From mboxrd@z Thu Jan 1 00:00:00 1970 From: fabrice.gasnier@st.com (Fabrice Gasnier) Date: Fri, 18 May 2018 17:24:03 +0200 Subject: [PATCH 1/2] mfd: stm32-timers: fix pwm-stm32 linker issue with COMPILE_TEST In-Reply-To: <1526657044-14879-1-git-send-email-fabrice.gasnier@st.com> References: <1526657044-14879-1-git-send-email-fabrice.gasnier@st.com> Message-ID: <1526657044-14879-2-git-send-email-fabrice.gasnier@st.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org This is seen when COMPILE_TEST=y and MFD_STM32_TIMERS=n. drivers/pwm/pwm-stm32.o: In function 'stm32_pwm_raw_capture': pwm-stm32.c:... undefined reference to 'stm32_timers_dma_burst_read' Fixes: 0c6609805b63 ("mfd: stm32-timers: Add support for DMAs") Signed-off-by: Fabrice Gasnier --- include/linux/mfd/stm32-timers.h | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/include/linux/mfd/stm32-timers.h b/include/linux/mfd/stm32-timers.h index 9da1d7e..067d146 100644 --- a/include/linux/mfd/stm32-timers.h +++ b/include/linux/mfd/stm32-timers.h @@ -124,8 +124,20 @@ struct stm32_timers { struct stm32_timers_dma dma; /* Only to be used by the parent */ }; +#if IS_REACHABLE(CONFIG_MFD_STM32_TIMERS) int stm32_timers_dma_burst_read(struct device *dev, u32 *buf, enum stm32_timers_dmas id, u32 reg, unsigned int num_reg, unsigned int bursts, unsigned long tmo_ms); +#else +static inline int stm32_timers_dma_burst_read(struct device *dev, u32 *buf, + enum stm32_timers_dmas id, + u32 reg, + unsigned int num_reg, + unsigned int bursts, + unsigned long tmo_ms) +{ + return -ENODEV; +} +#endif #endif -- 1.9.1