From nobody Sat Nov 30 02:37:28 2024 Received: from mailgw02.mediatek.com (unknown [210.61.82.184]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 613E61CF7B6; Fri, 8 Nov 2024 06:39:55 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=210.61.82.184 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1731047997; cv=none; b=DxZRuqbEsA3dT7IAq7UjVSxSXxjWpnJ+jKvU9Fm24gEXQVMlFAYFAPNFwiTYRQg6jeHTDJkbsxTdNd383IH0BZr5Lzh6nKDoBUumk6j/J/0WDBvHk770CcZ+erMlCQhfHv5Es3C1WxG6aLo4+XguYXtKBr//nFNGQYGPT/qndmQ= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1731047997; c=relaxed/simple; bh=ueT+ccky2jPcZMmNDBe7fttcASXZUBPn8YOGTnygoSM=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=CRcHMC5ZCsXpMMgI5uO1BsS6MPgC99nTG7YhvnF8s1/xeBeQUkJ+bFI9HNQy+82eaxY697mmSlLjLGdzm7Zv4zegph5eST+wK+zJldgeQhwigiuJxcTqAd0b9oiiGskXmsDI+EwSHFIjoVOdNT1rIXS4jmg6yzdbUjcxAue1Ye0= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=mediatek.com; spf=pass smtp.mailfrom=mediatek.com; dkim=pass (1024-bit key) header.d=mediatek.com header.i=@mediatek.com header.b=B0te3za8; arc=none smtp.client-ip=210.61.82.184 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=mediatek.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=mediatek.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=mediatek.com header.i=@mediatek.com header.b="B0te3za8" X-UUID: 40c9f3049d9c11efbd192953cf12861f-20241108 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Type:MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:CC:To:From; bh=HUfXCWBMH14NMLsYilX9Z6Z+VvsztsPB6r7RvqOT/YM=; b=B0te3za8+DxBtynEL5rppTJ/gmGnsjvFEu0LoHFVeWFOLqOfsUIDTLMe6n8s1A4DaWx7dHxAs5S64UUxrnbtzeymHniu31g34hesUYooZ6XuvlMpSqlBgKV/qvx3FmKqqADkXBIAHLJ6tLtReAyYp0Qg9nINMzkktaJgdfp8UZA=; X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.42,REQID:5695cee6-98fc-4df6-8ec1-4a44534a3c04,IP:0,U RL:0,TC:0,Content:0,EDM:0,RT:0,SF:0,FILE:0,BULK:0,RULE:Release_Ham,ACTION: release,TS:0 X-CID-META: VersionHash:b0fcdc3,CLOUDID:a266d31b-4f51-4e1d-bb6a-1fd98b6b19d2,B ulkID:nil,BulkQuantity:0,Recheck:0,SF:102,TC:nil,Content:0,EDM:-3,IP:nil,U RL:0,File:nil,RT:nil,Bulk:nil,QS:nil,BEC:nil,COL:0,OSI:0,OSA:0,AV:0,LES:1, SPR:NO,DKR:0,DKP:0,BRR:0,BRE:0,ARC:0 X-CID-BVR: 0,NGT X-CID-BAS: 0,NGT,0,_ X-CID-FACTOR: TF_CID_SPAM_SNR X-UUID: 40c9f3049d9c11efbd192953cf12861f-20241108 Received: from mtkmbs11n1.mediatek.inc [(172.21.101.185)] by mailgw02.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 1064750681; Fri, 08 Nov 2024 14:39:49 +0800 Received: from mtkmbs11n1.mediatek.inc (172.21.101.185) by mtkmbs11n1.mediatek.inc (172.21.101.185) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.26; Fri, 8 Nov 2024 14:39:49 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkmbs11n1.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.1118.26 via Frontend Transport; Fri, 8 Nov 2024 14:39:49 +0800 From: Mark Tseng To: "Rafael J . Wysocki" , Viresh Kumar , MyungJoo Ham , Kyungmin Park , Chanwoo Choi , Matthias Brugger , AngeloGioacchino Del Regno CC: , , , , , Subject: [PATCH v2 4/4] cpufreq: mediatek: data safety protect Date: Fri, 8 Nov 2024 14:39:42 +0800 Message-ID: <20241108063942.19744-5-chun-jen.tseng@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20241108063942.19744-1-chun-jen.tseng@mediatek.com> References: <20241108063942.19744-1-chun-jen.tseng@mediatek.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" get policy data in global lock session avoid get wrong data. Signed-off-by: Mark Tseng --- drivers/cpufreq/mediatek-cpufreq.c | 15 ++++++++++----- 1 file changed, 10 insertions(+), 5 deletions(-) diff --git a/drivers/cpufreq/mediatek-cpufreq.c b/drivers/cpufreq/mediatek-= cpufreq.c index 3369bdd9a348..3303b6d72ea7 100644 --- a/drivers/cpufreq/mediatek-cpufreq.c +++ b/drivers/cpufreq/mediatek-cpufreq.c @@ -201,11 +201,11 @@ static bool is_ccifreq_ready(struct mtk_cpu_dvfs_info= *info) static int mtk_cpufreq_set_target(struct cpufreq_policy *policy, unsigned int index) { - struct cpufreq_frequency_table *freq_table =3D policy->freq_table; - struct clk *cpu_clk =3D policy->clk; - struct clk *armpll =3D clk_get_parent(cpu_clk); - struct mtk_cpu_dvfs_info *info =3D policy->driver_data; - struct device *cpu_dev =3D info->cpu_dev; + struct cpufreq_frequency_table *freq_table; + struct clk *cpu_clk; + struct clk *armpll; + struct mtk_cpu_dvfs_info *info; + struct device *cpu_dev; struct dev_pm_opp *opp; long freq_hz, pre_freq_hz; int vproc, pre_vproc, inter_vproc, target_vproc, ret; @@ -213,6 +213,11 @@ static int mtk_cpufreq_set_target(struct cpufreq_polic= y *policy, =20 mutex_lock(&mtk_policy_lock); =20 + freq_table =3D policy->freq_table; + cpu_clk =3D policy->clk; + armpll =3D clk_get_parent(cpu_clk); + info =3D policy->driver_data; + cpu_dev =3D info->cpu_dev; inter_vproc =3D info->intermediate_voltage; pre_freq_hz =3D policy->cur * 1000; =20 --=20 2.45.2