Hi, this is v4 of an attempt to make easier for devices to remain in runtime PM when the system ges to sleep, mainly to reduce the time spent resuming devices.
In this version there's a patch from Alan that relaxes the conditions that allow a device to go directly to the complete phase, thus allowing its ancestors to do the same. Also, we interpret the absence of all PM callback implementations as being safe to do direct_complete as well. With these changes, a uvcvideo device (for example) stays in runtime suspend when the system goes to sleep and is left in that state when the system resumes, not delaying it unnecessarily. Thanks, Tomeu Alan Stern (1): PM / sleep: Allow devices without runtime PM to do direct-complete Tomeu Vizoso (2): PM / sleep: Go direct_complete if driver has no callbacks USB / PM: Allow USB devices to remain runtime-suspended when sleeping Documentation/power/devices.txt | 7 +++++++ Documentation/power/runtime_pm.txt | 4 ---- drivers/base/power/main.c | 19 ++++++++++++++++++- drivers/usb/core/port.c | 6 ++++++ drivers/usb/core/usb.c | 11 ++++++++++- include/linux/pm_runtime.h | 6 ------ 6 files changed, 41 insertions(+), 12 deletions(-) -- 2.4.3 -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
