If CONFIG_DEBUG_FS is n, build fails: drivers/platform/x86/intel_pmc_core.c: In function pmc_core_resume: drivers/platform/x86/intel_pmc_core.c:1327:3: error: implicit declaration of function pmc_core_slps0_display; did you mean pmc_core_is_pc10_failed? [-Werror=implicit-function-declaration] pmc_core_slps0_display(pmcdev, dev, NULL); ^~~~~~~~~~~~~~~~~~~~~~ Function pmc_core_slps0_display() is responsible for displaying debug registers, which is under CONFIG_DEBUG_FS. Providing the static inline stub whenever CONFIG_DEBUG_FS is disabled to fix this. Function pmc_core_lpm_display() is the same. Reported-by: Hulk Robot <hulkci@xxxxxxxxxx> Signed-off-by: Chen Zhou <chenzhou10@xxxxxxxxxx> --- drivers/platform/x86/intel_pmc_core.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/drivers/platform/x86/intel_pmc_core.c b/drivers/platform/x86/intel_pmc_core.c index f4a36fb..939f8e0 100644 --- a/drivers/platform/x86/intel_pmc_core.c +++ b/drivers/platform/x86/intel_pmc_core.c @@ -1117,6 +1117,20 @@ static void pmc_core_dbgfs_register(struct pmc_dev *pmcdev) } } #else +static inline void pmc_core_slps0_display(struct pmc_dev *pmcdev, + struct device *dev, + struct seq_file *s) +{ +} + +static inline void pmc_core_lpm_display(struct pmc_dev *pmcdev, + struct device *dev, + struct seq_file *s, u32 offset, + const char *str, + const struct pmc_bit_map **maps) +{ +} + static inline void pmc_core_dbgfs_register(struct pmc_dev *pmcdev) { } -- 2.7.4