a probe function that is __devinit and that calls a lot of other functions that are marked __init, which kbuild complains about. Marking everything __devinit means that the code does not discarded when CONFIG_HOTPLUG is set, which is a little more wasteful, but also more consistent Without this patch, building exynos_defconfig results in: WARNING: drivers/pinctrl/built-in.o(.devinit.text+0x124): Section mismatch in reference from the function samsung_pinctrl_probe() to the function .init.text:samsung_gpiolib_register() The function __devinit samsung_pinctrl_probe() references a function __init samsung_gpiolib_register(). If samsung_gpiolib_register is only used by samsung_pinctrl_probe then annotate samsung_gpiolib_register with a matching annotation. Signed-off-by: Arnd Bergmann Cc: Thomas Abraham Cc: Linus Walleij Cc: Stephen Warren Cc: Kukjin Kim Signed-off-by: Linus Walleij DÒÙ