gem_nd_arg
struct gem_dev *dp = ((struct gem_nd_arg *)(void *)arg)->dp;
int item = ((struct gem_nd_arg *)(void *)arg)->item;
struct gem_dev *dp = ((struct gem_nd_arg *)(void *)arg)->dp;
int item = ((struct gem_nd_arg *)(void *)arg)->item;
struct gem_nd_arg *arg;
arg = &((struct gem_nd_arg *)(void *)dp->nd_arg_p)[item];
kmem_zalloc(sizeof (struct gem_nd_arg) * PARAM_COUNT, KM_SLEEP);
kmem_free(dp->nd_arg_p, sizeof (struct gem_nd_arg) * PARAM_COUNT);