From mboxrd@z Thu Jan 1 00:00:00 1970 From: Shilpasri G Bhat Subject: [PATCH] cpufreq: powernv: Dont assume distinct pstate values for nominal and pmin Date: Fri, 12 Jan 2018 12:43:53 +0530 Message-ID: <1515741233-1442-1-git-send-email-shilpa.bhat@linux.vnet.ibm.com> Return-path: Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:44504 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1754530AbeALHOY (ORCPT ); Fri, 12 Jan 2018 02:14:24 -0500 Received: from pps.filterd (m0098416.ppops.net [127.0.0.1]) by mx0b-001b2d01.pphosted.com (8.16.0.22/8.16.0.22) with SMTP id w0C7EJNR024598 for ; Fri, 12 Jan 2018 02:14:23 -0500 Received: from e06smtp11.uk.ibm.com (e06smtp11.uk.ibm.com [195.75.94.107]) by mx0b-001b2d01.pphosted.com with ESMTP id 2femg99y9f-1 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=NOT) for ; Fri, 12 Jan 2018 02:14:21 -0500 Received: from localhost by e06smtp11.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Fri, 12 Jan 2018 07:14:11 -0000 Sender: linux-pm-owner@vger.kernel.org List-Id: linux-pm@vger.kernel.org To: rjw@rjwysocki.net Cc: viresh.kumar@linaro.org, mpe@ellerman.id.au, linux-pm@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org, ego@linux.vnet.ibm.com, svaidy@linux.vnet.ibm.com, akshay.adiga@linux.vnet.ibm.com, huntbag@linux.vnet.ibm.com, Shilpasri G Bhat 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 Signed-off-by: Shilpasri G Bhat --- drivers/cpufreq/powernv-cpufreq.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/cpufreq/powernv-cpufreq.c b/drivers/cpufreq/powernv-cpufreq.c index b6d7c4c..da7fdb4 100644 --- a/drivers/cpufreq/powernv-cpufreq.c +++ b/drivers/cpufreq/powernv-cpufreq.c @@ -288,9 +288,9 @@ 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) { -- 1.8.3.1