diff mbox series

[v2,1/5] thermal: stm32: remove hardware irq handler

Message ID 20191104133020.8820-2-p.paillet@st.com (mailing list archive)
State New, archived
Delegated to: Eduardo Valentin
Headers show
Series thermal: stm32: driver improvements | expand

Commit Message

Pascal Paillet Nov. 4, 2019, 1:30 p.m. UTC 
Remove hardware irq handler because it is not needed to disable the
interrupt before the threaded handler. The goal is to simplify
the code.

Change-Id: Ida967e8543c8dafc6a24508000f64f6405add31d
---
 drivers/thermal/st/stm_thermal.c | 25 +------------------------
 1 file changed, 1 insertion(+), 24 deletions(-)

Comments

Daniel Lezcano Dec. 4, 2019, 9:05 p.m. UTC | #1 
On 04/11/2019 14:30, Pascal Paillet wrote:
> Remove hardware irq handler because it is not needed to disable the
> interrupt before the threaded handler. The goal is to simplify
> the code.

Please elaborate the explanation here. I guess all the code removed is
because of:

	/* read IT reason in SR and clear flags */
	value = readl_relaxed(sensor->base + DTS_SR_OFFSET);

Right?

> Change-Id: Ida967e8543c8dafc6a24508000f64f6405add31d

Remove Change-Id.

Missing SoB.

> ---
>  drivers/thermal/st/stm_thermal.c | 25 +------------------------
>  1 file changed, 1 insertion(+), 24 deletions(-)
> 
> diff --git a/drivers/thermal/st/stm_thermal.c b/drivers/thermal/st/stm_thermal.c
> index cf9ddc52f30e..31aa63fb3db1 100644
> --- a/drivers/thermal/st/stm_thermal.c
> +++ b/drivers/thermal/st/stm_thermal.c
> @@ -98,21 +98,10 @@ struct stm_thermal_sensor {
>  	unsigned int low_temp_enabled;
>  	int num_trips;
>  	int irq;
> -	unsigned int irq_enabled;
>  	void __iomem *base;
>  	int t0, fmt0, ramp_coeff;
>  };
>  
> -static irqreturn_t stm_thermal_alarm_irq(int irq, void *sdata)
> -{
> -	struct stm_thermal_sensor *sensor = sdata;
> -
> -	disable_irq_nosync(irq);
> -	sensor->irq_enabled = false;
> -
> -	return IRQ_WAKE_THREAD;
> -}
> -
>  static irqreturn_t stm_thermal_alarm_irq_thread(int irq, void *sdata)
>  {
>  	u32 value;
> @@ -464,16 +453,6 @@ static int stm_thermal_get_temp(void *data, int *temp)
>  			if (ret)
>  				return ret;
>  		}
> -
> -		/*
> -		 * Re-enable alarm IRQ if temperature below critical
> -		 * temperature
> -		 */
> -		if (!sensor->irq_enabled &&
> -		    (celsius(*temp) < sensor->temp_critical)) {
> -			sensor->irq_enabled = true;
> -			enable_irq(sensor->irq);
> -		}
>  	}
>  
>  	return 0;
> @@ -493,7 +472,7 @@ static int stm_register_irq(struct stm_thermal_sensor *sensor)
>  	}
>  
>  	ret = devm_request_threaded_irq(dev, sensor->irq,
> -					stm_thermal_alarm_irq,
> +					NULL,
>  					stm_thermal_alarm_irq_thread,
>  					IRQF_ONESHOT,
>  					dev->driver->name, sensor);
> @@ -503,8 +482,6 @@ static int stm_register_irq(struct stm_thermal_sensor *sensor)
>  		return ret;
>  	}
>  
> -	sensor->irq_enabled = true;
> -
>  	dev_dbg(dev, "%s: thermal IRQ registered", __func__);
>  
>  	return 0;
>
diff mbox series

Patch

diff --git a/drivers/thermal/st/stm_thermal.c b/drivers/thermal/st/stm_thermal.c
index cf9ddc52f30e..31aa63fb3db1 100644
--- a/drivers/thermal/st/stm_thermal.c
+++ b/drivers/thermal/st/stm_thermal.c
@@ -98,21 +98,10 @@  struct stm_thermal_sensor {
 	unsigned int low_temp_enabled;
 	int num_trips;
 	int irq;
-	unsigned int irq_enabled;
 	void __iomem *base;
 	int t0, fmt0, ramp_coeff;
 };
 
-static irqreturn_t stm_thermal_alarm_irq(int irq, void *sdata)
-{
-	struct stm_thermal_sensor *sensor = sdata;
-
-	disable_irq_nosync(irq);
-	sensor->irq_enabled = false;
-
-	return IRQ_WAKE_THREAD;
-}
-
 static irqreturn_t stm_thermal_alarm_irq_thread(int irq, void *sdata)
 {
 	u32 value;
@@ -464,16 +453,6 @@  static int stm_thermal_get_temp(void *data, int *temp)
 			if (ret)
 				return ret;
 		}
-
-		/*
-		 * Re-enable alarm IRQ if temperature below critical
-		 * temperature
-		 */
-		if (!sensor->irq_enabled &&
-		    (celsius(*temp) < sensor->temp_critical)) {
-			sensor->irq_enabled = true;
-			enable_irq(sensor->irq);
-		}
 	}
 
 	return 0;
@@ -493,7 +472,7 @@  static int stm_register_irq(struct stm_thermal_sensor *sensor)
 	}
 
 	ret = devm_request_threaded_irq(dev, sensor->irq,
-					stm_thermal_alarm_irq,
+					NULL,
 					stm_thermal_alarm_irq_thread,
 					IRQF_ONESHOT,
 					dev->driver->name, sensor);
@@ -503,8 +482,6 @@  static int stm_register_irq(struct stm_thermal_sensor *sensor)
 		return ret;
 	}
 
-	sensor->irq_enabled = true;
-
 	dev_dbg(dev, "%s: thermal IRQ registered", __func__);
 
 	return 0;