From patchwork Tue Nov 26 02:04:34 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paul Walmsley X-Patchwork-Id: 3236011 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 E663CC045B for ; Tue, 26 Nov 2013 02:04:52 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 279A620348 for ; Tue, 26 Nov 2013 02:04:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 415352031C for ; Tue, 26 Nov 2013 02:04:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752649Ab3KZCEg (ORCPT ); Mon, 25 Nov 2013 21:04:36 -0500 Received: from hqemgate14.nvidia.com ([216.228.121.143]:5363 "EHLO hqemgate14.nvidia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751741Ab3KZCEf (ORCPT ); Mon, 25 Nov 2013 21:04:35 -0500 Received: from hqnvupgp07.nvidia.com (Not Verified[216.228.121.13]) by hqemgate14.nvidia.com id ; Mon, 25 Nov 2013 18:04:18 -0800 Received: from hqemhub01.nvidia.com ([172.20.12.94]) by hqnvupgp07.nvidia.com (PGP Universal service); Mon, 25 Nov 2013 18:02:11 -0800 X-PGP-Universal: processed; by hqnvupgp07.nvidia.com on Mon, 25 Nov 2013 18:02:11 -0800 Received: from hqnvemgw02.nvidia.com (172.16.227.111) by hqemhub01.nvidia.com (172.20.150.30) with Microsoft SMTP Server id 8.3.327.1; Mon, 25 Nov 2013 18:04:34 -0800 Received: from thelma.nvidia.com (Not Verified[172.16.212.77]) by hqnvemgw02.nvidia.com with MailMarshal (v7,1,2,5326) id ; Mon, 25 Nov 2013 18:04:35 -0800 Received: from tamien.nvidia.com (tamien.nvidia.com [172.17.186.57]) by thelma.nvidia.com (8.13.8+Sun/8.8.8) with ESMTP id rAQ24YSj012040; Mon, 25 Nov 2013 18:04:34 -0800 (PST) Date: Mon, 25 Nov 2013 18:04:34 -0800 From: Paul Walmsley X-X-Sender: pwalmsley@tamien To: Viresh Kumar CC: "Rafael J. Wysocki" , , , Subject: [PATCH] cpufreq: SPEAr: clk_round_rate() can return a zero upon error Message-ID: User-Agent: Alpine 2.02 (DEB 1266 2009-07-14) 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=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable 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 Treat both negative and zero return values from clk_round_rate() as errors. This is needed since subsequent patches will convert clk_round_rate()'s return value to be an unsigned type, rather than a signed type, since some clock sources can generate rates higher than (2^31)-1 Hz. Eventually, when calling clk_round_rate(), only a return value of zero will be considered a error. All other values will be considered valid rates. The comparison against values less than 0 is kept to preserve the correct behavior in the meantime. Signed-off-by: Paul Walmsley Cc: Viresh Kumar Cc: Rafael J. Wysocki --- Applies on v3.13-rc1. See also: http://marc.info/?l=linux-arm-kernel&m=138542591313620&w=2 drivers/cpufreq/spear-cpufreq.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) -- 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 diff --git a/drivers/cpufreq/spear-cpufreq.c b/drivers/cpufreq/spear-cpufreq.c index d02ccd19c9c4..45ea4c094542 100644 --- a/drivers/cpufreq/spear-cpufreq.c +++ b/drivers/cpufreq/spear-cpufreq.c @@ -138,7 +138,7 @@ static int spear_cpufreq_target(struct cpufreq_policy *policy, } newfreq = clk_round_rate(srcclk, newfreq * mult); - if (newfreq < 0) { + if (newfreq <= 0) { pr_err("clk_round_rate failed for cpu src clock\n"); return newfreq; }