Messages in this thread Patch in this message | | | From | Dmitry Osipenko <> | Subject | [PATCH v2 14/17] PM / devfreq: tegra30: Ensure that target freq won't overflow | Date | Wed, 26 Jun 2019 04:32:48 +0300 |
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Potentially very high boosting could cause an integer overflow for a highly clocked memory after conversion to MHz.
Signed-off-by: Dmitry Osipenko <digetx@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 d85de0e3dce0..1dcc2d2fa9e0 100644 --- a/drivers/devfreq/tegra30-devfreq.c +++ b/drivers/devfreq/tegra30-devfreq.c @@ -458,6 +458,7 @@ 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
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