From: Borislav Petkov <bp@suse.de> mainline inclusion from mainline-v4.20-rc1 commit a324e9396ca3d00e1101476ba067b412e0aba232 category: bugfix bugzilla: https://bugzilla.openeuler.org/show_bug.cgi?id=44 CVE: NA ----------------------------------------------- The driver depends on the ADXL component glue and selects it. However, ADXL itself implicitly depends on ACPI and in nonsensical randconfig builds like this: # CONFIG_ACPI is not set CONFIG_ACPI_ADXL=y where ACPI is not enabled, the build fails with: drivers/edac/skx_edac.o: In function `skx_mce_check_error': skx_edac.c:(.text+0xab): undefined reference to `adxl_decode' drivers/edac/skx_edac.o: In function `skx_init': skx_edac.c:(.init.text+0x8bf): undefined reference to `adxl_get_component_names' make: *** [vmlinux] Error 1 Add stubs for that case so that the build succeeds. CONFIG_ACPI=n doesn't make any sense for real configurations but this fix will at least silence randconfig builds. Signed-off-by: Borislav Petkov <bp@suse.de> Acked-by: Tony Luck <tony.luck@intel.com> Cc: "Rafael J. Wysocki" <rafael@kernel.org> Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com> Reviewed-by: Xiongfeng Wang <wangxiongfeng2@huawei.com> Signed-off-by: Yang Yingliang <yangyingliang@huawei.com> --- drivers/edac/Kconfig | 2 +- include/linux/adxl.h | 5 +++++ 2 files changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/edac/Kconfig b/drivers/edac/Kconfig index 0c4ef27a91733..37adb68e94f8f 100644 --- a/drivers/edac/Kconfig +++ b/drivers/edac/Kconfig @@ -234,7 +234,7 @@ config EDAC_SKX depends on PCI && X86_64 && X86_MCE_INTEL && PCI_MMCONFIG depends on ACPI_NFIT || !ACPI_NFIT # if ACPI_NFIT=m, EDAC_SKX can't be y select DMI - select ACPI_ADXL + select ACPI_ADXL if ACPI help Support for error detection and correction the Intel Skylake server Integrated Memory Controllers. If your diff --git a/include/linux/adxl.h b/include/linux/adxl.h index 2a629acb4c3f4..2d29f55923e3a 100644 --- a/include/linux/adxl.h +++ b/include/linux/adxl.h @@ -7,7 +7,12 @@ #ifndef _LINUX_ADXL_H #define _LINUX_ADXL_H +#ifdef CONFIG_ACPI_ADXL const char * const *adxl_get_component_names(void); int adxl_decode(u64 addr, u64 component_values[]); +#else +static inline const char * const *adxl_get_component_names(void) { return NULL; } +static inline int adxl_decode(u64 addr, u64 component_values[]) { return -EOPNOTSUPP; } +#endif #endif /* _LINUX_ADXL_H */ -- 2.25.1