[PATCH-next v2 2/2] cpufreq: powernv: del_timer_sync when global and local pstate are equal

Akshay Adiga akshay.adiga at linux.vnet.ibm.com
Wed May 4 01:19:36 AEST 2016

When global and local pstate are equal in a powernv_target_index() call,
we don't queue a timer. But we may have timer already queued for future.
This could cause the timer to fire one additional time for no use.

Signed-off-by: Akshay Adiga <akshay.adiga at linux.vnet.ibm.com>
Patch is based on Rafael's linux-next
 drivers/cpufreq/powernv-cpufreq.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/cpufreq/powernv-cpufreq.c b/drivers/cpufreq/powernv-cpufreq.c
index 1f0e20c..54c4536 100644
--- a/drivers/cpufreq/powernv-cpufreq.c
+++ b/drivers/cpufreq/powernv-cpufreq.c
@@ -647,6 +647,8 @@ static int powernv_cpufreq_target_index(struct cpufreq_policy *policy,
 	if (gpstate_id != freq_data.pstate_id)
+	else
+		del_timer_sync(&gpstates->timer);
 	freq_data.gpstate_id = gpstate_id;

More information about the Linuxppc-dev mailing list