add dts config

hc

2023-12-06 08f87f769b595151be1afeff53e144f543faa614

 kernel/drivers/acpi/acpi_dbg.c
..
..
@@ -1,12 +1,9 @@
1
+// SPDX-License-Identifier: GPL-2.0-only
1
2
 /*
2
3
  * ACPI AML interfacing support
3
4
  *
4
5
  * Copyright (C) 2015, Intel Corporation
5
6
  * Authors: Lv Zheng <lv.zheng@intel.com>
6
- *
7
- * This program is free software; you can redistribute it and/or modify
8
- * it under the terms of the GNU General Public License version 2 as
9
- * published by the Free Software Foundation.
10
7
  */
11
8
 
12
9
 /* #define DEBUG */
..
..
@@ -390,7 +387,7 @@
390
387
 	return size > 0 ? size : ret;
391
388
 }
392
389
 
393
-static int acpi_aml_thread(void *unsed)
390
+static int acpi_aml_thread(void *unused)
394
391
 {
395
392
 	acpi_osd_exec_callback function = NULL;
396
393
 	void *context;
..
..
@@ -614,7 +611,7 @@
614
611
 
615
612
 	if (!count)
616
613
 		return 0;
617
-	if (!access_ok(VERIFY_WRITE, buf, count))
614
+	if (!access_ok(buf, count))
618
615
 		return -EFAULT;
619
616
 
620
617
 	while (count > 0) {
..
..
@@ -684,7 +681,7 @@
684
681
 
685
682
 	if (!count)
686
683
 		return 0;
687
-	if (!access_ok(VERIFY_READ, buf, count))
684
+	if (!access_ok(buf, count))
688
685
 		return -EFAULT;
689
686
 
690
687
 	while (count > 0) {
..
..
@@ -748,14 +745,9 @@
748
745
 	.notify_command_complete = acpi_aml_notify_command_complete,
749
746
 };
750
747
 
751
-int __init acpi_aml_init(void)
748
+static int __init acpi_aml_init(void)
752
749
 {
753
-	int ret = 0;
754
-
755
-	if (!acpi_debugfs_dir) {
756
-		ret = -ENOENT;
757
-		goto err_exit;
758
-	}
750
+	int ret;
759
751
 
760
752
 	if (acpi_disabled)
761
753
 		return -ENODEV;
..
..
@@ -765,36 +757,29 @@
765
757
 	init_waitqueue_head(&acpi_aml_io.wait);
766
758
 	acpi_aml_io.out_crc.buf = acpi_aml_io.out_buf;
767
759
 	acpi_aml_io.in_crc.buf = acpi_aml_io.in_buf;
760
+
768
761
 	acpi_aml_dentry = debugfs_create_file("acpidbg",
769
762
 					      S_IFREG | S_IRUGO | S_IWUSR,
770
763
 					      acpi_debugfs_dir, NULL,
771
764
 					      &acpi_aml_operations);
772
-	if (acpi_aml_dentry == NULL) {
773
-		ret = -ENODEV;
774
-		goto err_exit;
775
-	}
776
-	ret = acpi_register_debugger(THIS_MODULE, &acpi_aml_debugger);
777
-	if (ret)
778
-		goto err_fs;
779
-	acpi_aml_initialized = true;
780
765
 
781
-err_fs:
766
+	ret = acpi_register_debugger(THIS_MODULE, &acpi_aml_debugger);
782
767
 	if (ret) {
783
768
 		debugfs_remove(acpi_aml_dentry);
784
769
 		acpi_aml_dentry = NULL;
770
+		return ret;
785
771
 	}
786
-err_exit:
787
-	return ret;
772
+
773
+	acpi_aml_initialized = true;
774
+	return 0;
788
775
 }
789
776
 
790
-void __exit acpi_aml_exit(void)
777
+static void __exit acpi_aml_exit(void)
791
778
 {
792
779
 	if (acpi_aml_initialized) {
793
780
 		acpi_unregister_debugger(&acpi_aml_debugger);
794
-		if (acpi_aml_dentry) {
795
-			debugfs_remove(acpi_aml_dentry);
796
-			acpi_aml_dentry = NULL;
797
-		}
781
+		debugfs_remove(acpi_aml_dentry);
782
+		acpi_aml_dentry = NULL;
798
783
 		acpi_aml_initialized = false;
799
784
 	}
800
785
 }