linux-kernel - [PATCH 4.1 112/123] intel_pstate: Add get_scaling cpu

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Date:	Sat,  8 Aug 2015 15:09:50 -0700
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org, Yasuaki Ishimatsu <yishimat@...hat.com>,
	Dasaratharaman Chandramouli 
	<dasaratharaman.chandramouli@...el.com>,
	Lukasz Anaczkowski <lukasz.anaczkowski@...el.com>,
	Kristen Carlson Accardi <kristen@...ux.intel.com>,
	"Rafael J. Wysocki" <rafael.j.wysocki@...el.com>
Subject: [PATCH 4.1 112/123] intel_pstate: Add get_scaling cpu_defaults param to Knights Landing

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

------------------

From: Lukasz Anaczkowski <lukasz.anaczkowski@...el.com>

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@...hat.com>
Signed-off-by: Dasaratharaman Chandramouli <dasaratharaman.chandramouli@...el.com>
Signed-off-by: Lukasz Anaczkowski <lukasz.anaczkowski@...el.com>
Acked-by: Kristen Carlson Accardi <kristen@...ux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 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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