From: Shilpasri G Bhat <shilpa.bhat@linux.vnet.ibm.com>
Date: Fri, 12 Jan 2018 07:13:53 +0000 (+0530)
Subject: cpufreq: powernv: Dont assume distinct pstate values for nominal and pmin
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=3fa4680b860bf48b437d6a2c039789c4abe202ae;p=linux.git

cpufreq: powernv: Dont assume distinct pstate values for nominal and pmin

Some OpenPOWER boxes can have same pstate values for nominal and
pmin pstates. In these boxes the current code will not initialize
'powernv_pstate_info.min' variable and result in erroneous CPU
frequency reporting. This patch fixes this problem.

Fixes: 09ca4c9b5958 (cpufreq: powernv: Replacing pstate_id with frequency table index)
Reported-by: Alvin Wang <wangat@tw.ibm.com>
Signed-off-by: Shilpasri G Bhat <shilpa.bhat@linux.vnet.ibm.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Cc: 4.8+ <stable@vger.kernel.org> # 4.8+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
---

diff --git a/drivers/cpufreq/powernv-cpufreq.c b/drivers/cpufreq/powernv-cpufreq.c
index 8a4e2ce0804c5..29cdec198657b 100644
--- a/drivers/cpufreq/powernv-cpufreq.c
+++ b/drivers/cpufreq/powernv-cpufreq.c
@@ -337,9 +337,9 @@ next:
 
 		if (id == pstate_max)
 			powernv_pstate_info.max = i;
-		else if (id == pstate_nominal)
+		if (id == pstate_nominal)
 			powernv_pstate_info.nominal = i;
-		else if (id == pstate_min)
+		if (id == pstate_min)
 			powernv_pstate_info.min = i;
 
 		if (powernv_pstate_info.wof_enabled && id == pstate_turbo) {