We must not use any information in the passed var besides xoffset,
yoffset and vmode as otherwise applications might abuse it.
Signed-off-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: NNicolas Ferre <nicolas.ferre@atmel.com>
Reviewed-by: NWolfram Sang <w.sang@pengutronix.de>