To achieve the goal of preventing unwanted conversion between a DRM and a V4L2 FourCC, make the V4L2PixelFormat constructor that takes an integer value explicit. All users of V4L2 pixel formats flagged by the compiler are fixed. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>