mtctl(eirr_bit, 23);	/* clear EIRR bit before unmasking */ 
static void cpu_enable_irq(unsigned int irq){	unsigned long eirr_bit = EIEM_MASK(irq);	mtctl(eirr_bit, 23);	/* clear EIRR bit before unmasking */	cpu_eiem |= eirr_bit;        on_each_cpu(cpu_set_eiem, (void *) cpu_eiem, 1, 1);}
4520	/local/tlutelli/issta_data/temp/c/2005_temp/2005/4520/d911aed8adf74e1fae88d082b8474b2175b7f1da/irq.c/clean/arch/parisc/kernel/irq.c