diff --git a/hardware.c b/hardware.c
index f835fda..6713ea0 100644
--- a/hardware.c
+++ b/hardware.c
@@ -28,8 +28,13 @@
 #include <utils/Log.h>
 
 /** Base path of the hal modules */
+#if defined(__LP64__)
+#define HAL_LIBRARY_PATH1 "/system/lib64/hw"
+#define HAL_LIBRARY_PATH2 "/vendor/lib64/hw"
+#else
 #define HAL_LIBRARY_PATH1 "/system/lib/hw"
 #define HAL_LIBRARY_PATH2 "/vendor/lib/hw"
+#endif
 
 /**
  * There are a set of variant filename for modules. The form of the filename
diff --git a/include/hardware/bt_pan.h b/include/hardware/bt_pan.h
index c8b36b4..83e7949 100644
--- a/include/hardware/bt_pan.h
+++ b/include/hardware/bt_pan.h
@@ -40,8 +40,8 @@
 */
 typedef void (*btpan_connection_state_callback)(btpan_connection_state_t state, bt_status_t error,
                                                 const bt_bdaddr_t *bd_addr, int local_role, int remote_role);
-typedef void (*btpan_control_state_callback)(btpan_control_state_t state, bt_status_t error,
-                                            int local_role, const char* ifname);
+typedef void (*btpan_control_state_callback)(btpan_control_state_t state, int local_role,
+                                            bt_status_t error, const char* ifname);
 
 typedef struct {
     size_t size;
diff --git a/include/hardware/qemu_pipe.h b/include/hardware/qemu_pipe.h
index 1a67022..814b20b 100644
--- a/include/hardware/qemu_pipe.h
+++ b/include/hardware/qemu_pipe.h
@@ -66,6 +66,8 @@
     snprintf(buff, sizeof buff, "pipe:%s", pipeName);
 
     fd = open("/dev/qemu_pipe", O_RDWR);
+    if (fd < 0 && errno == ENOENT)
+        fd = open("/dev/goldfish_pipe", O_RDWR);
     if (fd < 0) {
         D("%s: Could not open /dev/qemu_pipe: %s", __FUNCTION__, strerror(errno));
         //errno = ENOSYS;
diff --git a/modules/audio/Android.mk b/modules/audio/Android.mk
index 49ed312..84d8203 100644
--- a/modules/audio/Android.mk
+++ b/modules/audio/Android.mk
@@ -27,6 +27,7 @@
 LOCAL_SRC_FILES := audio_hw.c
 LOCAL_SHARED_LIBRARIES := liblog libcutils
 LOCAL_MODULE_TAGS := optional
+LOCAL_32_BIT_ONLY := true
 
 include $(BUILD_SHARED_LIBRARY)
 
@@ -39,5 +40,6 @@
 LOCAL_SRC_FILES := audio_policy.c
 LOCAL_SHARED_LIBRARIES := liblog libcutils
 LOCAL_MODULE_TAGS := optional
+LOCAL_32_BIT_ONLY := true
 
 include $(BUILD_SHARED_LIBRARY)
diff --git a/modules/audio_remote_submix/Android.mk b/modules/audio_remote_submix/Android.mk
index 50c8cb2..d718c76 100644
--- a/modules/audio_remote_submix/Android.mk
+++ b/modules/audio_remote_submix/Android.mk
@@ -26,5 +26,6 @@
 LOCAL_SHARED_LIBRARIES := liblog libcutils libutils libnbaio
 LOCAL_STATIC_LIBRARIES := libmedia_helper
 LOCAL_MODULE_TAGS := optional
+LOCAL_32_BIT_ONLY := true
 include $(BUILD_SHARED_LIBRARY)
 
diff --git a/modules/gralloc/Android.mk b/modules/gralloc/Android.mk
index e1fd7d4..a4ffd20 100644
--- a/modules/gralloc/Android.mk
+++ b/modules/gralloc/Android.mk
@@ -26,8 +26,8 @@
 	gralloc.cpp 	\
 	framebuffer.cpp \
 	mapper.cpp
-	
+
 LOCAL_MODULE := gralloc.default
-LOCAL_CFLAGS:= -DLOG_TAG=\"gralloc\"
+LOCAL_CFLAGS:= -DLOG_TAG=\"gralloc\" -Wno-missing-field-initializers
 
 include $(BUILD_SHARED_LIBRARY)
diff --git a/modules/gralloc/framebuffer.cpp b/modules/gralloc/framebuffer.cpp
index 326f2ae..9d8513a 100644
--- a/modules/gralloc/framebuffer.cpp
+++ b/modules/gralloc/framebuffer.cpp
@@ -330,7 +330,7 @@
         if (status >= 0) {
             int stride = m->finfo.line_length / (m->info.bits_per_pixel >> 3);
             int format = (m->info.bits_per_pixel == 32)
-                         ? HAL_PIXEL_FORMAT_RGBX_8888
+                         ? (m->info.red.offset ? HAL_PIXEL_FORMAT_BGRA_8888 : HAL_PIXEL_FORMAT_RGBX_8888)
                          : HAL_PIXEL_FORMAT_RGB_565;
             const_cast<uint32_t&>(dev->device.flags) = 0;
             const_cast<uint32_t&>(dev->device.width) = m->info.xres;
diff --git a/modules/gralloc/gr.h b/modules/gralloc/gr.h
index 3a43aa7..732b6bc 100644
--- a/modules/gralloc/gr.h
+++ b/modules/gralloc/gr.h
@@ -18,11 +18,7 @@
 #define GR_H_
 
 #include <stdint.h>
-#ifdef HAVE_ANDROID_OS      // just want PAGE_SIZE define
-# include <asm/page.h>
-#else
-# include <sys/user.h>
-#endif
+#include <sys/user.h>
 #include <limits.h>
 #include <sys/cdefs.h>
 #include <hardware/gralloc.h>
diff --git a/modules/gralloc/gralloc.cpp b/modules/gralloc/gralloc.cpp
index f832f35..bdc789d 100644
--- a/modules/gralloc/gralloc.cpp
+++ b/modules/gralloc/gralloc.cpp
@@ -166,7 +166,7 @@
 }
 
 static int gralloc_alloc_buffer(alloc_device_t* dev,
-        size_t size, int usage, buffer_handle_t* pHandle)
+        size_t size, int /*usage*/, buffer_handle_t* pHandle)
 {
     int err = 0;
     int fd = -1;
diff --git a/modules/gralloc/gralloc_priv.h b/modules/gralloc/gralloc_priv.h
index 86a5d52..2cd1007 100644
--- a/modules/gralloc/gralloc_priv.h
+++ b/modules/gralloc/gralloc_priv.h
@@ -75,11 +75,13 @@
     int     offset;
 
     // FIXME: the attributes below should be out-of-line
-    int     base;
+    uint64_t base __attribute__((aligned(8)));
     int     pid;
 
 #ifdef __cplusplus
-    static const int sNumInts = 6;
+    static inline int sNumInts() {
+        return (((sizeof(private_handle_t) - sizeof(native_handle_t))/sizeof(int)) - sNumFds);
+    }
     static const int sNumFds = 1;
     static const int sMagic = 0x3141592;
 
@@ -88,7 +90,7 @@
         base(0), pid(getpid())
     {
         version = sizeof(native_handle);
-        numInts = sNumInts;
+        numInts = sNumInts();
         numFds = sNumFds;
     }
     ~private_handle_t() {
@@ -98,7 +100,7 @@
     static int validate(const native_handle* h) {
         const private_handle_t* hnd = (const private_handle_t*)h;
         if (!h || h->version != sizeof(native_handle) ||
-                h->numInts != sNumInts || h->numFds != sNumFds ||
+                h->numInts != sNumInts() || h->numFds != sNumFds ||
                 hnd->magic != sMagic)
         {
             ALOGE("invalid gralloc handle (at %p)", h);
diff --git a/modules/gralloc/mapper.cpp b/modules/gralloc/mapper.cpp
index 13baf2a..5a882e2 100644
--- a/modules/gralloc/mapper.cpp
+++ b/modules/gralloc/mapper.cpp
@@ -43,7 +43,7 @@
 
 /*****************************************************************************/
 
-static int gralloc_map(gralloc_module_t const* module,
+static int gralloc_map(gralloc_module_t const* /*module*/,
         buffer_handle_t handle,
         void** vaddr)
 {
@@ -56,7 +56,7 @@
             ALOGE("Could not mmap %s", strerror(errno));
             return -errno;
         }
-        hnd->base = intptr_t(mappedAddress) + hnd->offset;
+        hnd->base = uintptr_t(mappedAddress) + hnd->offset;
         //ALOGD("gralloc_map() succeeded fd=%d, off=%d, size=%d, vaddr=%p",
         //        hnd->fd, hnd->offset, hnd->size, mappedAddress);
     }
@@ -64,7 +64,7 @@
     return 0;
 }
 
-static int gralloc_unmap(gralloc_module_t const* module,
+static int gralloc_unmap(gralloc_module_t const* /*module*/,
         buffer_handle_t handle)
 {
     private_handle_t* hnd = (private_handle_t*)handle;
@@ -163,9 +163,9 @@
     return 0;
 }
 
-int gralloc_lock(gralloc_module_t const* module,
-        buffer_handle_t handle, int usage,
-        int l, int t, int w, int h,
+int gralloc_lock(gralloc_module_t const* /*module*/,
+        buffer_handle_t handle, int /*usage*/,
+        int /*l*/, int /*t*/, int /*w*/, int /*h*/,
         void** vaddr)
 {
     // this is called when a buffer is being locked for software
@@ -184,7 +184,7 @@
     return 0;
 }
 
-int gralloc_unlock(gralloc_module_t const* module,
+int gralloc_unlock(gralloc_module_t const* /*module*/,
         buffer_handle_t handle)
 {
     // we're done with a software buffer. nothing to do in this
diff --git a/modules/usbaudio/Android.mk b/modules/usbaudio/Android.mk
index 199eb09..2acd171 100644
--- a/modules/usbaudio/Android.mk
+++ b/modules/usbaudio/Android.mk
@@ -24,6 +24,7 @@
 	external/tinyalsa/include
 LOCAL_SHARED_LIBRARIES := liblog libcutils libtinyalsa
 LOCAL_MODULE_TAGS := optional
+LOCAL_32_BIT_ONLY := true
 
 include $(BUILD_SHARED_LIBRARY)
 
diff --git a/tests/camera2/CameraMultiStreamTests.cpp b/tests/camera2/CameraMultiStreamTests.cpp
index de1cfd6..a78950c 100644
--- a/tests/camera2/CameraMultiStreamTests.cpp
+++ b/tests/camera2/CameraMultiStreamTests.cpp
@@ -35,7 +35,10 @@
 #define CAMERA_MULTI_STREAM_DEBUGGING  0
 #define CAMERA_FRAME_TIMEOUT    1000000000LL // nsecs (1 secs)
 #define PREVIEW_RENDERING_TIME_INTERVAL 200000 // in unit of us, 200ms
-#define TOLERANCE_MARGIN 0.01 // 1% tolerance margin for exposure sanity check.
+// 1% tolerance margin for exposure sanity check against metadata
+#define TOLERANCE_MARGIN_METADATA 0.01
+// 5% tolerance margin for exposure sanity check against capture times
+#define TOLERANCE_MARGIN_CAPTURE 0.05
 /* constants for display */
 #define DISPLAY_BUFFER_HEIGHT 1024
 #define DISPLAY_BUFFER_WIDTH 1024
@@ -399,10 +402,10 @@
             // TODO: Need revisit it to figure out an accurate margin.
             int64_t resultExposure = GetExposureValue(frameMetadata);
             int32_t resultSensitivity = GetSensitivity(frameMetadata);
-            EXPECT_LE(sensitivities[i] * (1.0 - TOLERANCE_MARGIN), resultSensitivity);
-            EXPECT_GE(sensitivities[i] * (1.0 + TOLERANCE_MARGIN), resultSensitivity);
-            EXPECT_LE(exposures[i] * (1.0 - TOLERANCE_MARGIN), resultExposure);
-            EXPECT_GE(exposures[i] * (1.0 + TOLERANCE_MARGIN), resultExposure);
+            EXPECT_LE(sensitivities[i] * (1.0 - TOLERANCE_MARGIN_METADATA), resultSensitivity);
+            EXPECT_GE(sensitivities[i] * (1.0 + TOLERANCE_MARGIN_METADATA), resultSensitivity);
+            EXPECT_LE(exposures[i] * (1.0 - TOLERANCE_MARGIN_METADATA), resultExposure);
+            EXPECT_GE(exposures[i] * (1.0 + TOLERANCE_MARGIN_METADATA), resultExposure);
 
             ASSERT_EQ(OK, listener->waitForFrame(waitLimit));
             captureBurstTimes.push_back(systemTime());
@@ -422,7 +425,7 @@
             if (i > 0) {
                 nsecs_t timeDelta =
                         captureBurstTimes[i] - captureBurstTimes[i-1];
-                EXPECT_GE(timeDelta, exposures[i]);
+                EXPECT_GE(timeDelta * ( 1 + TOLERANCE_MARGIN_CAPTURE), exposures[i]);
             }
         }
     }