add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/hid/hid-elan.c
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@@ -1,14 +1,10 @@
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+// SPDX-License-Identifier: GPL-2.0-or-later
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 /*
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  * HID Driver for ELAN Touchpad
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  *
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  * Currently only supports touchpad found on HP Pavilion X2 10
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  *
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  * Copyright (c) 2016 Alexandrov Stanislav <neko@nya.ai>
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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 of the GNU General Public License as published by the Free
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- * Software Foundation; either version 2 of the License, or (at your option)
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- * any later version.
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  */
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 #include <linux/hid.h>
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@@ -192,7 +188,6 @@
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 	ret = input_mt_init_slots(input, ELAN_MAX_FINGERS, INPUT_MT_POINTER);
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 	if (ret) {
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 		hid_err(hdev, "Failed to init elan MT slots: %d\n", ret);
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-		input_free_device(input);
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 		return ret;
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 	}
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@@ -204,7 +199,6 @@
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 		hid_err(hdev, "Failed to register elan input device: %d\n",
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 			ret);
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 		input_mt_destroy_slots(input);
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-		input_free_device(input);
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 		return ret;
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 	}
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@@ -395,7 +389,7 @@
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 	 * This byte sequence will enable multitouch mode and disable
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 	 * mouse emulation
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 	 */
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-	const unsigned char buf[] = { 0x0D, 0x00, 0x03, 0x21, 0x00 };
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+	static const unsigned char buf[] = { 0x0D, 0x00, 0x03, 0x21, 0x00 };
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 	unsigned char *dmabuf = kmemdup(buf, sizeof(buf), GFP_KERNEL);
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 	if (!dmabuf)
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@@ -499,7 +493,7 @@
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 		return 0;
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 	if (!drvdata->input) {
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-		hid_err(hdev, "Input device is not registred\n");
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+		hid_err(hdev, "Input device is not registered\n");
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 		ret = -ENAVAIL;
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 		goto err;
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 	}