From patchwork Thu Nov 22 19:57:43 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sasha Levin X-Patchwork-Id: 10694789 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 617EE14BD for ; Thu, 22 Nov 2018 19:57:57 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 53DDB2B150 for ; Thu, 22 Nov 2018 19:57:57 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 47E652B365; Thu, 22 Nov 2018 19:57:57 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.0 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id C7C952B150 for ; Thu, 22 Nov 2018 19:57:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2392470AbeKWGis (ORCPT ); Fri, 23 Nov 2018 01:38:48 -0500 Received: from mail.kernel.org ([198.145.29.99]:37212 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2389557AbeKWGir (ORCPT ); Fri, 23 Nov 2018 01:38:47 -0500 Received: from sasha-vm.mshome.net (unknown [37.142.5.207]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 8017620892; Thu, 22 Nov 2018 19:57:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1542916674; bh=zrJzTwYBBEvRfmHIPJmfN9B59d1o5AsPeffcqFCWFOc=; h=From:To:Cc:Subject:Date:From; b=AKY6vZa+I+WN8Ids7xfv7IGp8M0RvZNozhU6h33WUZcLsl6+lkGSYB/RP0P/ipWtS 2BHKNQ1NXpZZm6BVOvM7JOg9qEtRaT3/0kavVJEBvxUgQvpoF7wXHj0c9lieRfDNm0 NDgxiKD2lGppmpuLhKAS5H/E1tR3Zv/9g10M+Iys= From: Sasha Levin To: stable@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Anson Huang , Anson Huang , "Rafael J . Wysocki" , Sasha Levin , linux-pm@vger.kernel.org Subject: [PATCH AUTOSEL 3.18 1/7] cpufreq: imx6q: add return value check for voltage scale Date: Thu, 22 Nov 2018 14:57:43 -0500 Message-Id: <20181122195749.14086-1-sashal@kernel.org> X-Mailer: git-send-email 2.17.1 Sender: linux-pm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Anson Huang [ Upstream commit 6ef28a04d1ccf718eee069b72132ce4aa1e52ab9 ] Add return value check for voltage scale when ARM clock rate change fail. Signed-off-by: Anson Huang Acked-by: Viresh Kumar Signed-off-by: Rafael J. Wysocki Signed-off-by: Sasha Levin --- drivers/cpufreq/imx6q-cpufreq.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/cpufreq/imx6q-cpufreq.c b/drivers/cpufreq/imx6q-cpufreq.c index c2d30765bf3d..a4ede00483d1 100644 --- a/drivers/cpufreq/imx6q-cpufreq.c +++ b/drivers/cpufreq/imx6q-cpufreq.c @@ -105,8 +105,13 @@ static int imx6q_set_target(struct cpufreq_policy *policy, unsigned int index) /* Ensure the arm clock divider is what we expect */ ret = clk_set_rate(arm_clk, new_freq * 1000); if (ret) { + int ret1; + dev_err(cpu_dev, "failed to set clock rate: %d\n", ret); - regulator_set_voltage_tol(arm_reg, volt_old, 0); + ret1 = regulator_set_voltage_tol(arm_reg, volt_old, 0); + if (ret1) + dev_warn(cpu_dev, + "failed to restore vddarm voltage: %d\n", ret1); return ret; }