Provided by: kernel-doc-2.4.27_2.4.27-12_all bug


       probe_irq_off -  end an interrupt autodetect


       int probe_irq_off (unsigned long val);


       val          mask of potential interrupts (unused)


       Scans  the unused interrupt lines and returns the line which appears to
       have triggered the interrupt. If no interrupt was found  then  zero  is
       returned.  If  more  than  one  interrupt is found then minus the first
       candidate is returned to indicate their is doubt.

       The interrupt probe logic state is returned to its previous value.


        When used  in  a  module  (which  arguably  shouldnt  happen)  nothing
       prevents  two  IRQ  probe callers from overlapping. The results of this
       are non-optimal.