cpufreq: exit() callback is optional
The exit() callback is optional and shouldn't be called without checking a valid pointer first. Also, we must clear freq_table pointer even if the exit() callback isn't present. Signed-off-by:Viresh Kumar <viresh.kumar@linaro.org> Fixes: 91a12e91 ("cpufreq: Allow light-weight tear down and bring up of CPUs") Fixes: f339f354 ("cpufreq: Rearrange locking in cpufreq_remove_dev()") Reported-by:
Lizhe <sensor1010@163.com> Signed-off-by:
Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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