Kim Kyuwon <chammoru@xxxxxxxxx> writes: > 2009/5/7 Arve Hjønnevåg <arve@xxxxxxxxxxx>: >> 2009/5/6 Kim Kyuwon <chammoru@xxxxxxxxx>: >>> 2009/5/7 Arve Hjønnevåg <arve@xxxxxxxxxxx>: >>>> On Wed, May 6, 2009 at 5:16 PM, Kevin Hilman >>>> <khilman@xxxxxxxxxxxxxxxxxxx> wrote: >>>>> "Rafael J. Wysocki" <rjw@xxxxxxx> writes: >>>>> >>>>>> On Wednesday 06 May 2009, Kevin Hilman wrote: >>>>>>> Kevin Hilman <khilman@xxxxxxxxxxxxxxxxxxx> writes: >>>> >>>>> There is at least one problem with that which is why Kyuwon Kim added >>>>> the ->disable hook to OMAP's irq_chip. The problem is with drivers >>>>> that call disable_irq() in their suspend hook, usually done to prevent >>>>> the device from waking the system since on OMAP, any IRQ can be >>>>> configured to wake the system. >>>>> >>>> >>>> This does not sound correct. disable_irq_wake should be used for this. >>>> A driver may need to mask its interrupt before suspending but this >>>> should not also disable it as a wakeup source. >>> >>> I wish I could use disable_irq_wake(), but it doesn't work in OMAP. >> >> This does not sound like a hardware problem. > > We may need advices of TI engineers. > However, as far as I know, It is impossible to disable 'interrupt > wake-up' with interrupt enabled. Because an interrupt itself generate > a system wake-up event in OMAP3430 (Hardware level). Interrupt wakeups can be disabled at the PRCM level. Or more simply we can keep a mask of wakeup-enable interrupts and use that. I will experiment with getting disable_irq_wake() working. Kevin _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/linux-pm
