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23 October 2021, 00:29:24 UTC
Revision 5a7e56a5d29071bcccd947dee6e3b9f8e4eb3309 authored by Viresh Kumar on 04 March 2014, 03:44:00 UTC, committed by Rafael J. Wysocki on 06 March 2014, 12:25:29 UTC 
cpufreq: Initialize policy before making it available for others to use
 
Policy must be fully initialized before it is being made available
for use by others. Otherwise cpufreq_cpu_get() would be able to grab
a half initialized policy structure that might not have affected_cpus
(for example) populated. Then, anybody accessing those fields will get
a wrong value and that will lead to unpredictable results.

In order to fix this, do all the necessary initialization before we
make the policy structure available via cpufreq_cpu_get(). That will
guarantee that any code accessing fields of the policy will get
correct data from them.

Reported-by: Saravana Kannan <skannan@codeaurora.org>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
[rjw: Changelog]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
1 parent 999976e
History
Tip revision: 5a7e56a5d29071bcccd947dee6e3b9f8e4eb3309 authored by Viresh Kumar on 04 March 2014, 03:44:00 UTC
cpufreq: Initialize policy before making it available for others to use
Tip revision: 5a7e56a
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