From f70575805708cabdedea7498aaa3f710fde4d920 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Wed, 31 Jan 2024 03:29:01 +0000
Subject: [PATCH] add lvds1024*800
---
kernel/drivers/acpi/custom_method.c | 18 ++++++++----------
1 files changed, 8 insertions(+), 10 deletions(-)
diff --git a/kernel/drivers/acpi/custom_method.c b/kernel/drivers/acpi/custom_method.c
index 6130418..4058e02 100644
--- a/kernel/drivers/acpi/custom_method.c
+++ b/kernel/drivers/acpi/custom_method.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* custom_method.c - debugfs interface for customizing ACPI control method
*/
@@ -8,11 +9,10 @@
#include <linux/uaccess.h>
#include <linux/debugfs.h>
#include <linux/acpi.h>
+#include <linux/security.h>
#include "internal.h"
-#define _COMPONENT ACPI_SYSTEM_COMPONENT
-ACPI_MODULE_NAME("custom_method");
MODULE_LICENSE("GPL");
static struct dentry *cm_dentry;
@@ -28,6 +28,11 @@
struct acpi_table_header table;
acpi_status status;
+ int ret;
+
+ ret = security_locked_down(LOCKDOWN_ACPI_TABLES);
+ if (ret)
+ return ret;
if (!(*ppos)) {
/* parse the table header to get the table length */
@@ -84,21 +89,14 @@
static int __init acpi_custom_method_init(void)
{
- if (acpi_debugfs_dir == NULL)
- return -ENOENT;
-
cm_dentry = debugfs_create_file("custom_method", S_IWUSR,
acpi_debugfs_dir, NULL, &cm_fops);
- if (cm_dentry == NULL)
- return -ENODEV;
-
return 0;
}
static void __exit acpi_custom_method_exit(void)
{
- if (cm_dentry)
- debugfs_remove(cm_dentry);
+ debugfs_remove(cm_dentry);
}
module_init(acpi_custom_method_init);
--
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