add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/input/keyboard/mtk-pmic-keys.c
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@@ -1,31 +1,21 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /*
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  * Copyright (C) 2017 MediaTek, Inc.
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  *
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  * Author: Chen Zhong <chen.zhong@mediatek.com>
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- *
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- * This software is licensed under the terms of the GNU General Public
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- * License version 2, as published by the Free Software Foundation, and
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- * may be copied, distributed, and modified under those terms.
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- *
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- * This program is distributed in the hope that it will be useful,
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- * but WITHOUT ANY WARRANTY; without even the implied warranty of
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- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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- * GNU General Public License for more details.
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- *
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  */
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-#include <linux/module.h>
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-#include <linux/kernel.h>
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 #include <linux/input.h>
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 #include <linux/interrupt.h>
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-#include <linux/platform_device.h>
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 #include <linux/kernel.h>
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-#include <linux/of.h>
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-#include <linux/of_device.h>
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-#include <linux/regmap.h>
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 #include <linux/mfd/mt6323/registers.h>
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-#include <linux/mfd/mt6397/registers.h>
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 #include <linux/mfd/mt6397/core.h>
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+#include <linux/mfd/mt6397/registers.h>
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+#include <linux/module.h>
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+#include <linux/of_device.h>
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+#include <linux/of.h>
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+#include <linux/platform_device.h>
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+#include <linux/regmap.h>
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 #define MTK_PMIC_PWRKEY_RST_EN_MASK	0x1
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 #define MTK_PMIC_PWRKEY_RST_EN_SHIFT	6
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@@ -287,8 +277,10 @@
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 		keys->keys[index].regs = &mtk_pmic_regs->keys_regs[index];
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 		keys->keys[index].irq = platform_get_irq(pdev, index);
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-		if (keys->keys[index].irq < 0)
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+		if (keys->keys[index].irq < 0) {
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+			of_node_put(child);
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 			return keys->keys[index].irq;
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+		}
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 		error = of_property_read_u32(child,
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 			"linux,keycodes", &keys->keys[index].keycode);
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@@ -296,6 +288,7 @@
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 			dev_err(keys->dev,
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 				"failed to read key:%d linux,keycode property: %d\n",
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 				index, error);
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+			of_node_put(child);
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 			return error;
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 		}
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@@ -303,8 +296,10 @@
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 			keys->keys[index].wakeup = true;
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 		error = mtk_pmic_key_setup(keys, &keys->keys[index]);
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-		if (error)
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+		if (error) {
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+			of_node_put(child);
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 			return error;
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+		}
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 		index++;
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 	}