Hi, 
i have a question about interrupts on UP and SMP.

I tried experimenting with rtl_hard_enable_irq()
under UP and SMP kernels and found that in the latter
case it is not nessecary to re-enable irq in the 
interrupt handler in order to recieve further interrupts.

I did that with `sound` example.
Under UP kernel:
        if i HAVE rtl_hard_enable_irq(8) in the end of interrupt
        handler, it works.

        if i do NOT have, it does not work. Ok.

Under SMP kernel:
        if i HAVE rtl_hard_enable_irq(8) in the end of interrupt
        handler, it works.

        if i do NOT, it also works.

How this can be explained?
Is it the way it should be?

Eugene.

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