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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: 09ca4c9b59 (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>
This commit is contained in:
Shilpasri G Bhat 2018-01-12 12:43:53 +05:30 committed by Rafael J. Wysocki
parent d8de7a44e1
commit 3fa4680b86
1 changed files with 2 additions and 2 deletions
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4
drivers/cpufreq/powernv-cpufreq.c
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@ -337,9 +337,9 @@ static int init_powernv_pstates(void)
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) {