From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:34536 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S934349AbeBUMzq (ORCPT ); Wed, 21 Feb 2018 07:55:46 -0500 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Alvin Wang , Shilpasri G Bhat , Viresh Kumar , "Rafael J. Wysocki" Subject: [PATCH 4.9 39/77] cpufreq: powernv: Dont assume distinct pstate values for nominal and pmin Date: Wed, 21 Feb 2018 13:48:48 +0100 Message-Id: <20180221124433.818164950@linuxfoundation.org> In-Reply-To: <20180221124432.172390020@linuxfoundation.org> References: <20180221124432.172390020@linuxfoundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: stable-owner@vger.kernel.org List-ID: 4.9-stable review patch. If anyone has any objections, please let me know. ------------------ From: Shilpasri G Bhat commit 3fa4680b860bf48b437d6a2c039789c4abe202ae upstream. 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 Acked-by: Viresh Kumar Cc: 4.8+ # 4.8+ Signed-off-by: Rafael J. Wysocki Signed-off-by: Greg Kroah-Hartman --- drivers/cpufreq/powernv-cpufreq.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- a/drivers/cpufreq/powernv-cpufreq.c +++ b/drivers/cpufreq/powernv-cpufreq.c @@ -260,9 +260,9 @@ 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; }