desc->handle(isa_irq, desc, regs); 
desc_handle_irq(isa_irq, desc, regs); 
isa_irq_handler(unsigned int irq, struct irqdesc *desc, struct pt_regs *regs){	unsigned int isa_irq = *(unsigned char *)PCIIACK_BASE;	if (isa_irq < _ISA_IRQ(0) || isa_irq >= _ISA_IRQ(16)) {		do_bad_IRQ(isa_irq, desc, regs);		return;	}	desc = irq_desc + isa_irq;	desc->handle(isa_irq, desc, regs);}
4520	/local/tlutelli/issta_data/temp/c/2005_temp/2005/4520/664399e1fbdceb18da9c9c5534dedd62327c63e8/isa-irq.c/clean/arch/arm/mach-footbridge/isa-irq.c