debug lk

hc

2024-02-20 e636c8d336489bf3eed5878299e6cc045bbad077

 kernel/drivers/video/backlight/rave-sp-backlight.c
..
..
@@ -48,14 +48,20 @@
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 	struct device *dev = &pdev->dev;
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 	struct backlight_device *bd;
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-	bd = devm_backlight_device_register(dev, pdev->name, dev->parent,
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+	bd = devm_backlight_device_register(dev, pdev->name, dev,
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 					    dev_get_drvdata(dev->parent),
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 					    &rave_sp_backlight_ops,
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 					    &rave_sp_backlight_props);
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 	if (IS_ERR(bd))
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 		return PTR_ERR(bd);
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-	backlight_update_status(bd);
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+	/*
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+	 * If there is a phandle pointing to the device node we can
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+	 * assume that another device will manage the status changes.
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+	 * If not we make sure the backlight is in a consistent state.
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+	 */
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+	if (!dev->of_node->phandle)
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+		backlight_update_status(bd);
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 	return 0;
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 }