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Commit f407a08b authored by Alexander Clouter's avatar Alexander Clouter Committed by Dave Jones
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[CPUFREQ] conservative: fix dbs_cpufreq_notifier so freq is not locked 



When someone added the dbs_cpufreq_notifier section to the governor the
code ended up causing the frequency to only fall.  This is because
requested_freq is tinkered with and that should only modified if it has
an invlaid value due to changes in the available frequency ranges

This should fix #10055.

Signed-off-by: default avatarAlexander Clouter <alex@digriz.org.uk>
Signed-off-by: default avatarDave Jones <davej@redhat.com>
parent 11a80a9c

drivers/cpufreq/cpufreq_conservative.c

+12 −1
Original line number Diff line number Diff line
@@ -137,9 +137,20 @@ dbs_cpufreq_notifier(struct notifier_block *nb, unsigned long val, 
	struct cpu_dbs_info_s *this_dbs_info = &per_cpu(cpu_dbs_info,

							freq->cpu);



	struct cpufreq_policy *policy;



	if (!this_dbs_info->enable)

		return 0;



	policy = this_dbs_info->cur_policy;



	/*

	 * we only care if our internally tracked freq moves outside

	 * the 'valid' ranges of freqency available to us otherwise

	 * we do not change it

	*/

	if (this_dbs_info->requested_freq > policy->max

			|| this_dbs_info->requested_freq < policy->min)

		this_dbs_info->requested_freq = freq->new;



	return 0;