[PATCH] cpfreq/intel_pstate: Fix max_perf_pct on resume

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



From: Dirk Brandewie <dirk.j.brandewie@xxxxxxxxx>

If the system is suspended while max_perf_pct is less than 100 percent
or no_turbo set policy->{min,max} will be set incorrectly with scaled
values which turn the scaled values into hard limits.

Fixes https://bugzilla.kernel.org/show_bug.cgi?id=61241

Reported-by: Patrick Bartels <petzicus@xxxxxxxxxxxxxx>
Signed-off-by: Dirk Brandewie <dirk.j.brandewie@xxxxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
---
 drivers/cpufreq/intel_pstate.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c
index 32b3479..3335f55 100644
--- a/drivers/cpufreq/intel_pstate.c
+++ b/drivers/cpufreq/intel_pstate.c
@@ -652,9 +652,8 @@ static int intel_pstate_cpu_init(struct cpufreq_policy *policy)
 	else
 		policy->policy = CPUFREQ_POLICY_POWERSAVE;
 
-	intel_pstate_get_min_max(cpu, &min_pstate, &max_pstate);
-	policy->min = min_pstate * 100000;
-	policy->max = max_pstate * 100000;
+	policy->min = cpu->pstate.min_pstate * 100000;
+	policy->max = cpu->pstate.turbo_pstate * 100000;
 
 	/* cpuinfo and default policy values */
 	policy->cpuinfo.min_freq = cpu->pstate.min_pstate * 100000;
-- 
1.8.3.1

--
To unsubscribe from this list: send the line "unsubscribe stable" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html




[Index of Archives]     [Linux Kernel]     [Kernel Development Newbies]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Yosemite Hiking]     [Linux Kernel]     [Linux SCSI]