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 842F57F465; Mon, 8 Apr 2024 13:13:19 +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=1712581999; cv=none; b=rVJCkktxoL+fiQkPQx+rG2hD6AP0w2MR5jc7OBHTqN4jMfEReslS3etMQHKKbpIjjqTti36+VtyIk/G+lnoQ2bc3JSxj+fWYrX9e7bY3QOtgIOtFmPaAyk6uxeU9UeRXazLtb1eEWalz7/XBXFbX73au6GYQ48TaqZFBIrRZPW0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1712581999; c=relaxed/simple; bh=otvRA00S5e8zQFnBTH9saAuS8E8uxNmxDIoP298utZ0=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=XXyDmpli9QeJAiJlK+JwNQWJy+ABai8V2oxPajzvr0alRggC5lUKcmMWDwpPWDX/llQF9r+ugpsKpuZ4bMCBV0DKxQFOZf7bjxrmYIJDrukZdkd5Co5VNeSXDmxfzW90dsI4gGbgom54bhz/pQBnu19J0WHqI5HFtuKHyhxo4lc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=bflZEyp1; 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="bflZEyp1" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 03A00C433F1; Mon, 8 Apr 2024 13:13:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1712581999; bh=otvRA00S5e8zQFnBTH9saAuS8E8uxNmxDIoP298utZ0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=bflZEyp1lOKnNo29NyAyGVERf/6NZGG6Ib9IRnIry1l0xYisJLWTwQr98vRG08Ies ccoYJkwLx+H5Ff4TVZuMvRwTEB7pYvxA9Cl/sHJmhnVrcqQXeTz6BtAHq7aVuZEgzz bpzoCwqkC0Oi1P0JdviXMlsD4Ia/NCFOPuEdBqXY= 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 5.15 103/690] cpufreq: dt: always allocate zeroed cpumask Date: Mon, 8 Apr 2024 14:49:29 +0200 Message-ID: <20240408125403.231752040@linuxfoundation.org> X-Mailer: git-send-email 2.44.0 In-Reply-To: <20240408125359.506372836@linuxfoundation.org> References: <20240408125359.506372836@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 5.15-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 8fcaba541539b..1bfdfa7e25c17 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