diff --git a/libc/kernel/common/linux/telephony.h b/libc/kernel/common/linux/telephony.h
index 0c1d83d..f4c6d63 100644
--- a/libc/kernel/common/linux/telephony.h
+++ b/libc/kernel/common/linux/telephony.h
@@ -7,166 +7,184 @@
  ***   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 TELEPHONY_H
 #define TELEPHONY_H
-
 #define TELEPHONY_VERSION 3013
-
 #define PHONE_VENDOR_IXJ 1
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define PHONE_VENDOR_QUICKNET PHONE_VENDOR_IXJ
 #define PHONE_VENDOR_VOICETRONIX 2
 #define PHONE_VENDOR_ACULAB 3
 #define PHONE_VENDOR_DIGI 4
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define PHONE_VENDOR_FRANKLIN 5
-
 #define QTI_PHONEJACK 100
 #define QTI_LINEJACK 300
 #define QTI_PHONEJACK_LITE 400
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define QTI_PHONEJACK_PCI 500
 #define QTI_PHONECARD 600
-
 typedef enum {
  vendor = 0,
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  device,
  port,
  codec,
  dsp
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 } phone_cap;
-
 struct phone_capability {
  char desc[80];
  phone_cap captype;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  int cap;
  int handle;
 };
-
 typedef enum {
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  pots = 0,
  pstn,
  handset,
  speaker
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 } phone_ports;
-
 #define PHONE_CAPABILITIES _IO ('q', 0x80)
 #define PHONE_CAPABILITIES_LIST _IOR ('q', 0x81, struct phone_capability *)
 #define PHONE_CAPABILITIES_CHECK _IOW ('q', 0x82, struct phone_capability *)
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 typedef struct {
  char month[3];
  char day[3];
  char hour[3];
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  char min[3];
  int numlen;
  char number[11];
  int namelen;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  char name[80];
 } PHONE_CID;
-
 #define PHONE_RING _IO ('q', 0x83)
 #define PHONE_HOOKSTATE _IO ('q', 0x84)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define PHONE_MAXRINGS _IOW ('q', 0x85, char)
 #define PHONE_RING_CADENCE _IOW ('q', 0x86, short)
 #define OLD_PHONE_RING_START _IO ('q', 0x87)
 #define PHONE_RING_START _IOW ('q', 0x87, PHONE_CID *)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define PHONE_RING_STOP _IO ('q', 0x88)
-
 #define USA_RING_CADENCE 0xC0C0
-
 #define PHONE_REC_CODEC _IOW ('q', 0x89, int)
 #define PHONE_REC_START _IO ('q', 0x8A)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define PHONE_REC_STOP _IO ('q', 0x8B)
 #define PHONE_REC_DEPTH _IOW ('q', 0x8C, int)
 #define PHONE_FRAME _IOW ('q', 0x8D, int)
 #define PHONE_REC_VOLUME _IOW ('q', 0x8E, int)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define PHONE_REC_VOLUME_LINEAR _IOW ('q', 0xDB, int)
 #define PHONE_REC_LEVEL _IO ('q', 0x8F)
-
 #define PHONE_PLAY_CODEC _IOW ('q', 0x90, int)
 #define PHONE_PLAY_START _IO ('q', 0x91)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define PHONE_PLAY_STOP _IO ('q', 0x92)
 #define PHONE_PLAY_DEPTH _IOW ('q', 0x93, int)
 #define PHONE_PLAY_VOLUME _IOW ('q', 0x94, int)
 #define PHONE_PLAY_VOLUME_LINEAR _IOW ('q', 0xDC, int)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define PHONE_PLAY_LEVEL _IO ('q', 0x95)
 #define PHONE_DTMF_READY _IOR ('q', 0x96, int)
 #define PHONE_GET_DTMF _IOR ('q', 0x97, int)
 #define PHONE_GET_DTMF_ASCII _IOR ('q', 0x98, int)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define PHONE_DTMF_OOB _IOW ('q', 0x99, int)
 #define PHONE_EXCEPTION _IOR ('q', 0x9A, int)
 #define PHONE_PLAY_TONE _IOW ('q', 0x9B, char)
 #define PHONE_SET_TONE_ON_TIME _IOW ('q', 0x9C, int)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define PHONE_SET_TONE_OFF_TIME _IOW ('q', 0x9D, int)
 #define PHONE_GET_TONE_ON_TIME _IO ('q', 0x9E)
 #define PHONE_GET_TONE_OFF_TIME _IO ('q', 0x9F)
 #define PHONE_GET_TONE_STATE _IO ('q', 0xA0)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define PHONE_BUSY _IO ('q', 0xA1)
 #define PHONE_RINGBACK _IO ('q', 0xA2)
 #define PHONE_DIALTONE _IO ('q', 0xA3)
 #define PHONE_CPT_STOP _IO ('q', 0xA4)
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define PHONE_PSTN_SET_STATE _IOW ('q', 0xA4, int)
 #define PHONE_PSTN_GET_STATE _IO ('q', 0xA5)
-
 #define PSTN_ON_HOOK 0
 #define PSTN_RINGING 1
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define PSTN_OFF_HOOK 2
 #define PSTN_PULSE_DIAL 3
-
 #define PHONE_WINK_DURATION _IOW ('q', 0xA6, int)
 #define PHONE_WINK _IOW ('q', 0xAA, int)
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 typedef enum {
  G723_63 = 1,
  G723_53 = 2,
  TS85 = 3,
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  TS48 = 4,
  TS41 = 5,
  G728 = 6,
  G729 = 7,
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  ULAW = 8,
  ALAW = 9,
  LINEAR16 = 10,
  LINEAR8 = 11,
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  WSS = 12,
  G729B = 13
 } phone_codec;
-
 struct phone_codec_data
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 {
  phone_codec type;
  unsigned short buf_min, buf_opt, buf_max;
 };
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define PHONE_QUERY_CODEC _IOWR ('q', 0xA7, struct phone_codec_data *)
 #define PHONE_PSTN_LINETEST _IO ('q', 0xA8)
-
 #define PHONE_VAD _IOW ('q', 0xA9, int)
-
 struct phone_except
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 {
  unsigned int dtmf_ready:1;
  unsigned int hookstate:1;
  unsigned int pstn_ring:1;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned int caller_id:1;
  unsigned int pstn_wink:1;
  unsigned int f0:1;
  unsigned int f1:1;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned int f2:1;
  unsigned int f3:1;
  unsigned int flash:1;
  unsigned int fc0:1;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned int fc1:1;
  unsigned int fc2:1;
  unsigned int fc3:1;
  unsigned int reserved:18;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 };
-
 union telephony_exception {
  struct phone_except bits;
  unsigned int bytes;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 };
-
 #endif
-