The /etc/config/usbgadget file is a conffile, so specify it as such. Link: http://patchwork.ozlabs.org/project/openwrt/patch/20250403-dns313-usb-serial-v2-2-d84de8e86931@linaro.org/ Reviewed-by: Chuanhong Guo <gch981213@gmail.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>