diff --git a/libc/kernel/common/linux/akm8976.h b/libc/kernel/common/linux/akm8976.h
index a5aa68e..84ac803 100644
--- a/libc/kernel/common/linux/akm8976.h
+++ b/libc/kernel/common/linux/akm8976.h
@@ -7,83 +7,90 @@
  ***   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 AKM8976_H
 #define AKM8976_H
-
 #include <linux/ioctl.h>
-
 #define AKECS_MODE_MEASURE 0x00  
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define AKECS_MODE_PFFD 0x01  
 #define AKECS_MODE_E2P_READ 0x02  
 #define AKECS_MODE_POWERDOWN 0x03  
-
 #define AKECS_MODE_MEASURE_SNG 0x10  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define AKECS_MODE_MEASURE_SEQ 0x11  
-
 #define CSPEC_AINT 0x01  
 #define CSPEC_SNG_NUM 0x01  
 #define CSPEC_SEQ_NUM 0x02  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define CSPEC_SFRQ_32 0x00  
 #define CSPEC_SFRQ_64 0x01  
 #define CSPEC_MCS 0x07  
 #define CSPEC_MKS 0x01  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define CSPEC_INTEN 0x01  
-
 #define RBUFF_SIZE 31  
 #define MAX_CALI_SIZE 0x1000U  
-
 #define AKECS_REG_ST 0xC0
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define AKECS_REG_TMPS 0xC1
 #define AKECS_REG_MS1 0xE0
 #define AKECS_REG_MS2 0xE1
 #define AKECS_REG_MS3 0xE2
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define AKMIO 0xA1
-
 #define ECS_IOCTL_INIT _IO(AKMIO, 0x01)
 #define ECS_IOCTL_WRITE _IOW(AKMIO, 0x02, char[5])
 #define ECS_IOCTL_READ _IOWR(AKMIO, 0x03, char[5])
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define ECS_IOCTL_RESET _IO(AKMIO, 0x04)
 #define ECS_IOCTL_INT_STATUS _IO(AKMIO, 0x05)
 #define ECS_IOCTL_FFD_STATUS _IO(AKMIO, 0x06)
 #define ECS_IOCTL_SET_MODE _IOW(AKMIO, 0x07, short)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define ECS_IOCTL_GETDATA _IOR(AKMIO, 0x08, char[RBUFF_SIZE+1])
 #define ECS_IOCTL_GET_NUMFRQ _IOR(AKMIO, 0x09, char[2])
 #define ECS_IOCTL_SET_PERST _IO(AKMIO, 0x0A)
 #define ECS_IOCTL_SET_G0RST _IO(AKMIO, 0x0B)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define ECS_IOCTL_SET_YPR _IOW(AKMIO, 0x0C, short[12])
 #define ECS_IOCTL_GET_OPEN_STATUS _IOR(AKMIO, 0x0D, int)
 #define ECS_IOCTL_GET_CLOSE_STATUS _IOR(AKMIO, 0x0E, int)
 #define ECS_IOCTL_GET_CALI_DATA _IOR(AKMIO, 0x0F, char[MAX_CALI_SIZE])
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define ECS_IOCTL_GET_DELAY _IOR(AKMIO, 0x30, short)
-
 #define ECS_IOCTL_APP_SET_MODE _IOW(AKMIO, 0x10, short)
 #define ECS_IOCTL_APP_SET_MFLAG _IOW(AKMIO, 0x11, short)
 #define ECS_IOCTL_APP_GET_MFLAG _IOW(AKMIO, 0x12, short)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #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_TFLAG _IOR(AKMIO, 0x15, short)
 #define ECS_IOCTL_APP_GET_TFLAG _IOR(AKMIO, 0x16, short)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define ECS_IOCTL_APP_RESET_PEDOMETER _IO(AKMIO, 0x17)
 #define ECS_IOCTL_APP_SET_DELAY _IOW(AKMIO, 0x18, short)
 #define ECS_IOCTL_APP_GET_DELAY ECS_IOCTL_GET_DELAY
 #define ECS_IOCTL_APP_SET_MVFLAG _IOW(AKMIO, 0x19, short)  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define ECS_IOCTL_APP_GET_MVFLAG _IOR(AKMIO, 0x1A, short)  
-
 #define ECS_IOCTL_SET_STEP_CNT _IOW(AKMIO, 0x20, short)
-
 #define ECS_RST 146  
 #define ECS_CLK_ON 155  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define ECS_INTR 161  
-
 struct akm8976_platform_data {
  int reset;
  int clk_on;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  int intr;
 };
-
 #endif
-