m68k: fix __page_to_pfn for a const struct page argument

Fixes fallout due to the removal of the cast in commit aa462abe8aaf
("mm: fix __page_to_pfn for a const struct page argument")

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: linux-m68k@lists.linux-m68k.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/arch/m68k/include/asm/page_mm.h b/arch/m68k/include/asm/page_mm.h
index 31d5570d65676784afd92a95665073e9179bb2e2..89f201434b5aa2575a5837bc6730346e06cc7e30 100644 (file)
--- a/arch/m68k/include/asm/page_mm.h
+++ b/arch/m68k/include/asm/page_mm.h
@@ -162,7 +162,7 @@ static inline __attribute_const__ int __virt_to_node_shift(void)
        pgdat->node_mem_map + (__pfn - pgdat->node_start_pfn);          \
 })
 #define page_to_pfn(_page) ({                                          \
-       struct page *__p = (_page);                                     \
+       const struct page *__p = (_page);                               \
        struct pglist_data *pgdat;                                      \
        pgdat = &pg_data_map[page_to_nid(__p)];                         \
        ((__p) - pgdat->node_mem_map) + pgdat->node_start_pfn;          \