On 1 October 2013 19:03, Sudeep KarkadaNagesha <Sudeep.KarkadaNagesha@xxxxxxx> wrote: > From: Sudeep KarkadaNagesha <sudeep.karkadanagesha@xxxxxxx> > > CPUs are registered as devices and their OPPs can be initialised from > the device tree. Whenever CPUs are hotplugged out, the corresponding > cpu devices are not removed. As a result all their OPPs remain intact > even when they are offlined. > > But when they are hotplugged back-in, the cpufreq along with other cpu > related subsystem gets re-initialised. Since its almost same as secondary > cpu being brought up, no special consideration is taken in the hotplug > path. This may result in cpufreq trying to initialise the OPPs again though > the cpu device already contains the OPPs. > > This patch checks if there exist an OPP list associated with the device, > before attempting to initialise it. > > Cc: Nishanth Menon <nm@xxxxxx> > Cc: "Rafael J. Wysocki" <rjw@xxxxxxx> > Cc: Viresh Kumar <viresh.kumar@xxxxxxxxxx> > Signed-off-by: Sudeep KarkadaNagesha <sudeep.karkadanagesha@xxxxxxx> > --- > drivers/base/power/opp.c | 6 ++++++ > 1 file changed, 6 insertions(+) Acked-by: Viresh Kumar <viresh.kumar@xxxxxxxxxx> -- To unsubscribe from this list: send the line "unsubscribe cpufreq" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
