EDAC, skx: Fix randconfig builds in a better way

It was previously noted that Kconfig complained about unmet dependencies
when trying to configure skx_edac together with CONFIG_ACPI=n. First fix
for this checked for ACPI when doing

  select ACPI_ADXL

but this required stub functions for the case where ACPI wasn't
selected. It also allowed building a driver that didn't actually work
for a system that has non-volatile DIMMs.

Arnd Bergmann pointed out that the right fix is to make EDAC_SKX
"depend on ACPI".

Fixes: a324e9396ca3 ("EDAC, skx: Fix randconfig builds")
Signed-off-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
CC: "Rafael J. Wysocki" <rafael.j.wysocki@intel.com>
CC: Arnd Bergmann <arnd@arndb.de>
CC: Mauro Carvalho Chehab <mchehab@kernel.org>
CC: linux-edac <linux-edac@vger.kernel.org>
CC: qiuxu.zhuo@intel.com
Link: http://lkml.kernel.org/r/20181106183914.GA26731@agluck-desk

2 files changed, 2 insertions, 7 deletions

diff --git a/drivers/edac/Kconfig b/drivers/edac/Kconfig
index ec2727b27556..e286b5b99003 100644
--- a/drivers/edac/Kconfig
+++ b/drivers/edac/Kconfig
@@ -231,10 +231,10 @@ config EDAC_SBRIDGE
 
 config EDAC_SKX
         tristate "Intel Skylake server Integrated MC"
-        depends on PCI && X86_64 && X86_MCE_INTEL && PCI_MMCONFIG
+        depends on PCI && X86_64 && X86_MCE_INTEL && PCI_MMCONFIG && ACPI
         depends on ACPI_NFIT || !ACPI_NFIT # if ACPI_NFIT=m, EDAC_SKX can't be y
         select DMI
-        select ACPI_ADXL if ACPI
+        select ACPI_ADXL
         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 2d29f55923e3..2a629acb4c3f 100644
--- a/include/linux/adxl.h
+++ b/include/linux/adxl.h
@@ -7,12 +7,7 @@
 #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 */