extern int request_RTirq
(unsigned int irq, void (*handler)(void));
SYNOPSIS
#include "rtl_fifo.h"
DESCRIPTION
Installs handler as an interrupt service routine for
IRQ level irq.
handler is then invoked whenever interrupt number
irq occurs. The interrupt service routine can be uninstalled using
free_RTirq.
RETURN VALUE
On success, 0 is returned. On failure, a negative value is
returned .
ERRORS
irq is not a valid IRQ number.
handler is NULL
irq already has a handler. You must first call
free_RTirq. to make the IRQ available
extern int free_RTirq
(unsigned int irq);
SYNOPSIS
#include "rtl_fifo.h"
DESCRIPTION
Uninstalls an interrupt service routine previously installed
with a call to request_RTirq.
RETURN VALUE
None
ERRORS
None