An active boolean is introduced on producer side: it reflects whether the source is active (at interrupt controller level or at VFIO level - automasked -).
This is a temporary hack for ARM IRQ forwarding with vfio platform. I think the connect and disconnect should become callbacks too. This would make possible to handle error in the process. Typically active could be returned by producer->stop and analyzed before going further. in that case the list_add only if connect returns 0. Signed-off-by: Eric Auger <[email protected]> --- include/linux/irqbypass.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/include/linux/irqbypass.h b/include/linux/irqbypass.h index 8f62235..c89c3a8 100644 --- a/include/linux/irqbypass.h +++ b/include/linux/irqbypass.h @@ -9,6 +9,8 @@ struct irq_bypass_producer { struct list_head node; void *token; int irq; /* linux irq */ + /* is irq active at irqchip or VFIO masked? */ + bool active; void (*stop)(struct irq_bypass_producer *); void (*resume)(struct irq_bypass_producer *); void (*add_consumer)(struct irq_bypass_producer *, -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
