diff mbox series

[v2,2/4] thermal: core: Introduce thermal_cooling_device_present()

Message ID 4488488.LvFx2qVVIh@kreacher
State Superseded
Headers show
Series thermal: core/ACPI: Fix processor cooling device regression | expand

Commit Message

Rafael J. Wysocki March 13, 2023, 2:28 p.m. UTC 
From: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

Introduce a helper function, thermal_cooling_device_present(), for
checking if the given cooling device is in the list of registered
cooling devices to avoid some code duplication in a subsequent
patch.

No expected functional impact.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
---

v1 -> v2: No changes

---
 drivers/thermal/thermal_core.c |   21 +++++++++++++++------
 1 file changed, 15 insertions(+), 6 deletions(-)

Comments

Zhang, Rui March 14, 2023, 2:03 a.m. UTC | #1 
On Mon, 2023-03-13 at 15:28 +0100, Rafael J. Wysocki wrote:
> From: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
> 
> Introduce a helper function, thermal_cooling_device_present(), for
> checking if the given cooling device is in the list of registered
> cooling devices to avoid some code duplication in a subsequent
> patch.
> 
> No expected functional impact.
> 
> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

Tested-by: Zhang Rui <rui.zhang@intel.com>
Reviewed-by: Zhang Rui <rui.zhang@intel.com>

thanks,
rui

> ---
> 
> v1 -> v2: No changes
> 
> ---
>  drivers/thermal/thermal_core.c |   21 +++++++++++++++------
>  1 file changed, 15 insertions(+), 6 deletions(-)
> 
> Index: linux-pm/drivers/thermal/thermal_core.c
> ===================================================================
> --- linux-pm.orig/drivers/thermal/thermal_core.c
> +++ linux-pm/drivers/thermal/thermal_core.c
> @@ -1045,6 +1045,18 @@ devm_thermal_of_cooling_device_register(
>  }
>  EXPORT_SYMBOL_GPL(devm_thermal_of_cooling_device_register);
>  
> +static bool thermal_cooling_device_present(struct
> thermal_cooling_device *cdev)
> +{
> +	struct thermal_cooling_device *pos = NULL;
> +
> +	list_for_each_entry(pos, &thermal_cdev_list, node) {
> +		if (pos == cdev)
> +			return true;
> +	}
> +
> +	return false;
> +}
> +
>  static void __unbind(struct thermal_zone_device *tz, int mask,
>  		     struct thermal_cooling_device *cdev)
>  {
> @@ -1067,20 +1079,17 @@ void thermal_cooling_device_unregister(s
>  	int i;
>  	const struct thermal_zone_params *tzp;
>  	struct thermal_zone_device *tz;
> -	struct thermal_cooling_device *pos = NULL;
>  
>  	if (!cdev)
>  		return;
>  
>  	mutex_lock(&thermal_list_lock);
> -	list_for_each_entry(pos, &thermal_cdev_list, node)
> -		if (pos == cdev)
> -			break;
> -	if (pos != cdev) {
> -		/* thermal cooling device not found */
> +
> +	if (!thermal_cooling_device_present(cdev)) {
>  		mutex_unlock(&thermal_list_lock);
>  		return;
>  	}
> +
>  	list_del(&cdev->node);
>  
>  	/* Unbind all thermal zones associated with 'this' cdev */
> 
> 
>
diff mbox series

Patch

Index: linux-pm/drivers/thermal/thermal_core.c
===================================================================
--- linux-pm.orig/drivers/thermal/thermal_core.c
+++ linux-pm/drivers/thermal/thermal_core.c
@@ -1045,6 +1045,18 @@  devm_thermal_of_cooling_device_register(
 }
 EXPORT_SYMBOL_GPL(devm_thermal_of_cooling_device_register);
 
+static bool thermal_cooling_device_present(struct thermal_cooling_device *cdev)
+{
+	struct thermal_cooling_device *pos = NULL;
+
+	list_for_each_entry(pos, &thermal_cdev_list, node) {
+		if (pos == cdev)
+			return true;
+	}
+
+	return false;
+}
+
 static void __unbind(struct thermal_zone_device *tz, int mask,
 		     struct thermal_cooling_device *cdev)
 {
@@ -1067,20 +1079,17 @@  void thermal_cooling_device_unregister(s
 	int i;
 	const struct thermal_zone_params *tzp;
 	struct thermal_zone_device *tz;
-	struct thermal_cooling_device *pos = NULL;
 
 	if (!cdev)
 		return;
 
 	mutex_lock(&thermal_list_lock);
-	list_for_each_entry(pos, &thermal_cdev_list, node)
-		if (pos == cdev)
-			break;
-	if (pos != cdev) {
-		/* thermal cooling device not found */
+
+	if (!thermal_cooling_device_present(cdev)) {
 		mutex_unlock(&thermal_list_lock);
 		return;
 	}
+
 	list_del(&cdev->node);
 
 	/* Unbind all thermal zones associated with 'this' cdev */