ2N7G (ORCPT ); Fri, 29 Oct 2021 09:59:06 -0400 X-UUID: e0c6f2afee1c4cbcaf0fb7a8492887a0-20211029 X-UUID: e0c6f2afee1c4cbcaf0fb7a8492887a0-20211029 Received: from mtkmbs10n1.mediatek.inc [(172.21.101.34)] by mailgw02.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 1191437217; Fri, 29 Oct 2021 21:56:36 +0800 Received: from mtkmbs10n2.mediatek.inc (172.21.101.183) by mtkmbs10n2.mediatek.inc (172.21.101.183) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.792.3; Fri, 29 Oct 2021 21:56:35 +0800 Received: from mtkswgap22.mediatek.inc (172.21.77.33) by mtkmbs10n2.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.792.3 via Frontend Transport; Fri, 29 Oct 2021 21:56:35 +0800 From: Hector Yuan To: , , , "Rafael J. Wysocki" , Viresh Kumar CC: , , Subject: [PATCH v1] cpufreq: mediatek-hw: Fix double devm_remap in hotplug case Date: Fri, 29 Oct 2021 19:42:22 +0800 Message-ID: <1635507743-17919-1-git-send-email-hector.yuan@mediatek.com> X-Mailer: git-send-email 1.7.9.5 MIME-Version: 1.0 Content-Type: text/plain X-MTK: N Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org When hotpluging policy cpu, cpu policy init will be called multiple times. Unplug CPU7 -> CPU6 -> CPU5 -> CPU4, then plug CPU4 again. In this case, devm_remap will double remap and resource allocate fail. So replace devm_remap to ioremap and release related resources in cpu exit. Hector.Yuan (1): cpufreq: mediatek-hw: Fix double devm_remap in hotplug case drivers/cpufreq/mediatek-cpufreq-hw.c | 33 ++++++++++++++++++++++++++++++--- 1 file changed, 30 insertions(+), 3 deletions(-)