mkdir: can't create directory ffs.adb: Device or resource bus Admin included in Kernel2023-12-24 About 100 words One minute Question# mkdir /sys/kernel/config/usb_gadget/haier/functions/ffs.adb mkdir: can't create directory '/sys/kernel/config/usb_gadget/haier/functions/ffs.adb': Device or resource busyAnswer-CONFIG_USB_FUNCTIONFS=y +CONFIG_USB_CONFIGFS_F_FS=y