Module symbol problems with `make allmodconfig': *** Warning: "cs5535_gpio_base" [drivers/i2c/busses/i2c-cs5535.ko] undefined! *** Warning: "cs5535_gpio_mask" [drivers/char/cs5535_gpio.ko] undefined! *** Warning: "cs5535_gpio_base" [drivers/char/cs5535_gpio.ko] undefined! Perhaps CONFIG_CS5535=m wasn't supposed to be possible?