diff --git a/libc/kernel/common/linux/akm8975.h b/libc/kernel/common/linux/akm8975.h
index 1815f75..3e68ab5 100644
--- a/libc/kernel/common/linux/akm8975.h
+++ b/libc/kernel/common/linux/akm8975.h
@@ -7,66 +7,73 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef AKM8975_H
 #define AKM8975_H
-
 #include <linux/ioctl.h>
-
 #define AK8975_MODE_SNG_MEASURE 0x01
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define AK8975_MODE_SELF_TEST 0x08
 #define AK8975_MODE_FUSE_ACCESS 0x0F
 #define AK8975_MODE_POWER_DOWN 0x00
-
 #define RBUFF_SIZE 8  
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define AK8975_REG_WIA 0x00
 #define AK8975_REG_INFO 0x01
 #define AK8975_REG_ST1 0x02
 #define AK8975_REG_HXL 0x03
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define AK8975_REG_HXH 0x04
 #define AK8975_REG_HYL 0x05
 #define AK8975_REG_HYH 0x06
 #define AK8975_REG_HZL 0x07
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define AK8975_REG_HZH 0x08
 #define AK8975_REG_ST2 0x09
 #define AK8975_REG_CNTL 0x0A
 #define AK8975_REG_RSV 0x0B
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define AK8975_REG_ASTC 0x0C
 #define AK8975_REG_TS1 0x0D
 #define AK8975_REG_TS2 0x0E
 #define AK8975_REG_I2CDIS 0x0F
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define AK8975_FUSE_ASAX 0x10
 #define AK8975_FUSE_ASAY 0x11
 #define AK8975_FUSE_ASAZ 0x12
-
 #define AKMIO 0xA1
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define ECS_IOCTL_WRITE _IOW(AKMIO, 0x02, char[5])
 #define ECS_IOCTL_READ _IOWR(AKMIO, 0x03, char[5])
 #define ECS_IOCTL_GETDATA _IOR(AKMIO, 0x08, char[RBUFF_SIZE])
 #define ECS_IOCTL_SET_YPR _IOW(AKMIO, 0x0C, short[12])
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define ECS_IOCTL_GET_OPEN_STATUS _IOR(AKMIO, 0x0D, int)
 #define ECS_IOCTL_GET_CLOSE_STATUS _IOR(AKMIO, 0x0E, int)
 #define ECS_IOCTL_GET_DELAY _IOR(AKMIO, 0x30, short)
-
 #define ECS_IOCTL_APP_SET_MFLAG _IOW(AKMIO, 0x11, short)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define ECS_IOCTL_APP_GET_MFLAG _IOW(AKMIO, 0x12, short)
 #define ECS_IOCTL_APP_SET_AFLAG _IOW(AKMIO, 0x13, short)
 #define ECS_IOCTL_APP_GET_AFLAG _IOR(AKMIO, 0x14, short)
 #define ECS_IOCTL_APP_SET_DELAY _IOW(AKMIO, 0x18, short)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define ECS_IOCTL_APP_GET_DELAY ECS_IOCTL_GET_DELAY
 #define ECS_IOCTL_APP_SET_MVFLAG _IOW(AKMIO, 0x19, short)  
 #define ECS_IOCTL_APP_GET_MVFLAG _IOR(AKMIO, 0x1A, short)  
 #define ECS_IOCTL_APP_SET_TFLAG _IOR(AKMIO, 0x15, short)
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define ECS_INTR 140
-
 struct akm8975_platform_data {
  int intr;
 };
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #endif
-