From patchwork Tue Oct 15 23:09:29 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Rafael J. Wysocki" X-Patchwork-Id: 3049091 Return-Path: X-Original-To: patchwork-linux-pm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 36D90BF924 for ; Tue, 15 Oct 2013 22:57:43 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 67E20201BD for ; Tue, 15 Oct 2013 22:57:42 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 576EB20426 for ; Tue, 15 Oct 2013 22:57:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933633Ab3JOW5k (ORCPT ); Tue, 15 Oct 2013 18:57:40 -0400 Received: from v094114.home.net.pl ([79.96.170.134]:63330 "HELO v094114.home.net.pl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S933632Ab3JOW5k (ORCPT ); Tue, 15 Oct 2013 18:57:40 -0400 Received: from aept218.neoplus.adsl.tpnet.pl [79.191.149.218] (HELO vostro.rjw.lan) by serwer1319399.home.pl [79.96.170.134] with SMTP (IdeaSmtpServer v0.80) id 242c58277eec0e99; Wed, 16 Oct 2013 00:57:37 +0200 From: "Rafael J. Wysocki" To: Linux PM list Cc: dirk.brandewie@gmail.com, Dirk Brandewie , Srinivas Pandruvada Subject: [PATCH] intel_pstate: Fix type mismatch warning Date: Wed, 16 Oct 2013 01:09:29 +0200 Message-ID: <9494730.EGV2mTSpNl@vostro.rjw.lan> User-Agent: KMail/4.10.5 (Linux/3.11.0+; KDE/4.10.5; x86_64; ; ) MIME-Version: 1.0 Sender: linux-pm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org X-Spam-Status: No, score=-7.4 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Rafael J. Wysocki The expression in line 398 of intel_pstate.c causes the following warning to be emitted: drivers/cpufreq/intel_pstate.c:398:3: warning: left shift count >= width of type which is due to the fact that the pstate variable is of type int. Fix that by using a helper unsigned long variable and simplify the code slightly. Signed-off-by: Rafael J. Wysocki --- drivers/cpufreq/intel_pstate.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) -- To unsubscribe from this list: send the line "unsubscribe linux-pm" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Index: linux-pm/drivers/cpufreq/intel_pstate.c =================================================================== --- linux-pm.orig/drivers/cpufreq/intel_pstate.c +++ linux-pm/drivers/cpufreq/intel_pstate.c @@ -383,6 +383,7 @@ static void intel_pstate_get_min_max(str static void intel_pstate_set_pstate(struct cpudata *cpu, int pstate) { int max_perf, min_perf; + unsigned long val; intel_pstate_get_min_max(cpu, &min_perf, &max_perf); @@ -394,11 +395,11 @@ static void intel_pstate_set_pstate(stru trace_cpu_frequency(pstate * 100000, cpu->cpu); cpu->pstate.current_pstate = pstate; + val = pstate << 8; if (limits.no_turbo) - wrmsrl(MSR_IA32_PERF_CTL, BIT(32) | (pstate << 8)); - else - wrmsrl(MSR_IA32_PERF_CTL, pstate << 8); + val |= BIT(32); + wrmsrl(MSR_IA32_PERF_CTL, val); } static inline void intel_pstate_pstate_increase(struct cpudata *cpu, int steps)