thanks for quicly answer, I've tried , but i think same error : /abc/tbs/media_build/v4l/tw686x-core.c:89:29: error: initialization from incompatible pointer type [-Werror=incompatible-pointer-types] module_param_call(dma_mode, tw686x_dma_mode_set, tw686x_dma_mode_get, ^ ./include/linux/moduleparam....