From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932373AbdJJSE6 (ORCPT ); Tue, 10 Oct 2017 14:04:58 -0400 Received: from mail-wm0-f51.google.com ([74.125.82.51]:53957 "EHLO mail-wm0-f51.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756308AbdJJSEw (ORCPT ); Tue, 10 Oct 2017 14:04:52 -0400 X-Google-Smtp-Source: AOwi7QDtvhIeFItGV8n2b1lq7//u58BX+DoRpUCyhrc5EwHob40+ZHvgsPSFcpi+sFj2l2N/4lbPCA== From: Daniel Lezcano To: edubezval@gmail.com, rui.zhang@intel.com Cc: linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, kevin.wangtao@linaro.org, Leo Yan Subject: [PATCH 03/25] thermal/drivers/hisi: Fix kernel panic on alarm interrupt Date: Tue, 10 Oct 2017 20:02:28 +0200 Message-Id: <1507658570-32675-3-git-send-email-daniel.lezcano@linaro.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1507658570-32675-1-git-send-email-daniel.lezcano@linaro.org> References: <79a5f10c-0fb7-3e4f-caac-c1625904b137@linaro.org> <1507658570-32675-1-git-send-email-daniel.lezcano@linaro.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The threaded interrupt for the alarm interrupt is requested before the temperature controller is setup. This one can fire an interrupt immediately leading to a kernel panic as the sensor data is not initialized. In order to prevent that, move the threaded irq after the Tsensor is setup. Signed-off-by: Daniel Lezcano Reviewed-by: Leo Yan Tested-by: Leo Yan --- drivers/thermal/hisi_thermal.c | 18 +++++++++--------- 1 file changed, 9 insertions(+), 9 deletions(-) diff --git a/drivers/thermal/hisi_thermal.c b/drivers/thermal/hisi_thermal.c index 687efd4..feae552 100644 --- a/drivers/thermal/hisi_thermal.c +++ b/drivers/thermal/hisi_thermal.c @@ -287,15 +287,6 @@ static int hisi_thermal_probe(struct platform_device *pdev) if (data->irq < 0) return data->irq; - ret = devm_request_threaded_irq(&pdev->dev, data->irq, - hisi_thermal_alarm_irq, - hisi_thermal_alarm_irq_thread, - 0, "hisi_thermal", data); - if (ret < 0) { - dev_err(&pdev->dev, "failed to request alarm irq: %d\n", ret); - return ret; - } - platform_set_drvdata(pdev, data); data->clk = devm_clk_get(&pdev->dev, "thermal_clk"); @@ -328,6 +319,15 @@ static int hisi_thermal_probe(struct platform_device *pdev) hisi_thermal_toggle_sensor(&data->sensors, true); + ret = devm_request_threaded_irq(&pdev->dev, data->irq, + hisi_thermal_alarm_irq, + hisi_thermal_alarm_irq_thread, + 0, "hisi_thermal", data); + if (ret < 0) { + dev_err(&pdev->dev, "failed to request alarm irq: %d\n", ret); + return ret; + } + enable_irq(data->irq); return 0; -- 2.7.4