Build issue has been identified when COMPILE_TEST=y and MFD_STM32_TIMERS=n: https://lkml.org/lkml/2018/5/17/825 - First patch introduces a stub routine in mfd header file - Sub-sequent patch solves warning in pwm-stm32 with these configs Fabrice Gasnier (2): mfd: stm32-timers: fix pwm-stm32 linker issue with COMPILE_TEST pwm: stm32: initialize raw local variables drivers/pwm/pwm-stm32.c | 2 +- include/linux/mfd/stm32-timers.h | 12 ++++++++++++ 2 files changed, 13 insertions(+), 1 deletion(-) -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-next" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html