[PATCH 4.9 53/61] cpufreq: powernv: Fix hardlockup due to synchronous smp_call in timer interrupt

4.9-stable review patch. If anyone has any objections, please let me know. -- From: Shilpasri G Bhat commit c0f7f5b6c69107ca92909512533e70258ee19188 upstream. gpstate_timer_handler() uses synchronous smp_call to set the pstate on the requested

[PATCH 4.9 53/61] cpufreq: powernv: Fix hardlockup due to synchronous smp_call in timer interrupt

4.9-stable review patch. If anyone has any objections, please let me know. -- From: Shilpasri G Bhat commit c0f7f5b6c69107ca92909512533e70258ee19188 upstream. gpstate_timer_handler() uses synchronous smp_call to set the pstate on the requested core. This causes the below hard