[PATCH] powerpc/64e: Rewrite p4d_populate() as a static inline function

[Christophe Leroy]

Rewrite p4d_populate() as a static inline function instead of
a macro.

This change allows typechecking and would have helped detecting
a recently found bug in map_kernel_page().

Cc: Mike Rapoport <rppt at kernel.org>
Signed-off-by: Christophe Leroy <christophe.leroy at csgroup.eu>
---
 arch/powerpc/include/asm/nohash/64/pgalloc.h | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/arch/powerpc/include/asm/nohash/64/pgalloc.h b/arch/powerpc/include/asm/nohash/64/pgalloc.h
index 668aee6017e7..e50b211becb3 100644
--- a/arch/powerpc/include/asm/nohash/64/pgalloc.h
+++ b/arch/powerpc/include/asm/nohash/64/pgalloc.h
@@ -15,7 +15,10 @@ struct vmemmap_backing {
 };
 extern struct vmemmap_backing *vmemmap_list;
 
-#define p4d_populate(MM, P4D, PUD)	p4d_set(P4D, (unsigned long)PUD)
+static inline void p4d_populate(struct mm_struct *mm, p4d_t *p4d, pud_t *pud)
+{
+	p4d_set(p4d, (unsigned long)pud);
+}
 
 static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long addr)
 {
-- 
2.36.1