sorry, i am also quite confused....
the caller of your function handle_IRQ_event() is __do_IRQ(), which is thus:
if (likely(!(desc->status & IRQ_DISABLED))) {
action_ret = handle_IRQ_event(irq, desc->action);
if (!noirqdebug)
note_interrupt(irq, desc, action_ret);
}
so what it means that only when IRQ_DISABLED is NOT SET, then
handle_IRQ_event() will be called, simulating a software-based IRQ.
and so the above function WILL ALWAYS BE CALLED WITH IRQ_DISABLED NOT
SET (assuming there is no other caller of handle_IRQ_event()).
errhhhh?? Am i right?
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