Interrupt handler not executed

Scott Wood scottwood at
Sat Jan 12 05:16:11 EST 2013

On 01/11/2013 01:36:29 AM, R.Patil at wrote:
> Hello,
> We are working on board based on Freescale MPC8313ERDB. We have  
> ported linux 3.0.46 kernel on it. In one of device driver written by  
> us, we need to take some action upon asserting IRQ0 interrupt. For  
> this we have written interrupt handler which takes care of this. We  
> are able register interrupt handler successfully with the help of  
> 'request_irq'. We confirmed this by checking respective entry in  
> '/proc/interrupts'. We have also confirmed assertion of interrupt  
> line (IRQ0) on oscilloscope. The problem is, interrupt handler does  
> not execute upon asserting the interrupt line.

What IRQ number did you pass to request_irq()?  request_irq() takes  
virtual interrupt numbers, not anything out of the chip manual.

If that's not the issue, is the interrupt configured properly for level  
and sense?


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