[PATCH 1/5] powerpc/suspend: Add prototype for do_after_copyback()

[Michael Ellerman]

With HIBERNATION=y the build breaks with:

  arch/powerpc/kernel/swsusp_64.c:14:6: error: no previous prototype for 
‘do_after_copyback’ [-Werror=missing-prototypes]
  14 | void do_after_copyback(void)
     |      ^~~~~~~~~~~~~~~~~

do_after_copyback() is only called from asm, so there is no prototype,
nor any header where it makes sense to place one. Just add a prototype
in the C file to fix the build error.

Signed-off-by: Michael Ellerman <m...@ellerman.id.au>
---
 arch/powerpc/kernel/swsusp_64.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/powerpc/kernel/swsusp_64.c b/arch/powerpc/kernel/swsusp_64.c
index 16ee3baaf09a..50fa8fc9ef95 100644
--- a/arch/powerpc/kernel/swsusp_64.c
+++ b/arch/powerpc/kernel/swsusp_64.c
@@ -11,6 +11,8 @@
 #include <linux/interrupt.h>
 #include <linux/nmi.h>
 
+void do_after_copyback(void);
+
 void do_after_copyback(void)
 {
        iommu_restore();
-- 
2.41.0