On Sat, 2010-12-18 at 18:00 +0200, Ohad Ben-Cohen wrote: > > That's where the problem is. If there's a difference, from the driver's > > point of view, between suspend and some other operation, there should be a > > way to tell the driver what case it actually is dealing with. > > Yes, the problem will be solved if the driver would bypass the runtime > PM framework on system suspend. mac80211 obviously has this > information, and technically it's very easy to let the driver know > about it. > > But the difference between suspend and normal operation is really > artificial: in both cases mac80211 just asks the driver to power its > device down, and the end result is exactly the same (a GPIO line of > the device is de-asserted in our case). The difference between these > two scenarios > exist only because runtime PM is effectively disabled during system > suspend, and therefore the driver has to look for an alternative way > to power down the device.
Sounds to me like the difference isn't really in the driver, but the core PM subsystem. Why does it care when powering off a device whether it's during suspend, or during runtime? johannes -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
