hidpp_root_get_protocol_version 3403 drivers/hid/hid-logitech-hidpp.c 		ret = hidpp_root_get_protocol_version(hidpp);
hidpp_root_get_protocol_version 3630 drivers/hid/hid-logitech-hidpp.c 	connected = hidpp_root_get_protocol_version(hidpp) == 0;