I based on imx-yocto-L4.14.78_1.0.0_ga download the following content，the kernel version is linux4.9.67
$ mkdir imx-yocto-bsp
$ cd imx-yocto-bsp
$ repo init -u https://source.codeaurora.org/external/imx/imx-manifest -b imx-linux-sumo -m
$ repo sync
i add package usbutils. it's print error the following content when runing lsusb.
unable to initialize libusb : -99
my machine is imx6qdlsabresd, but I use linux4.1.44 is right. I use the same rootfs.
I don't know what fix this bug, who can help me.