• Rafael J. Wysocki's avatar
    PCI: irq: Introduce rearm_wake_irq() · 3a79bc63
    Rafael J. Wysocki authored
    Introduce a new function, rearm_wake_irq(), allowing a wakeup IRQ
    to be armed for systen wakeup detection again without running any
    action handlers associated with it after it has been armed for
    wakeup detection and triggered.
    
    That is useful for IRQs, like ACPI SCI, that may deliver wakeup
    as well as non-wakeup interrupts when armed for systen wakeup
    detection.  In those cases, it may be possible to determine whether
    or not the delivered interrupt is a systen wakeup one without
    running the entire action handler (or handlers, if the IRQ is
    shared) for the IRQ, and if the interrupt turns out to be a
    non-wakeup one, the IRQ can be rearmed with the help of the
    new function.
    Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
    Acked-by: default avatarThomas Gleixner <tglx@linutronix.de>
    3a79bc63
interrupt.h 22.3 KB