Hello Qianggui, On Mon, Dec 27, 2021 at 5:16 PM kernel test robot <lkp@xxxxxxxxx> wrote: [...] > >> drivers/pinctrl/meson/pinctrl-meson-s4.c:9:10: fatal error: 'dt-bindings/gpio/meson-s4-gpio.h' file not found In v1 of this series you also included a patch "dt-bindings: gpio: Add a header file for Amlogic Meson S4". Rob gave his Acked-by tag which means that you need to keep the patch in the series but add his Acked-by above your Signed-off-by line. Patches should only be dropped from a series if they are not relevant anymore or if they were already applied to a tree by the maintainer. In this case Rob just gave his Acked-by but the patch was not applied by any maintainer yet. Please send a v3 which adds the header file patch back and includes Rob's Acked-by in there. Thank you Martin