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 8a4e2ce0804c5fc1ccd0f869889bd2ee5d07f96b..29cdec198657b714174a4fa173ee1e5085e1cf10 100644 (file)
--- 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) {