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