From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 B76884AED4; Mon, 1 Apr 2024 16:43:46 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711989826; cv=none; b=ZfZf6vqOSkWON2TSmzhzayCOYqK+UYj0VGYN+C1w0pzlWy80upjJKgUNjgNk5JWDV4zTdJXb1/ditKF7JZfgD8K8EBochNg0w6e+oHHEBVlbwPJn4Ko0k7qfbSMixrZfS/XoAc4DOSdjNgNsCAwVly+G2310cIxQfP9BrBgO0Jw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711989826; c=relaxed/simple; bh=1bKizJToSKSQEZsa/8DxrytX+CV6hA1q/VKlIqtNUCg=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=HyAe/+sStdf5avzrbVPoVjgxOUppxQf7NO+OpBkcsyGt8JZU+rnrL92xMz900e1QkQkCpo9DajSHjVm4e7AtMg27CJ1LGMXCKpdMY3CBFuBv4pjFL189i725RsgxgFtfP6a/6A3ZfSNArXwO5ab8mC/jReiR+gaERCQjDEaAJ24= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=Gs0c+/zA; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="Gs0c+/zA" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 24D14C433C7; Mon, 1 Apr 2024 16:43:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1711989826; bh=1bKizJToSKSQEZsa/8DxrytX+CV6hA1q/VKlIqtNUCg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Gs0c+/zAlFMbQq9AH8b+oJjhUS8760+hwaEpd7gOolv6PLAr2CGD0r4rd40EInb18 ZkLTIojiG1ecR3JDsr/sUm22b4W0XVNYmX3mxT3B3n5GgY07KXDvK097DpxQCGfshc SKehn296VOFOP1ZmbwflHu2e8JXutWPs4zEmWN6Q= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Marek Szyprowski , "Christoph Lameter (Ampere)" , Dhruva Gole , Viresh Kumar , Sasha Levin Subject: [PATCH 6.6 165/396] cpufreq: dt: always allocate zeroed cpumask Date: Mon, 1 Apr 2024 17:43:34 +0200 Message-ID: <20240401152552.859851712@linuxfoundation.org> X-Mailer: git-send-email 2.44.0 In-Reply-To: <20240401152547.867452742@linuxfoundation.org> References: <20240401152547.867452742@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.6-stable review patch. If anyone has any objections, please let me know. ------------------ From: Marek Szyprowski [ Upstream commit d2399501c2c081eac703ca9597ceb83c7875a537 ] Commit 0499a78369ad ("ARM64: Dynamically allocate cpumasks and increase supported CPUs to 512") changed the handling of cpumasks on ARM 64bit, what resulted in the strange issues and warnings during cpufreq-dt initialization on some big.LITTLE platforms. This was caused by mixing OPPs between big and LITTLE cores, because OPP-sharing information between big and LITTLE cores is computed on cpumask, which in turn was not zeroed on allocation. Fix this by switching to zalloc_cpumask_var() call. Fixes: dc279ac6e5b4 ("cpufreq: dt: Refactor initialization to handle probe deferral properly") CC: stable@vger.kernel.org # v5.10+ Signed-off-by: Marek Szyprowski Reviewed-by: Christoph Lameter (Ampere) Reviewed-by: Dhruva Gole Signed-off-by: Viresh Kumar Signed-off-by: Sasha Levin --- drivers/cpufreq/cpufreq-dt.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/cpufreq/cpufreq-dt.c b/drivers/cpufreq/cpufreq-dt.c index 8bd6e5e8f121c..2d83bbc65dd0b 100644 --- a/drivers/cpufreq/cpufreq-dt.c +++ b/drivers/cpufreq/cpufreq-dt.c @@ -208,7 +208,7 @@ static int dt_cpufreq_early_init(struct device *dev, int cpu) if (!priv) return -ENOMEM; - if (!alloc_cpumask_var(&priv->cpus, GFP_KERNEL)) + if (!zalloc_cpumask_var(&priv->cpus, GFP_KERNEL)) return -ENOMEM; cpumask_set_cpu(cpu, priv->cpus); -- 2.43.0