Hi All,

I am trying to override Interrupt Vector Table, using function.
request_irq(...).

When i send data from other PC to this linux PC, i find that
IRQ 4 interrupt is not invoked.

I checked for following:

1) request_irq(...) returns success which indicated that IVT is modified.

2) Interrupt Enable bit 0 is set to 1,to enable interrupt for incoming data on serial port.

3) Looking at file /proc/Interrupt, i see that mydriver interrupt is
registered.


Please help, i need to find out why my interrupt is not being invoked,or if it is ,then why interrupt handler is not being called.

-Sanjay