From: Marcelo Tosatti mtosatti@redhat.com
commit 36fcb4292473cb9c9ce7706d038bcf0eda5cabeb upstream.
Commit 259231a04561 ("cpuidle: add poll_limit_ns to cpuidle_device structure") changed, by mistake, the target residency from the first available sleep state to the last available sleep state (which should be longer).
This might cause excessive polling.
Fixes: 259231a04561 ("cpuidle: add poll_limit_ns to cpuidle_device structure") Signed-off-by: Marcelo Tosatti mtosatti@redhat.com Cc: 5.4+ stable@vger.kernel.org # 5.4+ Signed-off-by: Rafael J. Wysocki rafael.j.wysocki@intel.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/cpuidle/cpuidle.c | 1 + 1 file changed, 1 insertion(+)
--- a/drivers/cpuidle/cpuidle.c +++ b/drivers/cpuidle/cpuidle.c @@ -384,6 +384,7 @@ u64 cpuidle_poll_time(struct cpuidle_dri continue;
limit_ns = (u64)drv->states[i].target_residency * NSEC_PER_USEC; + break; }
dev->poll_limit_ns = limit_ns;