Jo !
I have a problem with an interrupt handler in RT Linux rtlinux30pre6c
running on a 2.2.17pre13 machine.
I have a CAN card which is configured to create interrupts on line 7. I
install a handler with a function like this:
----
int CAN_Interrupt=7;
int CanEnableInterrupt(unsigned int (*handler)(unsigned int irq, struct pt_regs *regs))
{
int ret;
ret = rtl_request_irq(CAN_Interrupt,handler);
if (ret != 0) {
rtl_printf("CAN-ISA-Phytec: Couldn't get interrupt for CAN Card.\n");
}
rtl_hard_enable_irq(CAN_Interrupt);
return ret;
}
---
The handler looks like this:
---
unsigned int CanInterrupt(unsigned int irq, struct pt_regs *regs)
{
// ...
// code for copying the information
// later used by a rt-thread
// ...
rtl_hard_enable_irq(CAN_Interrupt);
}
---
Somehow the handler is never called, even when the card produces interrupts.
Did I miss something ?
This scheme worked quite well under v1.x and we intend to port aur system
properly to rt v3.0 but we are in need for a running system while proting
and we need linux 2.2.
blue skies
Jan Albiez
--
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