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authorDaniel Lezcano <daniel.lezcano@linaro.org>2017-10-19 20:05:45 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2017-12-25 16:26:31 +0300
commitcf826c57785384341c3f0cf2cfbfe86c02eb6b9b (patch)
treeace1d034910f705e737e6aff3b7b0264548a2adb /drivers/thermal
parent7254834c43bd32842e96fd856c9c9793a29e6fe2 (diff)
downloadlinux-cf826c57785384341c3f0cf2cfbfe86c02eb6b9b.tar.xz
thermal/drivers/hisi: Fix kernel panic on alarm interrupt
commit 2cb4de785c40d4a2132cfc13e63828f5a28c3351 upstream. 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 <daniel.lezcano@linaro.org> Reviewed-by: Leo Yan <leo.yan@linaro.org> Tested-by: Leo Yan <leo.yan@linaro.org> Signed-off-by: Eduardo Valentin <edubezval@gmail.com> Signed-off-by: Kevin Wangtao <kevin.wangtao@hisilicon.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/thermal')
-rw-r--r--drivers/thermal/hisi_thermal.c18
1 files changed, 9 insertions, 9 deletions
diff --git a/drivers/thermal/hisi_thermal.c b/drivers/thermal/hisi_thermal.c
index 8381696241d6..26bb8e2a482f 100644
--- a/drivers/thermal/hisi_thermal.c
+++ b/drivers/thermal/hisi_thermal.c
@@ -317,15 +317,6 @@ 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");
@@ -357,6 +348,15 @@ static int hisi_thermal_probe(struct platform_device *pdev)
hisi_thermal_toggle_sensor(&data->sensors[i], 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;