Hi, On Wed, Jul 13, 2011 at 11:20 PM, Alan Stern <stern@xxxxxxxxxxxxxxxxxxx> wrote: > Why should system suspend be different from runtime suspend? Have you This is also my puzzle, :-) > compared usbmon traces for the two types of suspend? Almost same. If I add USB_QUIRK_RESET_RESUME quirk for the device, the stream data will not be received from the device in runtime pm case, same with that in system suspend. Maybe buggy BIOS makes root hub send reset signal to the device during system suspend time, not sure... thanks, -- Ming Lei -- 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
