[tip: x86/cleanups] x86: Add dummy prototype for mk_early_pgtbl_32()

[tip-bot2 for Arnd Bergmann]

The following commit has been merged into the x86/cleanups branch of tip:

Commit-ID:     2eb5d1df2aa657ccc65cfab67e65eb9f97cef4d6
Gitweb:        https://git.kernel.org/tip/2eb5d1df2aa657ccc65cfab67e65eb9f97cef4d6
Author:        Arnd Bergmann <arnd@xxxxxxxx>
AuthorDate:    Tue, 16 May 2023 21:35:34 +02:00
Committer:     Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>
CommitterDate: Thu, 18 May 2023 11:56:16 -07:00

x86: Add dummy prototype for mk_early_pgtbl_32()

'make W=1' warns about a function without a prototype in the x86-32 head code:

arch/x86/kernel/head32.c:72:13: error: no previous prototype for 'mk_early_pgtbl_32' [-Werror=missing-prototypes]

This is called from assembler code, so it does not actually need a prototype.
I could not find an appropriate header for it, so just declare it in front
of the definition to shut up the warning.

Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
Signed-off-by: Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>
Reviewed-by: Alexander Lobakin <aleksander.lobakin@xxxxxxxxx>
Link: https://lore.kernel.org/all/20230516193549.544673-6-arnd%40kernel.org
---
 arch/x86/kernel/head32.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/x86/kernel/head32.c b/arch/x86/kernel/head32.c
index 10c27b4..246a609 100644
--- a/arch/x86/kernel/head32.c
+++ b/arch/x86/kernel/head32.c
@@ -69,6 +69,7 @@ asmlinkage __visible void __init __noreturn i386_start_kernel(void)
  * to the first kernel PMD. Note the upper half of each PMD or PTE are
  * always zero at this stage.
  */
+void __init mk_early_pgtbl_32(void);
 void __init mk_early_pgtbl_32(void)
 {
 #ifdef __pa