[PATCH 4.1 112/123] intel_pstate: Add get_scaling cpu_defaults param to Knights Landing

From: Greg Kroah-Hartman
Date: Sat Aug 08 2015 - 18:26:30 EST

4.1-stable review patch. If anyone has any objections, please let me know.


From: Lukasz Anaczkowski <lukasz.anaczkowski@xxxxxxxxx>

commit 69cefc273f942bd7bb347a02e8b5b738d5f6e6f3 upstream.

Scaling for Knights Landing is same as the default scaling (100000).
When Knigts Landing support was added to the pstate driver, this
parameter was omitted resulting in a kernel panic during boot.

Fixes: b34ef932d79a (intel_pstate: Knights Landing support)
Reported-by: Yasuaki Ishimatsu <yishimat@xxxxxxxxxx>
Signed-off-by: Dasaratharaman Chandramouli <dasaratharaman.chandramouli@xxxxxxxxx>
Signed-off-by: Lukasz Anaczkowski <lukasz.anaczkowski@xxxxxxxxx>
Acked-by: Kristen Carlson Accardi <kristen@xxxxxxxxxxxxxxx>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

drivers/cpufreq/intel_pstate.c | 1 +
1 file changed, 1 insertion(+)

--- a/drivers/cpufreq/intel_pstate.c
+++ b/drivers/cpufreq/intel_pstate.c
@@ -678,6 +678,7 @@ static struct cpu_defaults knl_params =
.get_max = core_get_max_pstate,
.get_min = core_get_min_pstate,
.get_turbo = knl_get_turbo_pstate,
+ .get_scaling = core_get_scaling,
.set = core_set_pstate,

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