[PATCH v2 2/2] riscv: Fix build warning for mm/pageattr

[Zong Li]

Add header for missing prototype. Also, static keyword should be at
beginning of declaration.

The warning messages as follows (with W=1 build):

arch/riscv/mm/pageattr.c:130:5:
warning: no previous prototype for 'set_memory_ro' [-Wmissing-prototypes]

arch/riscv/mm/pageattr.c:136:5:
warning: no previous prototype for 'set_memory_rw' [-Wmissing-prototypes]

arch/riscv/mm/pageattr.c:142:5:
warning: no previous prototype for 'set_memory_x' [-Wmissing-prototypes]

arch/riscv/mm/pageattr.c:147:5:
warning: no previous prototype for 'set_memory_nx' [-Wmissing-prototypes]

arch/riscv/mm/pageattr.c:152:5:
warning: no previous prototype for 'set_direct_map_invalid_noflush' [-Wmissing-prototypes]

arch/riscv/mm/pageattr.c:169:5:
warning: no previous prototype for 'set_direct_map_default_noflush' [-Wmissing-prototypes]

arch/riscv/mm/pageattr.c:97:1:
warning: 'static' is not at beginning of declaration [-Wold-style-declaration]

Signed-off-by: Zong Li <zong.li at sifive.com>
Reviewed-by: Pekka Enberg <penberg at kernel.org>
---
 arch/riscv/mm/pageattr.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/riscv/mm/pageattr.c b/arch/riscv/mm/pageattr.c
index 289a9a5ea5b5..19fecb362d81 100644
--- a/arch/riscv/mm/pageattr.c
+++ b/arch/riscv/mm/pageattr.c
@@ -7,6 +7,7 @@
 #include <linux/pgtable.h>
 #include <asm/tlbflush.h>
 #include <asm/bitops.h>
+#include <asm/set_memory.h>
 
 struct pageattr_masks {
 	pgprot_t set_mask;
@@ -94,7 +95,7 @@ static int pageattr_pte_hole(unsigned long addr, unsigned long next,
 	return 0;
 }
 
-const static struct mm_walk_ops pageattr_ops = {
+static const struct mm_walk_ops pageattr_ops = {
 	.pgd_entry = pageattr_pgd_entry,
 	.p4d_entry = pageattr_p4d_entry,
 	.pud_entry = pageattr_pud_entry,
-- 
2.27.0