if (set_1284_register(pp, 2, d))
if (set_1284_register(pp, 2, d, GFP_KERNEL))
static void parport_uss720_write_control(struct parport *pp, unsigned char d){	struct parport_uss720_private *priv = pp->private_data;		d = (d & 0xf) | (priv->reg[1] & 0xf0);	if (set_1284_register(pp, 2, d))		return;	priv->reg[1] = d;}