From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dmitry Osipenko Subject: [PATCH v6 08/19] PM / devfreq: tegra30: Ensure that target freq won't overflow Date: Mon, 12 Aug 2019 00:23:04 +0300 Message-ID: <20190811212315.12689-9-digetx@gmail.com> References: <20190811212315.12689-1-digetx@gmail.com> Mime-Version: 1.0 Content-Transfer-Encoding: 8bit Return-path: In-Reply-To: <20190811212315.12689-1-digetx@gmail.com> Sender: linux-kernel-owner@vger.kernel.org To: Thierry Reding , MyungJoo Ham , Kyungmin Park , Chanwoo Choi , Jonathan Hunter , Tomeu Vizoso Cc: linux-pm@vger.kernel.org, linux-tegra@vger.kernel.org, linux-kernel@vger.kernel.org List-Id: linux-tegra@vger.kernel.org We already had few integer overflow bugs, let's limit the freq for consistency. Signed-off-by: Dmitry Osipenko --- drivers/devfreq/tegra30-devfreq.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/devfreq/tegra30-devfreq.c b/drivers/devfreq/tegra30-devfreq.c index 70dce58212a4..ca499368ee81 100644 --- a/drivers/devfreq/tegra30-devfreq.c +++ b/drivers/devfreq/tegra30-devfreq.c @@ -430,7 +430,7 @@ static unsigned long actmon_update_target(struct tegra_devfreq *tegra, target_freq = dev->avg_count / ACTMON_SAMPLING_PERIOD + dev->boost_freq; target_freq = tegra_actmon_account_cpu_freq(tegra, dev, target_freq); - return target_freq; + return min(target_freq, tegra->max_freq); } static irqreturn_t actmon_thread_isr(int irq, void *data) -- 2.22.0