add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/powercap/powercap_sys.c
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@@ -1,19 +1,7 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /*
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  * Power capping class
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  * Copyright (c) 2013, Intel Corporation.
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- *
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- * This program is free software; you can redistribute it and/or modify it
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- * under the terms and conditions of the GNU General Public License,
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- * version 2, as published by the Free Software Foundation.
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- *
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- * This program is distributed in the hope it will be useful, but WITHOUT
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- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
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- * more details.
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- *
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- * You should have received a copy of the GNU General Public License along with
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- * this program; if not, write to the Free Software Foundation, Inc.
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- *
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  */
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6
 
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 #include <linux/module.h>
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@@ -542,9 +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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@@ -567,9 +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);
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@@ -683,7 +675,7 @@
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 	return class_register(&powercap_class);
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 }
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-device_initcall(powercap_init);
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+fs_initcall(powercap_init);
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 MODULE_DESCRIPTION("PowerCap sysfs Driver");
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 MODULE_AUTHOR("Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>");