Merge tag 'backlight-next-5.18' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight

Pull backlight updates from Lee Jones:
 "New Device Support:
   - Add support for PM6150L to Qualcomm WLED

  Fix-ups"
   - Use kcalloc() to avoid open-coding; pwm_bl
   - Device Tree changes; qcom-wled
   - Cleanup or simplify code; backlight"

* tag 'backlight-next-5.18' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight:
  backlight: backlight: Slighly simplify devm_of_find_backlight()
  backlight: qcom-wled: Add PM6150L compatible
  dt-bindings: backlight: qcom-wled: Add PM6150L compatible
  backlight: pwm_bl: Avoid open coded arithmetic in memory allocation

Author: torvalds

Documentation/devicetree/bindings/leds/backlight/qcom-wled.yaml

@@ -22,6 +22,7 @@ properties:
       - qcom,pmi8994-wled
       - qcom,pmi8998-wled
       - qcom,pm660l-wled
+      - qcom,pm6150l-wled
       - qcom,pm8150l-wled
 
   reg:

drivers/video/backlight/backlight.c

@@ -710,8 +710,7 @@ static void devm_backlight_release(void *data)
 {
 	struct backlight_device *bd = data;
 
-	if (bd)
-		put_device(&bd->dev);
+	put_device(&bd->dev);
 }
 
 /**
@@ -737,11 +736,10 @@ struct backlight_device *devm_of_find_backlight(struct device *dev)
 	bd = of_find_backlight(dev);
 	if (IS_ERR_OR_NULL(bd))
 		return bd;
-	ret = devm_add_action(dev, devm_backlight_release, bd);
-	if (ret) {
-		put_device(&bd->dev);
+	ret = devm_add_action_or_reset(dev, devm_backlight_release, bd);
+	if (ret)
 		return ERR_PTR(ret);
-	}
+
 	return bd;
 }
 EXPORT_SYMBOL(devm_of_find_backlight);

drivers/video/backlight/pwm_bl.c

@@ -263,9 +263,8 @@ static int pwm_backlight_parse_dt(struct device *dev,
 
 	/* read brightness levels from DT property */
 	if (num_levels > 0) {
-		size_t size = sizeof(*data->levels) * num_levels;
-
-		data->levels = devm_kzalloc(dev, size, GFP_KERNEL);
+		data->levels = devm_kcalloc(dev, num_levels,
+					    sizeof(*data->levels), GFP_KERNEL);
 		if (!data->levels)
 			return -ENOMEM;
 
@@ -320,8 +319,8 @@ static int pwm_backlight_parse_dt(struct device *dev,
 			 * Create a new table of brightness levels with all the
 			 * interpolated steps.
 			 */
-			size = sizeof(*table) * num_levels;
-			table = devm_kzalloc(dev, size, GFP_KERNEL);
+			table = devm_kcalloc(dev, num_levels, sizeof(*table),
+					     GFP_KERNEL);
 			if (!table)
 				return -ENOMEM;
 			/*