add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/leds/led-class-flash.c
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@@ -1,12 +1,9 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /*
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  * LED Flash class interface
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  *
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  * Copyright (C) 2015 Samsung Electronics Co., Ltd.
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  * Author: Jacek Anaszewski <j.anaszewski@samsung.com>
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- *
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- * This program is free software; you can redistribute it and/or modify
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- * it under the terms of the GNU General Public License version 2 as
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- * published by the Free Software Foundation.
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  */
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 #include <linux/device.h>
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@@ -285,8 +282,9 @@
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 	led_cdev->groups = flash_groups;
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 }
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-int led_classdev_flash_register(struct device *parent,
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-				struct led_classdev_flash *fled_cdev)
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+int led_classdev_flash_register_ext(struct device *parent,
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+				    struct led_classdev_flash *fled_cdev,
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+				    struct led_init_data *init_data)
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 {
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 	struct led_classdev *led_cdev;
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 	const struct led_flash_ops *ops;
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@@ -312,13 +310,13 @@
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 	}
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 	/* Register led class device */
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-	ret = led_classdev_register(parent, led_cdev);
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+	ret = led_classdev_register_ext(parent, led_cdev, init_data);
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 	if (ret < 0)
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 		return ret;
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 	return 0;
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 }
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-EXPORT_SYMBOL_GPL(led_classdev_flash_register);
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+EXPORT_SYMBOL_GPL(led_classdev_flash_register_ext);
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 void led_classdev_flash_unregister(struct led_classdev_flash *fled_cdev)
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 {
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@@ -329,6 +327,56 @@
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 }
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 EXPORT_SYMBOL_GPL(led_classdev_flash_unregister);
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+static void devm_led_classdev_flash_release(struct device *dev, void *res)
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+{
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+	led_classdev_flash_unregister(*(struct led_classdev_flash **)res);
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+}
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+
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+int devm_led_classdev_flash_register_ext(struct device *parent,
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+				     struct led_classdev_flash *fled_cdev,
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+				     struct led_init_data *init_data)
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+{
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+	struct led_classdev_flash **dr;
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+	int ret;
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+
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+	dr = devres_alloc(devm_led_classdev_flash_release, sizeof(*dr),
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+			  GFP_KERNEL);
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+	if (!dr)
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+		return -ENOMEM;
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+
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+	ret = led_classdev_flash_register_ext(parent, fled_cdev, init_data);
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+	if (ret) {
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+		devres_free(dr);
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+		return ret;
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+	}
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+
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+	*dr = fled_cdev;
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+	devres_add(parent, dr);
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+
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+	return 0;
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+}
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+EXPORT_SYMBOL_GPL(devm_led_classdev_flash_register_ext);
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+
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+static int devm_led_classdev_flash_match(struct device *dev,
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+					      void *res, void *data)
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+{
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+	struct led_classdev_flash **p = res;
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+
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+	if (WARN_ON(!p || !*p))
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+		return 0;
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+
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+	return *p == data;
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+}
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+
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+void devm_led_classdev_flash_unregister(struct device *dev,
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+					struct led_classdev_flash *fled_cdev)
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+{
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+	WARN_ON(devres_release(dev,
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+			       devm_led_classdev_flash_release,
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+			       devm_led_classdev_flash_match, fled_cdev));
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+}
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+EXPORT_SYMBOL_GPL(devm_led_classdev_flash_unregister);
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+
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 static void led_clamp_align(struct led_flash_setting *s)
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 {
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 	u32 v, offset;