Interrupt handler not executed

R.Patil at R.Patil at
Fri Jan 11 18:36:29 EST 2013


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.     

Interesting part is, we have similar requirement in other drivers but for different interrupt lines. The interrupt handler for them executes successfully. What could be the possible reasons for this behaviour (not invoking IRQ0 interrupt handler)? If anybody could give a hint to solve or debug the problem?

Kind Regards,
Rahul PatilEmail Disclaimer:

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