diff --git a/adb/usb_vendors.c b/adb/usb_vendors.c
index ed86b34..b988115 100644
--- a/adb/usb_vendors.c
+++ b/adb/usb_vendors.c
@@ -123,6 +123,8 @@
 #define VENDOR_ID_INQ_MOBILE    0x2314
 // Sony's USB Vendor ID
 #define VENDOR_ID_SONY          0x054C
+// Lab126's USB Vendor ID
+#define VENDOR_ID_LAB126        0x1949
 // Yulong Coolpad's USB Vendor ID
 #define VENDOR_ID_YULONG_COOLPAD 0x1EBF
 
@@ -172,6 +174,7 @@
     VENDOR_ID_QUANTA,
     VENDOR_ID_INQ_MOBILE,
     VENDOR_ID_SONY,
+    VENDOR_ID_LAB126,
     VENDOR_ID_YULONG_COOLPAD,
 };
 
diff --git a/adb/usb_windows.c b/adb/usb_windows.c
index b216999..251bf17 100644
--- a/adb/usb_windows.c
+++ b/adb/usb_windows.c
@@ -255,7 +255,7 @@
 }
 
 int usb_write(usb_handle* handle, const void* data, int len) {
-  unsigned long time_out = 500 + len * 8;
+  unsigned long time_out = 5000;
   unsigned long written = 0;
   int ret;
 
@@ -300,7 +300,7 @@
 }
 
 int usb_read(usb_handle *handle, void* data, int len) {
-  unsigned long time_out = 500 + len * 8;
+  unsigned long time_out = 0;
   unsigned long read = 0;
   int ret;
 
@@ -322,7 +322,7 @@
 
         if (len == 0)
           return 0;
-      } else if (saved_errno != ERROR_SEM_TIMEOUT) {
+      } else {
         // assume ERROR_INVALID_HANDLE indicates we are disconnected
         if (saved_errno == ERROR_INVALID_HANDLE)
           usb_kick(handle);
diff --git a/debuggerd/utility.c b/debuggerd/utility.c
index 2ccf947..8eb52ba 100644
--- a/debuggerd/utility.c
+++ b/debuggerd/utility.c
@@ -267,13 +267,11 @@
      * Search for a match, or for a hole where the match would be.  The list
      * is backward from the file content, so it starts at high addresses.
      */
-    bool found = false;
     map_info_t* map = context->map_info_list;
     map_info_t *next = NULL;
     map_info_t *prev = NULL;
     while (map != NULL) {
         if (addr >= map->start && addr < map->end) {
-            found = true;
             next = map->next;
             break;
         } else if (addr >= map->end) {
diff --git a/init/builtins.c b/init/builtins.c
index a7e34a6..ac9585e 100644
--- a/init/builtins.c
+++ b/init/builtins.c
@@ -332,6 +332,7 @@
     unsigned flag;
 } mount_flags[] = {
     { "noatime",    MS_NOATIME },
+    { "noexec",     MS_NOEXEC },
     { "nosuid",     MS_NOSUID },
     { "nodev",      MS_NODEV },
     { "nodiratime", MS_NODIRATIME },
diff --git a/libpixelflinger/fixed.cpp b/libpixelflinger/fixed.cpp
index 5b92062..5094537 100644
--- a/libpixelflinger/fixed.cpp
+++ b/libpixelflinger/fixed.cpp
@@ -62,7 +62,8 @@
     int shift;
     x = gglRecipQNormalized(x, &shift);
     shift += 16-q;
-    x += 1L << (shift-1);   // rounding
+    if (shift > 0)
+        x += 1L << (shift-1);   // rounding
     x >>= shift;
     return x;
 }