diff --git a/media/libaudioclient/AudioTrackShared.cpp b/media/libaudioclient/AudioTrackShared.cpp
index da27dc8..e3b79b2 100644
--- a/media/libaudioclient/AudioTrackShared.cpp
+++ b/media/libaudioclient/AudioTrackShared.cpp
@@ -490,6 +490,8 @@
 status_t AudioTrackClientProxy::waitStreamEndDone(const struct timespec *requested)
 {
     struct timespec total;          // total elapsed time spent waiting
+    struct timespec before;
+    bool beforeIsValid = false;
     total.tv_sec = 0;
     total.tv_nsec = 0;
     audio_track_cblk_t* cblk = mCblk;
@@ -570,17 +572,38 @@
         }
         int32_t old = android_atomic_and(~CBLK_FUTEX_WAKE, &cblk->mFutex);
         if (!(old & CBLK_FUTEX_WAKE)) {
+            if (!beforeIsValid) {
+                clock_gettime(CLOCK_MONOTONIC, &before);
+                beforeIsValid = true;
+            }
             errno = 0;
             (void) syscall(__NR_futex, &cblk->mFutex,
                     mClientInServer ? FUTEX_WAIT_PRIVATE : FUTEX_WAIT, old & ~CBLK_FUTEX_WAKE, ts);
-            switch (errno) {
+            status_t error = errno; // clock_gettime can affect errno
+            {
+                struct timespec after;
+                clock_gettime(CLOCK_MONOTONIC, &after);
+                total.tv_sec += after.tv_sec - before.tv_sec;
+                // Use auto instead of long to avoid the google-runtime-int warning.
+                auto deltaNs = after.tv_nsec - before.tv_nsec;
+                if (deltaNs < 0) {
+                    deltaNs += 1000000000;
+                    total.tv_sec--;
+                }
+                if ((total.tv_nsec += deltaNs) >= 1000000000) {
+                    total.tv_nsec -= 1000000000;
+                    total.tv_sec++;
+                }
+                before = after;
+            }
+            switch (error) {
             case 0:            // normal wakeup by server, or by binderDied()
             case EWOULDBLOCK:  // benign race condition with server
             case EINTR:        // wait was interrupted by signal or other spurious wakeup
             case ETIMEDOUT:    // time-out expired
                 break;
             default:
-                status = errno;
+                status = error;
                 ALOGE("%s unexpected error %s", __func__, strerror(status));
                 goto end;
             }