diff --git a/debuggerd/debuggerd.cpp b/debuggerd/debuggerd.cpp
index c39aaf6..a2b164e 100644
--- a/debuggerd/debuggerd.cpp
+++ b/debuggerd/debuggerd.cpp
@@ -46,12 +46,12 @@
 #include "tombstone.h"
 #include "utility.h"
 
-typedef struct {
+struct debugger_request_t {
   debugger_action_t action;
   pid_t pid, tid;
   uid_t uid, gid;
   uintptr_t abort_msg_address;
-} debugger_request_t;
+};
 
 static int write_string(const char* file, const char* string) {
   int len;
@@ -116,7 +116,7 @@
       dit,_,dit,_,dit,___,dah,_,dah,_,dah,___,dit,_,dit,_,dit,_______
     };
     size_t s = 0;
-    struct input_event e;
+    input_event e;
     bool done = false;
     init_debug_led();
     enable_debug_led();
@@ -176,8 +176,8 @@
 }
 
 static int read_request(int fd, debugger_request_t* out_request) {
-  struct ucred cr;
-  int len = sizeof(cr);
+  ucred cr;
+  socklen_t len = sizeof(cr);
   int status = getsockopt(fd, SOL_SOCKET, SO_PEERCRED, &cr, &len);
   if (status != 0) {
     LOG("cannot get credentials\n");
@@ -187,7 +187,7 @@
   XLOG("reading tid\n");
   fcntl(fd, F_SETFL, O_NONBLOCK);
 
-  struct pollfd pollfds[1];
+  pollfd pollfds[1];
   pollfds[0].fd = fd;
   pollfds[0].events = POLLIN;
   pollfds[0].revents = 0;
@@ -441,13 +441,11 @@
   LOG("debuggerd: " __DATE__ " " __TIME__ "\n");
 
   for (;;) {
-    struct sockaddr addr;
-    socklen_t alen;
-    int fd;
+    sockaddr addr;
+    socklen_t alen = sizeof(addr);
 
-    alen = sizeof(addr);
     XLOG("waiting for connection\n");
-    fd = accept(s, &addr, &alen);
+    int fd = accept(s, &addr, &alen);
     if (fd < 0) {
       XLOG("accept failed: %s\n", strerror(errno));
       continue;
diff --git a/libbacktrace/BacktraceMap.cpp b/libbacktrace/BacktraceMap.cpp
index 6320800..6eb290d 100644
--- a/libbacktrace/BacktraceMap.cpp
+++ b/libbacktrace/BacktraceMap.cpp
@@ -93,7 +93,8 @@
   }
 
   ALOGV("Parsed map: start=%p, end=%p, flags=%x, name=%s",
-        map->start, map->end, map->flags, map->name.c_str());
+        reinterpret_cast<void*>(map->start), reinterpret_cast<void*>(map->end),
+        map->flags, map->name.c_str());
   return true;
 }
 
diff --git a/libziparchive/zip_archive.cc b/libziparchive/zip_archive.cc
index a23d4ae..8ef0962 100644
--- a/libziparchive/zip_archive.cc
+++ b/libziparchive/zip_archive.cc
@@ -279,7 +279,7 @@
     ent = (ent + 1) & (hash_table_size - 1);
   }
 
-  ALOGV("Zip: Unable to find entry %.*s", name_length, name);
+  ALOGV("Zip: Unable to find entry %.*s", length, name);
   return kEntryNotFound;
 }
 
diff --git a/toolbox/nandread.c b/toolbox/nandread.c
index d43b2fe..971c232 100644
--- a/toolbox/nandread.c
+++ b/toolbox/nandread.c
@@ -177,11 +177,7 @@
 
     if (rawmode) {
         rawmode = mtdinfo.oobsize;
-#if !defined(MTD_STUPID_LOCK) /* using uapi kernel headers */
         ret = ioctl(fd, MTDFILEMODE, MTD_FILE_MODE_RAW);
-#else /* still using old kernel headers */
-        ret = ioctl(fd, MTDFILEMODE, MTD_MODE_RAW);
-#endif
         if (ret) {
             fprintf(stderr, "failed set raw mode for %s, %s\n",
                     devname, strerror(errno));