pls clarify.

[Pannaga Bhushan <bhushan@multitech.co.in>]

Hi all,
         In the funtion - snd_pcm_hw_ptr_interrupt ,  there are the
following lines --

delta = hw_ptr_interrupt - new_hw_ptr;
if(delta > 0) {
    if( delta < runtime->buffer_size / 2) {
        snd_printd("Unexpected hw_pointer value .... wrong interrupt
acknowledge?\n"...);
        return 0;
    }
    runtime->hw_ptr_base += runtime->buffer_size;
    -------
    ------
    -------
}


Can you pls clarify what these lines are doing? what is the significance
of delta and the significance of delta > 0 but less than
runtime->buffer_size/2   being a case of wrong interrupt ack.

thanx in advance,
Pannaga Bhushan



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