This is a note to let you know that I've just added the patch titled

thermal/drivers/hisi: Fix missing interrupt enablement

to the 4.9-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...

The filename of the patch is: thermal-drivers-hisi-fix-missing-interrupt-enablement.patch and it can be found in the queue-4.9 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.

From c176b10b025acee4dc8f2ab1cd64eb73b5ccef53 Mon Sep 17 00:00:00 2001

From: Daniel Lezcano daniel.lezcano@linaro.org Date: Thu, 19 Oct 2017 19:05:43 +0200 Subject: thermal/drivers/hisi: Fix missing interrupt enablement

From: Daniel Lezcano daniel.lezcano@linaro.org

commit c176b10b025acee4dc8f2ab1cd64eb73b5ccef53 upstream.

The interrupt for the temperature threshold is not enabled at the end of the probe function, enable it after the setup is complete.

On the other side, the irq_enabled is not correctly set as we are checking if the interrupt is masked where 'yes' means irq_enabled=false.

irq_get_irqchip_state(data->irq, IRQCHIP_STATE_MASKED, &data->irq_enabled);

As we are always enabling the interrupt, it is pointless to check if the interrupt is masked or not, just set irq_enabled to 'true'.

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

--- drivers/thermal/hisi_thermal.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-)

--- a/drivers/thermal/hisi_thermal.c +++ b/drivers/thermal/hisi_thermal.c @@ -345,8 +345,7 @@ static int hisi_thermal_probe(struct pla }

hisi_thermal_enable_bind_irq_sensor(data); - irq_get_irqchip_state(data->irq, IRQCHIP_STATE_MASKED, - &data->irq_enabled); + data->irq_enabled = true;

for (i = 0; i < HISI_MAX_SENSORS; ++i) { ret = hisi_thermal_register_sensor(pdev, data, @@ -358,6 +357,8 @@ static int hisi_thermal_probe(struct pla hisi_thermal_toggle_sensor(&data->sensors[i], true); }

+ enable_irq(data->irq); + return 0; }

Patches currently in stable-queue which might be from daniel.lezcano@linaro.org are

queue-4.9/thermal-drivers-hisi-fix-kernel-panic-on-alarm-interrupt.patch queue-4.9/thermal-drivers-hisi-fix-multiple-alarm-interrupts-firing.patch queue-4.9/thermal-drivers-hisi-fix-missing-interrupt-enablement.patch