__pfn_to_phys() was introduced with commit 8b79eb6f5b53e ("libnvdimm, pfn,
pmem: allocate memmap array in persistent memory") but not declared for
m68k in nommu configurations. This results in the following build error.
mm/page_alloc.c: In function 'memmap_init_zone':
mm/page_alloc.c:4610:9: error: implicit declaration of function '__pfn_to_phys'
Fixes: 8b79eb6f5b53e ("libnvdimm, pfn, pmem: allocate memmap array in persistent memory")
Cc: Dan Williams <dan.j.williams@xxxxxxxxx>
Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Guenter Roeck <linux@xxxxxxxxxxxx>
---
arch/m68k/include/asm/page_no.h | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/m68k/include/asm/page_no.h b/arch/m68k/include/asm/page_no.h
index fa7f32d9836b..f389f575b93f 100644
--- a/arch/m68k/include/asm/page_no.h
+++ b/arch/m68k/include/asm/page_no.h
@@ -19,6 +19,8 @@ extern unsigned long memory_end;
#define __pa(vaddr) ((unsigned long)(vaddr))
#define __va(paddr) ((void *)(paddr))
+#define __pfn_to_phys(pfn) PFN_PHYS(pfn)
+
#define virt_to_pfn(kaddr) (__pa(kaddr) >> PAGE_SHIFT)
#define pfn_to_virt(pfn) __va((pfn) << PAGE_SHIFT)
--
2.1.4
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