USB device configuration descriptor expresses bus power electrical current requirement in field bMaxPower. bMaxPower measure granularity was 2 mA. Since USB version 3.0, bMaxPower granularity is not always 2 mA. usbutils 008 lsusb misreports MaxPower for SuperSpeed devices. For example, lsusb -v outputs 'MaxPower 500mA' when a device is connected on High Speed bus, but 'MaxPower 224mA' when connected on SuperSpeed bus. usbfs devices holds correct 'MxPwr=896mA'. I think, responsible code is lsusb.c line 418. -- 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
