Hi all, For exercise purposes I have coded a device driver that shares an IRQ line with other devices.
In the code from the book I am reading (Cooperstein's), the interrupt handler returns IRQ_NONE. Close to that code there's the comment "We're just observing". What I don't understand is why the author chose to return IRQ_NONE instead of IRQ_HANDLED. Must I return IRQ_NONE because my driver isn't effectively handling the device? May be in order to not prevent the real driver to handle the interrupts on the shared line? Sorry for my poor English... Thanks in advance. fabio -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies" to [email protected] Please read the FAQ at http://kernelnewbies.org/FAQ
