From 95099d4622f8cb224d94e314c7a8e0df60b13f87 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Sat, 09 Dec 2023 08:38:01 +0000
Subject: [PATCH] enable docker ppp

---
 kernel/drivers/acpi/acpi_configfs.c |   49 ++++++++++++++++++++++++-------------------------
 1 files changed, 24 insertions(+), 25 deletions(-)

diff --git a/kernel/drivers/acpi/acpi_configfs.c b/kernel/drivers/acpi/acpi_configfs.c
index c032555..3a14859 100644
--- a/kernel/drivers/acpi/acpi_configfs.c
+++ b/kernel/drivers/acpi/acpi_configfs.c
@@ -1,11 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * ACPI configfs support
  *
  * Copyright (c) 2016 Intel Corporation
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 as published by
- * the Free Software Foundation.
  */
 
 #define pr_fmt(fmt) "ACPI configfs: " fmt
@@ -14,6 +11,7 @@
 #include <linux/module.h>
 #include <linux/configfs.h>
 #include <linux/acpi.h>
+#include <linux/security.h>
 
 #include "acpica/accommon.h"
 #include "acpica/actables.h"
@@ -31,7 +29,10 @@
 {
 	const struct acpi_table_header *header = data;
 	struct acpi_table *table;
-	int ret;
+	int ret = security_locked_down(LOCKDOWN_ACPI_TABLES);
+
+	if (ret)
+		return ret;
 
 	table = container_of(cfg, struct acpi_table, cfg);
 
@@ -56,11 +57,7 @@
 	if (!table->header)
 		return -ENOMEM;
 
-	ACPI_INFO(("Host-directed Dynamic ACPI Table Load:"));
-	ret = acpi_tb_install_and_load_table(
-			ACPI_PTR_TO_PHYSADDR(table->header),
-			ACPI_TABLE_ORIGIN_EXTERNAL_VIRTUAL, FALSE,
-			&table->index);
+	ret = acpi_load_table(table->header, &table->index);
 	if (ret) {
 		kfree(table->header);
 		table->header = NULL;
@@ -97,22 +94,22 @@
 
 CONFIGFS_BIN_ATTR(acpi_table_, aml, NULL, MAX_ACPI_TABLE_SIZE);
 
-struct configfs_bin_attribute *acpi_table_bin_attrs[] = {
+static struct configfs_bin_attribute *acpi_table_bin_attrs[] = {
 	&acpi_table_attr_aml,
 	NULL,
 };
 
-ssize_t acpi_table_signature_show(struct config_item *cfg, char *str)
+static ssize_t acpi_table_signature_show(struct config_item *cfg, char *str)
 {
 	struct acpi_table_header *h = get_header(cfg);
 
 	if (!h)
 		return -EINVAL;
 
-	return sprintf(str, "%.*s\n", ACPI_NAME_SIZE, h->signature);
+	return sprintf(str, "%.*s\n", ACPI_NAMESEG_SIZE, h->signature);
 }
 
-ssize_t acpi_table_length_show(struct config_item *cfg, char *str)
+static ssize_t acpi_table_length_show(struct config_item *cfg, char *str)
 {
 	struct acpi_table_header *h = get_header(cfg);
 
@@ -122,7 +119,7 @@
 	return sprintf(str, "%d\n", h->length);
 }
 
-ssize_t acpi_table_revision_show(struct config_item *cfg, char *str)
+static ssize_t acpi_table_revision_show(struct config_item *cfg, char *str)
 {
 	struct acpi_table_header *h = get_header(cfg);
 
@@ -132,7 +129,7 @@
 	return sprintf(str, "%d\n", h->revision);
 }
 
-ssize_t acpi_table_oem_id_show(struct config_item *cfg, char *str)
+static ssize_t acpi_table_oem_id_show(struct config_item *cfg, char *str)
 {
 	struct acpi_table_header *h = get_header(cfg);
 
@@ -142,7 +139,7 @@
 	return sprintf(str, "%.*s\n", ACPI_OEM_ID_SIZE, h->oem_id);
 }
 
-ssize_t acpi_table_oem_table_id_show(struct config_item *cfg, char *str)
+static ssize_t acpi_table_oem_table_id_show(struct config_item *cfg, char *str)
 {
 	struct acpi_table_header *h = get_header(cfg);
 
@@ -152,7 +149,7 @@
 	return sprintf(str, "%.*s\n", ACPI_OEM_TABLE_ID_SIZE, h->oem_table_id);
 }
 
-ssize_t acpi_table_oem_revision_show(struct config_item *cfg, char *str)
+static ssize_t acpi_table_oem_revision_show(struct config_item *cfg, char *str)
 {
 	struct acpi_table_header *h = get_header(cfg);
 
@@ -162,18 +159,19 @@
 	return sprintf(str, "%d\n", h->oem_revision);
 }
 
-ssize_t acpi_table_asl_compiler_id_show(struct config_item *cfg, char *str)
+static ssize_t acpi_table_asl_compiler_id_show(struct config_item *cfg,
+					       char *str)
 {
 	struct acpi_table_header *h = get_header(cfg);
 
 	if (!h)
 		return -EINVAL;
 
-	return sprintf(str, "%.*s\n", ACPI_NAME_SIZE, h->asl_compiler_id);
+	return sprintf(str, "%.*s\n", ACPI_NAMESEG_SIZE, h->asl_compiler_id);
 }
 
-ssize_t acpi_table_asl_compiler_revision_show(struct config_item *cfg,
-					      char *str)
+static ssize_t acpi_table_asl_compiler_revision_show(struct config_item *cfg,
+						     char *str)
 {
 	struct acpi_table_header *h = get_header(cfg);
 
@@ -192,7 +190,7 @@
 CONFIGFS_ATTR_RO(acpi_table_, asl_compiler_id);
 CONFIGFS_ATTR_RO(acpi_table_, asl_compiler_revision);
 
-struct configfs_attribute *acpi_table_attrs[] = {
+static struct configfs_attribute *acpi_table_attrs[] = {
 	&acpi_table_attr_signature,
 	&acpi_table_attr_length,
 	&acpi_table_attr_revision,
@@ -229,10 +227,11 @@
 	struct acpi_table *table = container_of(cfg, struct acpi_table, cfg);
 
 	ACPI_INFO(("Host-directed Dynamic ACPI Table Unload"));
-	acpi_tb_unload_table(table->index);
+	acpi_unload_table(table->index);
+	config_item_put(cfg);
 }
 
-struct configfs_group_operations acpi_table_group_ops = {
+static struct configfs_group_operations acpi_table_group_ops = {
 	.make_item = acpi_table_make_item,
 	.drop_item = acpi_table_drop_item,
 };

--
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