Re: [PATCH v2 1/1] PM / OPP: Fix get sharing cpus when hotplug is used

["Rafael J. Wysocki" <rjw@rjwysocki.net>]

On Monday, July 24, 2017 02:17:13 PM Viresh Kumar wrote:
> On 21-07-17, 14:13, Waldemar Rymarkiewicz wrote:
> > We fail dev_pm_opp_of_get_sharing_cpus() when possible cpu device does not
> > exist. This can happen on platforms where not all possible CPUs are
> > available at start up ie. hotplugged out. Cpu device is not registered in
> > the system so we are not able to check struct device to set the sharing
> > CPUs bitmask properly.
> > 
> > Example (real use case):
> > 2 physical MIPS cores, 4 VPE, cpu0/2 run Linux and cpu1/3 are not available
> > for Linux at boot up. cpufreq-dt driver + opp v2 fail to register opp_table
> > due to the fact there is no struct device for cpu1 (remains offline at
> > bootup).
> > 
> > To solve the bug, stop using device struct to check device_node. Instead
> > get cpu device_node directly from device tree with of_get_cpu_node().
> > 
> > Signed-off-by: Waldemar Rymarkiewicz <waldemarx.rymarkiewicz@intel.com>
> > ---
> >  drivers/base/power/opp/of.c | 28 +++++++++++++++++-----------
> >  1 file changed, 17 insertions(+), 11 deletions(-)
> 
> Acked-by: Viresh Kumar <viresh.kumar@linaro.org>

I've lost track of this, care to resend?