On Saturday, August 03, 2013 06:57:11 PM Viresh Kumar wrote:
On 3 August 2013 17:38, Rafael J. Wysocki rjw@sisk.pl wrote:
On Saturday, August 03, 2013 05:19:26 PM Viresh Kumar wrote:
Governor's owner refcount usage was broken. We should increment refcount only when CPUFREQ_GOV_POLICY_INIT event has come and should decrement only if CPUFREQ_GOV_POLICY_EXIT has come.
Lets fix it.
OK, and what happens if we don't fix it?
What about this changelog:
Subject: [PATCH 08/10] cpufreq: Fix broken usage of governor->owner's refcount
Governor's owner refcount usage was broken. We should increment refcount only when CPUFREQ_GOV_POLICY_INIT event has come and should decrement only if CPUFREQ_GOV_POLICY_EXIT has come.
Currently there can be situations where governor is in use but we have allowed it to be unloaded. And that may cause in undefined behavior.
"it to be unloaded which may result in undefined behavior."
Lets fix it.
Signed-off-by: Viresh Kumar viresh.kumar@linaro.org
Apart from the above looks good.
Thanks, Rafael