diff --git a/drivers/media/video/cx23885/cx23885-video.c b/drivers/media/video/cx23885/cx23885-video.c
index 68068c6..66bbd2e 100644
--- a/drivers/media/video/cx23885/cx23885-video.c
+++ b/drivers/media/video/cx23885/cx23885-video.c
@@ -796,6 +796,7 @@
 {
 	struct cx23885_fh *fh = file->private_data;
 	struct cx23885_buffer *buf;
+	unsigned int rc = POLLERR;
 
 	if (V4L2_BUF_TYPE_VBI_CAPTURE == fh->type) {
 		if (!res_get(fh->dev, fh, RESOURCE_VBI))
@@ -803,23 +804,28 @@
 		return videobuf_poll_stream(file, &fh->vbiq, wait);
 	}
 
+	mutex_lock(&fh->vidq.vb_lock);
 	if (res_check(fh, RESOURCE_VIDEO)) {
 		/* streaming capture */
 		if (list_empty(&fh->vidq.stream))
-			return POLLERR;
+			goto done;
 		buf = list_entry(fh->vidq.stream.next,
 			struct cx23885_buffer, vb.stream);
 	} else {
 		/* read() capture */
 		buf = (struct cx23885_buffer *)fh->vidq.read_buf;
 		if (NULL == buf)
-			return POLLERR;
+			goto done;
 	}
 	poll_wait(file, &buf->vb.done, wait);
 	if (buf->vb.state == VIDEOBUF_DONE ||
 	    buf->vb.state == VIDEOBUF_ERROR)
-		return POLLIN|POLLRDNORM;
-	return 0;
+		rc =  POLLIN|POLLRDNORM;
+	else
+		rc = 0;
+done:
+	mutex_unlock(&fh->vidq.vb_lock);
+	return rc;
 }
 
 static int video_release(struct file *file)