86     status_t err = acquireBufferLocked(&item);  in nextBuffer()  local
87     if (err == BufferQueue::NO_BUFFER_AVAILABLE) {  in nextBuffer()
90     } else if (err != NO_ERROR) {  in nextBuffer()
91         ALOGE("error acquiring buffer: %s (%d)", strerror(-err), err);  in nextBuffer()
92         return err;  in nextBuffer()
106         err = releaseBufferLocked(mCurrentBufferSlot, EGL_NO_DISPLAY,  in nextBuffer()
108         if (err != NO_ERROR && err != BufferQueue::STALE_BUFFER_SLOT) {  in nextBuffer()
109             ALOGE("error releasing buffer: %s (%d)", strerror(-err), err);  in nextBuffer()
110             return err;  in nextBuffer()
124     status_t err = nextBuffer(buf, acquireFence);  in onFrameAvailable()  local
125     if (err != NO_ERROR) {  in onFrameAvailable()
127                 strerror(-err), err);  in onFrameAvailable()
130     err = mHwc.fbPost(mDisplayType, acquireFence, buf);  in onFrameAvailable()
131     if (err != NO_ERROR) {  in onFrameAvailable()
132         ALOGE("error posting framebuffer: %d", err);  in onFrameAvailable()
147         status_t err = addReleaseFence(mCurrentBufferSlot, fence);  in onFrameCommitted()  local
148         ALOGE_IF(err, "setReleaseFenceFd: failed to add the fence: %s (%d)",  in onFrameCommitted()
149                 strerror(-err), err);  in onFrameCommitted()