Hi, I have a libusb (USB-2.0_ tree with the following layout:
HOST (USB 2.0) -> 5 port hub (master) -> 5 x 10 port hub -> 50 x USB devices It is a 50 unit mobile device charger and also enables USB data comms to the individual devices. Each node is independently powered. The devices are all the same model/make. I know this is a relative corner case for USB 2.0 standard but that is another story. Is it possible to reset the ports on the 5 port hub (master) individually with libusb or some other system level command? Here's the scenario: When I insert usb devices with the entire chain connected I see varying results for the number of devices detected by the HOST. Sometimes 15 are detected, sometimes 34, 22, 5, etc... However If I disconnect the cables for the 10 port hubs to the 5 port master hub before I insert all the devices and then connect each 10 port hub one at a time with a delay to ensure all the devices on that hub are detected all 50 devices are detected on the host. So I would like to know if there is a method to disable/enable the ports on the 5 port master without resetting the entire bus or causing the sub nodes/hubs to "bounce" their connections. -- Patrick Shirkey Boost Hardware Ltd -- 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
