Update Linux to v5.4.2
Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/drivers/acpi/acpi_dbg.c b/drivers/acpi/acpi_dbg.c
index f21c99e..7a265c2 100644
--- a/drivers/acpi/acpi_dbg.c
+++ b/drivers/acpi/acpi_dbg.c
@@ -1,12 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* ACPI AML interfacing support
*
* Copyright (C) 2015, Intel Corporation
* Authors: Lv Zheng <lv.zheng@intel.com>
- *
- * 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 DEBUG */
@@ -390,7 +387,7 @@
return size > 0 ? size : ret;
}
-static int acpi_aml_thread(void *unsed)
+static int acpi_aml_thread(void *unused)
{
acpi_osd_exec_callback function = NULL;
void *context;
@@ -614,7 +611,7 @@
if (!count)
return 0;
- if (!access_ok(VERIFY_WRITE, buf, count))
+ if (!access_ok(buf, count))
return -EFAULT;
while (count > 0) {
@@ -684,7 +681,7 @@
if (!count)
return 0;
- if (!access_ok(VERIFY_READ, buf, count))
+ if (!access_ok(buf, count))
return -EFAULT;
while (count > 0) {
@@ -750,48 +747,36 @@
int __init acpi_aml_init(void)
{
- int ret = 0;
-
- if (!acpi_debugfs_dir) {
- ret = -ENOENT;
- goto err_exit;
- }
+ int ret;
/* Initialize AML IO interface */
mutex_init(&acpi_aml_io.lock);
init_waitqueue_head(&acpi_aml_io.wait);
acpi_aml_io.out_crc.buf = acpi_aml_io.out_buf;
acpi_aml_io.in_crc.buf = acpi_aml_io.in_buf;
+
acpi_aml_dentry = debugfs_create_file("acpidbg",
S_IFREG | S_IRUGO | S_IWUSR,
acpi_debugfs_dir, NULL,
&acpi_aml_operations);
- if (acpi_aml_dentry == NULL) {
- ret = -ENODEV;
- goto err_exit;
- }
- ret = acpi_register_debugger(THIS_MODULE, &acpi_aml_debugger);
- if (ret)
- goto err_fs;
- acpi_aml_initialized = true;
-err_fs:
+ ret = acpi_register_debugger(THIS_MODULE, &acpi_aml_debugger);
if (ret) {
debugfs_remove(acpi_aml_dentry);
acpi_aml_dentry = NULL;
+ return ret;
}
-err_exit:
- return ret;
+
+ acpi_aml_initialized = true;
+ return 0;
}
void __exit acpi_aml_exit(void)
{
if (acpi_aml_initialized) {
acpi_unregister_debugger(&acpi_aml_debugger);
- if (acpi_aml_dentry) {
- debugfs_remove(acpi_aml_dentry);
- acpi_aml_dentry = NULL;
- }
+ debugfs_remove(acpi_aml_dentry);
+ acpi_aml_dentry = NULL;
acpi_aml_initialized = false;
}
}