Android : Can't access USB camera (UVC Compatible) on IFC6410 using Android's Camera API

I and my friends are trying to get our app working on the IFC6410 board, it's a Snapdragon 600 based Android Development Board.

It has an up-to-date BSP of KitKat. Everything works fine except the USB camera. Our app uses the standard Android Camera API functions to access the camera for the purpose of some video processing (using OpenCV)

This same app and same camera works on other android devices that we tested with but not with this board.

When I try on this board the app throws error "Camera Failed" and log says 'failed to connect to camera service'. We are doing it properly i.e. releasing the Camera Objects and all that stuff is taken care of since it works on other devices.

I need someones help to understand this issue and hence to sort it out.

Using UVC driver directly is always an option but we would like to stick to Android API only.