The generic problem this series is trying to solve, is that for some bus types and PM domains, it's not sufficient to only check the return value from device_may_wakeup(), to fully understand how to treat the device during system suspend. One particular case that suffers from this, is the generic PM domain (aka genpd) and that is taken care of in the final change in this series. The special case this series address, is to enable drivers to instruct bus types and PM domains, that the device need to stay powered in case wakeup signals is enabled for it. Geert Uytterhoeven, has been working on some related problems for some Renesas SoCs [1], to be able to properly configure WakeOnLAN, for some ethernet devices/drivers, which are used together with genpd. My intent is that this series enables a solution for those problems. [1] https://www.spinics.net/lists/linux-renesas-soc/msg19319.html Ulf Hansson (3): PM / core: Re-factor some code dealing with parents in __device_suspend() PM / core: Add WAKEUP_POWERED driver flag PM / Domains: Take WAKEUP_POWERED driver flag into account Documentation/driver-api/pm/devices.rst | 12 ++++++++++++ drivers/base/power/domain.c | 14 ++++++++++---- drivers/base/power/main.c | 33 +++++++++++++++++++++------------ include/linux/pm.h | 5 +++++ 4 files changed, 48 insertions(+), 16 deletions(-) -- 2.7.4
