From patchwork Mon Dec 20 16:43:55 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Taniya Das X-Patchwork-Id: 527481 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 034CDC433FE for ; Mon, 20 Dec 2021 16:44:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239420AbhLTQo0 (ORCPT ); Mon, 20 Dec 2021 11:44:26 -0500 Received: from so254-9.mailgun.net ([198.61.254.9]:59284 "EHLO so254-9.mailgun.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239398AbhLTQo0 (ORCPT ); Mon, 20 Dec 2021 11:44:26 -0500 DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1640018665; h=References: In-Reply-To: Message-Id: Date: Subject: Cc: To: From: Sender; bh=vqCplsHvlnC6fEX3Jhnv/6hd7RozQTFk7a0/51ifzFg=; b=aHVCRLGV+f0Wu9BrK73otoDYajrWjM7qw0mf86xEWUMdnj+tTehiu/V6BHCk0ZiF0YmSthC8 w1P5VV01qX5Wgd/1Li9WFvOGRKVubfoQeMGRClunRyBENxUJrmpRGan/88n1TPuzxRbNh9gD sILdQPbBm0ANORLfdRu4eJ1gXts= X-Mailgun-Sending-Ip: 198.61.254.9 X-Mailgun-Sid: WyI1MzIzYiIsICJsaW51eC1hcm0tbXNtQHZnZXIua2VybmVsLm9yZyIsICJiZTllNGEiXQ== Received: from smtp.codeaurora.org (ec2-35-166-182-171.us-west-2.compute.amazonaws.com [35.166.182.171]) by smtp-out-n01.prod.us-west-2.postgun.com with SMTP id 61c0b2e97a42cec70893582c (version=TLS1.2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256); Mon, 20 Dec 2021 16:44:25 GMT Sender: tdas=codeaurora.org@mg.codeaurora.org Received: by smtp.codeaurora.org (Postfix, from userid 1001) id 40696C4361C; Mon, 20 Dec 2021 16:44:25 +0000 (UTC) Received: from tdas-linux.qualcomm.com (unknown [202.46.22.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: tdas) by smtp.codeaurora.org (Postfix) with ESMTPSA id 40CD6C43619; Mon, 20 Dec 2021 16:44:21 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 smtp.codeaurora.org 40CD6C43619 Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; spf=fail smtp.mailfrom=codeaurora.org From: Taniya Das To: Stephen Boyd , =?utf-8?q?Michael_Turquette_=C2=A0?= Cc: Rajendra Nayak , linux-arm-msm@vger.kernel.org, linux-soc@vger.kernel.org, linux-clk@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, robh@kernel.org, robh+dt@kernel.org, Taniya Das Subject: [PATCH v2 2/5] clk: Enable/Disable runtime PM for clk_summary Date: Mon, 20 Dec 2021 22:13:55 +0530 Message-Id: <1640018638-19436-3-git-send-email-tdas@codeaurora.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1640018638-19436-1-git-send-email-tdas@codeaurora.org> References: <1640018638-19436-1-git-send-email-tdas@codeaurora.org> Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org The registers for some clocks in the SOC area, which are under the power domain are required to be enabled before accessing them. During the clk_summary if the power-domains are not enabled they could result into NoC errors. Thus ensure the register access of the clock controller is done with pm_untime_get/put functions. Signed-off-by: Taniya Das --- drivers/clk/clk.c | 2 ++ 1 file changed, 2 insertions(+) -- Qualcomm INDIA, on behalf of Qualcomm Innovation Center, Inc.is a member of the Code Aurora Forum, hosted by the Linux Foundation. diff --git a/drivers/clk/clk.c b/drivers/clk/clk.c index 963f56f..8de6a22 100644 --- a/drivers/clk/clk.c +++ b/drivers/clk/clk.c @@ -2966,7 +2966,9 @@ static void clk_summary_show_subtree(struct seq_file *s, struct clk_core *c, { struct clk_core *child; + clk_pm_runtime_get(c); clk_summary_show_one(s, c, level); + clk_pm_runtime_put(c); hlist_for_each_entry(child, &c->children, child_node) clk_summary_show_subtree(s, child, level + 1);