On 19. 7. 8. 오전 7:32, Dmitry Osipenko wrote: > Potentially very high boosting could cause an integer overflow for a > highly clocked memory after conversion to MHz. > > Signed-off-by: Dmitry Osipenko <digetx@xxxxxxxxx> > --- > 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 2f59c78930bd..0de1efdaabf4 100644 > --- a/drivers/devfreq/tegra30-devfreq.c > +++ b/drivers/devfreq/tegra30-devfreq.c > @@ -460,6 +460,7 @@ 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); Did you meet this corner case? If have to change it, you better to use 'tegra->max_freq' as following: min(target_freq, tegra->max_freq); > target_freq = tegra_actmon_account_cpu_freq(tegra, dev, target_freq); > > return target_freq; > -- Best Regards, Chanwoo Choi Samsung Electronics
