Unable to change IRQ affinity

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Hi,

I've been working with 2 drivers, an i2c based touchcreen and a spi
based ethernet. My problem comes when I try to change the affinity for
their irqs to be handled by processor 2, change is not reflected, for
the ethernet I have...

   # cat /proc/interrupts | grep eth0
   194:       4883          0        GPIO  eth0
   # cat /proc/irq/194/smp_affinity
   3
   # echo 1 > /proc/irq/194/smp_affinity
   # cat /proc/irq/194/smp_affinity
   3

Is there any flag needed in the irq handler to allow the affinity? I
have tested the irq affinity for a keypad driver and it is working as
expected...

Thanks for your comments...

Best Regards
Abraham

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