Interrupt handler not executed

[R.Patil@mei-india.com]

Hello,

We are working on board based on Freescale MPC8313ERDB. We have ported linu=
x 3.0.46 kernel on it. In one of device driver written by us, we need to ta=
ke some action upon asserting IRQ0 interrupt. For this we have written inte=
rrupt handler which takes care of this. We are able register interrupt hand=
ler successfully with the help of 'request=5Firq'. We confirmed this by che=
cking respective entry in '/proc/interrupts'. We have also confirmed assert=
ion of interrupt line (IRQ0) on oscilloscope. The problem is, interrupt han=
dler does not execute upon asserting the interrupt line.    =20

Interesting part is, we have similar requirement in other drivers but for d=
ifferent interrupt lines. The interrupt handler for them executes successfu=
lly. What could be the possible reasons for this behaviour (not invoking IR=
Q0 interrupt handler)? If anybody could give a hint to solve or debug the p=
roblem?

Kind Regards,
Rahul PatilEmail Disclaimer:
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