On Saturday 18 April 2009, Linus Torvalds wrote: > > On Sat, 18 Apr 2009, Russell King wrote: > > > > What I need to be able to do is to suspend most devices on the host side > > which may involve talking to a separate microcontroller via I2C to shut > > down power to peripherals. > > I suspect that for cases like this, the simplest thing to do is to just > add a marker for "don't mess with my power management, I'm doing > everything through sysdev" for the specified devices. In this particular case, if sysdev was used, there would be no problem, but the platform uses a platform device to suspend-resume the i2c controller. In principle we could convert it to use a sysdev, but that would be more difficult than the last patch I sent IMO (at least to me). Also, apparently it is not the only platform doing it. > Then those i2c controllers (and perhaps some PCI bridges etc) can just set > that bit, and the device would basically turn invisible as far as the PM > layer is concerned. > > Not that different from the IRQF_TIMER bit for timer interrupts. I generally agree and a patch to implemet such a flag has been submitted recently. Thanks, Rafael -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
