diff --git a/include/cutils/logger.h b/include/cutils/logger.h
index ccb0cac..b60f7ad 100644
--- a/include/cutils/logger.h
+++ b/include/cutils/logger.h
@@ -11,13 +11,7 @@
 #define _UTILS_LOGGER_H
 
 #include <stdint.h>
-#include <sys/types.h>
 
-/*
- * The userspace structure for version 1 of the logger_entry ABI.
- * This structure is returned to userspace by the kernel logger
- * driver unless an upgrade to a newer ABI version is requested.
- */
 struct logger_entry {
     uint16_t    len;    /* length of the payload */
     uint16_t    __pad;  /* no matter what, we get 2 bytes of padding */
@@ -28,41 +22,14 @@
     char        msg[0]; /* the entry's payload */
 };
 
-/*
- * The userspace structure for version 2 of the logger_entry ABI.
- * This structure is returned to userspace if ioctl(LOGGER_SET_VERSION)
- * is called with version==2
- */
-struct logger_entry_v2 {
-    uint16_t    len;       /* length of the payload */
-    uint16_t    hdr_size;  /* sizeof(struct logger_entry_v2) */
-    int32_t     pid;       /* generating process's pid */
-    int32_t     tid;       /* generating process's tid */
-    int32_t     sec;       /* seconds since Epoch */
-    int32_t     nsec;      /* nanoseconds */
-    uid_t       euid;      /* effective UID of logger */
-    char        msg[0];    /* the entry's payload */
-};
-
 #define LOGGER_LOG_MAIN		"log/main"
 #define LOGGER_LOG_RADIO	"log/radio"
 #define LOGGER_LOG_EVENTS	"log/events"
 #define LOGGER_LOG_SYSTEM	"log/system"
 
-/*
- * The maximum size of the log entry payload that can be
- * written to the kernel logger driver. An attempt to write
- * more than this amount to /dev/log/* will result in a
- * truncated log entry.
- */
-#define LOGGER_ENTRY_MAX_PAYLOAD	4076
-
-/*
- * The maximum size of a log entry which can be read from the
- * kernel logger driver. An attempt to read less than this amount
- * may result in read() returning EINVAL.
- */
-#define LOGGER_ENTRY_MAX_LEN		(5*1024)
+#define LOGGER_ENTRY_MAX_LEN		(4*1024)
+#define LOGGER_ENTRY_MAX_PAYLOAD	\
+	(LOGGER_ENTRY_MAX_LEN - sizeof(struct logger_entry))
 
 #ifdef HAVE_IOCTL
 
@@ -74,8 +41,6 @@
 #define LOGGER_GET_LOG_LEN		_IO(__LOGGERIO, 2) /* used log len */
 #define LOGGER_GET_NEXT_ENTRY_LEN	_IO(__LOGGERIO, 3) /* next entry len */
 #define LOGGER_FLUSH_LOG		_IO(__LOGGERIO, 4) /* flush log */
-#define LOGGER_GET_VERSION		_IO(__LOGGERIO, 5) /* abi version */
-#define LOGGER_SET_VERSION		_IO(__LOGGERIO, 6) /* abi version */
 
 #endif // HAVE_IOCTL