From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 362576FB5 for ; Sun, 17 Sep 2023 20:35:26 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8ADE7C433C8; Sun, 17 Sep 2023 20:35:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1694982926; bh=RdUGNlqLu8aW3BNwtMJy7dqiGhVxPIHDFd9Yj+DoHDI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=016tYytdxWkEuJjrmTpyeIpalUcx21oWPftDM+kO1JlkMG0qAojnnjOTGF93yxBPz Y8Qpo6Gkjb7SrJE/dVA1UizngmvDPg7+CFPqiGS7OnVhyQWQb3sWLtV3wH6Q32zn8y RxHbGX1p9vx8J2v892xrSmbjW2Uqq/Ahuj0CMuUM= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Bjorn Andersson , Johan Hovold Subject: [PATCH 5.15 393/511] clk: qcom: turingcc-qcs404: fix missing resume during probe Date: Sun, 17 Sep 2023 21:13:40 +0200 Message-ID: <20230917191123.284212093@linuxfoundation.org> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20230917191113.831992765@linuxfoundation.org> References: <20230917191113.831992765@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 5.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Johan Hovold commit a9f71a033587c9074059132d34c74eabbe95ef26 upstream. Drivers that enable runtime PM must make sure that the controller is runtime resumed before accessing its registers to prevent the power domain from being disabled. Fixes: 892df0191b29 ("clk: qcom: Add QCS404 TuringCC") Cc: stable@vger.kernel.org # 5.2 Cc: Bjorn Andersson Signed-off-by: Johan Hovold Link: https://lore.kernel.org/r/20230718132902.21430-9-johan+linaro@kernel.org Signed-off-by: Bjorn Andersson Signed-off-by: Greg Kroah-Hartman --- drivers/clk/qcom/turingcc-qcs404.c | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) --- a/drivers/clk/qcom/turingcc-qcs404.c +++ b/drivers/clk/qcom/turingcc-qcs404.c @@ -124,11 +124,22 @@ static int turingcc_probe(struct platfor return ret; } + ret = pm_runtime_resume_and_get(&pdev->dev); + if (ret) + return ret; + ret = qcom_cc_probe(pdev, &turingcc_desc); if (ret < 0) - return ret; + goto err_put_rpm; + + pm_runtime_put(&pdev->dev); return 0; + +err_put_rpm: + pm_runtime_put_sync(&pdev->dev); + + return ret; } static const struct dev_pm_ops turingcc_pm_ops = {