hi all: >> >>> >> When we use "echo mem > /sys/power/state" , we didn't see any function >>> > >>> > "mem" is a kind of sleep, not a kind of hibernation. >>> But I don't see any usb sleep funciton called from log >> >> What messages do you expect to see? > When I try the command yesterday, I didn't plug in usb dick. :) > I attach the log after I plug in usb stick. from the log, I conclude calling path as below: 1. calling dev_pm_ops 2. calling interface driver's suspend 3. calling usb device's suspend. My questions are: 1. in dev_pm_ops, we use same function, usb_suspend, but different pm_message to tell different kind of power management. 2. but in usb device's suspend, generic_suspend, different pm_message seems has the same effect. 3. is there any platform apis in generic_suspend for us to register when we try to handle hw's specific behavior during hibernate/restore? Thanks for your help, -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
