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cpuidle: use first valid target residency as poll time

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Commit 259231a045 ("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: 259231a045 ("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>
This commit is contained in:
Marcelo Tosatti 2019-12-06 13:07:41 -02:00 committed by Rafael J. Wysocki
parent e42617b825
commit 36fcb42924
1 changed files with 1 additions and 0 deletions
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drivers/cpuidle/cpuidle.c
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@ -382,6 +382,7 @@ u64 cpuidle_poll_time(struct cpuidle_driver *drv,
continue; continue;
limit_ns = (u64)drv->states[i].target_residency_ns; limit_ns = (u64)drv->states[i].target_residency_ns;
break;
} }
dev->poll_limit_ns = limit_ns; dev->poll_limit_ns = limit_ns;