add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/powercap/powercap_sys.c
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@@ -530,9 +530,6 @@
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 	power_zone->name = kstrdup(name, GFP_KERNEL);
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 	if (!power_zone->name)
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 		goto err_name_alloc;
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-	dev_set_name(&power_zone->dev, "%s:%x",
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-					dev_name(power_zone->dev.parent),
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-					power_zone->id);
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 	power_zone->constraints = kcalloc(nr_constraints,
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 					  sizeof(*power_zone->constraints),
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 					  GFP_KERNEL);
..
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@@ -555,9 +552,16 @@
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 	power_zone->dev_attr_groups[0] = &power_zone->dev_zone_attr_group;
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 	power_zone->dev_attr_groups[1] = NULL;
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 	power_zone->dev.groups = power_zone->dev_attr_groups;
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+	dev_set_name(&power_zone->dev, "%s:%x",
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+					dev_name(power_zone->dev.parent),
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+					power_zone->id);
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 	result = device_register(&power_zone->dev);
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-	if (result)
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-		goto err_dev_ret;
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+	if (result) {
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+		put_device(&power_zone->dev);
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+		mutex_unlock(&control_type->lock);
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+
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+		return ERR_PTR(result);
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+	}
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 	control_type->nr_zones++;
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 	mutex_unlock(&control_type->lock);