add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/acpi/ec_sys.c
..
..
@@ -1,11 +1,10 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /*
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  * ec_sys.c
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  *
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  * Copyright (C) 2010 SUSE Products GmbH/Novell
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  * Author:
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  *      Thomas Renninger <trenn@suse.de>
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- *
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- * This work is licensed under the terms of the GNU GPL, version 2.
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  */
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9
 
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 #include <linux/kernel.h>
..
..
@@ -108,52 +107,32 @@
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107
 	.llseek = default_llseek,
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 };
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109
 
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-static int acpi_ec_add_debugfs(struct acpi_ec *ec, unsigned int ec_device_count)
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+static void acpi_ec_add_debugfs(struct acpi_ec *ec, unsigned int ec_device_count)
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 {
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 	struct dentry *dev_dir;
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 	char name[64];
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 	umode_t mode = 0400;
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-	if (ec_device_count == 0) {
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+	if (ec_device_count == 0)
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 		acpi_ec_debugfs_dir = debugfs_create_dir("ec", NULL);
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-		if (!acpi_ec_debugfs_dir)
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-			return -ENOMEM;
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-	}
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118
 
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 	sprintf(name, "ec%u", ec_device_count);
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 	dev_dir = debugfs_create_dir(name, acpi_ec_debugfs_dir);
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-	if (!dev_dir) {
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-		if (ec_device_count != 0)
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-			goto error;
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-		return -ENOMEM;
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-	}
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-	if (!debugfs_create_x32("gpe", 0444, dev_dir, &first_ec->gpe))
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-		goto error;
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-	if (!debugfs_create_bool("use_global_lock", 0444, dev_dir,
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-				 &first_ec->global_lock))
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-		goto error;
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+	debugfs_create_x32("gpe", 0444, dev_dir, &first_ec->gpe);
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+	debugfs_create_bool("use_global_lock", 0444, dev_dir,
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+			    &first_ec->global_lock);
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 	if (write_support)
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 		mode = 0600;
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-	if (!debugfs_create_file("io", mode, dev_dir, ec, &acpi_ec_io_ops))
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-		goto error;
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-
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-	return 0;
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-
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-error:
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-	debugfs_remove_recursive(acpi_ec_debugfs_dir);
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-	return -ENOMEM;
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+	debugfs_create_file("io", mode, dev_dir, ec, &acpi_ec_io_ops);
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 }
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130
 
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 static int __init acpi_ec_sys_init(void)
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 {
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-	int err = 0;
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 	if (first_ec)
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-		err = acpi_ec_add_debugfs(first_ec, 0);
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-	else
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-		err = -ENODEV;
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-	return err;
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+		acpi_ec_add_debugfs(first_ec, 0);
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+	return 0;
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136
 }
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137
 
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 static void __exit acpi_ec_sys_exit(void)