From: Nathan Chancellor <natechancellor@gmail.com>
Date: Mon, 28 Sep 2020 12:45:55 -0700
Subject: ACPI / NUMA: Add stub function for pxm_to_node()
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Patch-mainline: v5.10-rc1
Git-commit: 4849bc777049b568a35d5d63ae326e93f0fff9de
References: jsc#SLE-16407

After commit 01feba590cd6 ("ACPI: Do not create new NUMA domains from
ACPI static tables that are not SRAT"):

$ scripts/config --file arch/x86/configs/x86_64_defconfig -d NUMA -e ACPI_NFIT

$ make -skj"$(nproc)" distclean defconfig drivers/acpi/nfit/
drivers/acpi/nfit/core.c: In function ‘acpi_nfit_register_region’:
drivers/acpi/nfit/core.c:3010:27: error: implicit declaration of
function ‘pxm_to_node’; did you mean ‘xa_to_node’?
[-Werror=implicit-function-declaration]
 3010 |   ndr_desc->target_node = pxm_to_node(spa->proximity_domain);
      |                           ^~~~~~~~~~~
      |                           xa_to_node
cc1: some warnings being treated as errors
...

Add a stub function like acpi_map_pxm_to_node() had so that the build
continues to work.

Fixes: 01feba590cd6 ("ACPI: Do not create new NUMA domains from ACPI static tables that are not SRAT")
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org> # build-tested
Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Hanjun Guo <guohanjun@huawei.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Lee, Chun-Yi <jlee@suse.com>
---
 include/acpi/acpi_numa.h |    4 ++++
 1 file changed, 4 insertions(+)

--- a/include/acpi/acpi_numa.h
+++ b/include/acpi/acpi_numa.h
@@ -26,6 +26,10 @@ extern int srat_disabled(void);
 static inline void disable_srat(void)
 {
 }
+static inline int pxm_to_node(int pxm)
+{
+	return 0;
+}
 #endif				/* CONFIG_ACPI_NUMA */
 
 #ifdef CONFIG_ACPI_HMAT