if (set_1284_register(pp, 2, d))
if (set_1284_register(pp, 2, d, GFP_KERNEL))
static void parport_uss720_enable_irq(struct parport *pp){	struct parport_uss720_private *priv = pp->private_data;		unsigned char d;	d = priv->reg[1] | 0x10;	if (set_1284_register(pp, 2, d))		return;	priv->reg[1] = d;}