WINCH_IRQ 601 arch/um/drivers/line.c um_free_irq(WINCH_IRQ, winch); WINCH_IRQ 683 arch/um/drivers/line.c if (um_request_irq(WINCH_IRQ, fd, IRQ_READ, winch_interrupt, WINCH_IRQ 322 arch/um/kernel/trap.c do_IRQ(WINCH_IRQ, regs);