[PATCH v3 14/22] PM / devfreq: tegra30: Ensure that target freq won't overflow

[Dmitry Osipenko]

Potentially very high boosting could cause an integer overflow for a
highly clocked memory after conversion to MHz.

Signed-off-by: Dmitry Osipenko <dig...@gmail.com>
---
 drivers/devfreq/tegra30-devfreq.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/devfreq/tegra30-devfreq.c 
b/drivers/devfreq/tegra30-devfreq.c
index d3e117d827d2..f86593ab3008 100644
--- a/drivers/devfreq/tegra30-devfreq.c
+++ b/drivers/devfreq/tegra30-devfreq.c
@@ -459,6 +459,7 @@ static unsigned long actmon_update_target(struct 
tegra_devfreq *tegra,
 {      unsigned long target_freq;
 
        target_freq = dev->avg_count / ACTMON_SAMPLING_PERIOD + dev->boost_freq;
+       target_freq = min(target_freq, ULONG_MAX / KHZ);
        target_freq = tegra_actmon_account_cpu_freq(tegra, dev, target_freq);
 
        return target_freq;
-- 
2.22.0