unsigned long uoff;  
static drm_map_t *ffb_find_map(struct file *filp, unsigned long off){	drm_file_t	*priv	= filp->private_data;	drm_device_t	*dev;	drm_map_list_t  *r_list;	struct list_head *list;	drm_map_t	*map;	if (!priv || (dev = priv->dev) == NULL)		return NULL;	list_for_each(list, &dev->maplist->head) {		unsigned long uoff;		r_list = (drm_map_list_t *)list;		map = r_list->map;		if (!map)			continue;		uoff = (map->offset & 0xffffffff);		if (uoff == off)			return map;	}	return NULL;}
4520	/local/tlutelli/issta_data/temp/c/2005_temp/2005/4520/d1f2b55ad2c11f46e30547a9f7754e99b478348e/ffb_drv.c/clean/drivers/char/drm/ffb_drv.c