[CPUFREQ] Fix ondemand to not request targets outside policy limits
Dominik said: target_freq cannot be below policy->min or above policy->max. If it were, the whole cpufreq subsystem is broken. But (answer): I think the "ondemand" governor can ask for a target frequency that is below policy->min. ... A patch such as below may be needed to sanitize the target frequency requested by "ondemand". The "conservative" governor already has this check: Signed-off-by: Thomas Renninger <trenn@suse.de> Signed-off-by: Dave Jones <davej@redhat.com> # diff -bur x/drivers/cpufreq/cpufreq_ondemand.c.orig y/drivers/cpufreq/cpufreq_ondemand.c
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@ -554,6 +554,9 @@ static void dbs_check_cpu(struct cpu_dbs_info_s *this_dbs_info)
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(dbs_tuners_ins.up_threshold -
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dbs_tuners_ins.down_differential);
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if (freq_next < policy->min)
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freq_next = policy->min;
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if (!dbs_tuners_ins.powersave_bias) {
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__cpufreq_driver_target(policy, freq_next,
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CPUFREQ_RELATION_L);
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