[PATCH v6 08/19] PM / devfreq: tegra30: Ensure that target freq won't overflow

From: Dmitry Osipenko
Date: Sun Aug 11 2019 - 17:25:42 EST


We already had few integer overflow bugs, let's limit the freq for
consistency.

Signed-off-by: Dmitry Osipenko <digetx@xxxxxxxxx>
---
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