linux-kernel - [PATCH] powerpc/47x: Add prototype for mmu_init

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Date:   Thu, 17 Aug 2023 16:25:49 +0200
From:   Christophe Leroy <christophe.leroy@...roup.eu>
To:     Michael Ellerman <mpe@...erman.id.au>,
        Nicholas Piggin <npiggin@...il.com>
Cc:     Christophe Leroy <christophe.leroy@...roup.eu>,
        linux-kernel@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
        Arnd Bergmann <arnd@...db.de>
Subject: [PATCH] powerpc/47x: Add prototype for mmu_init_secondary()

A W=1 build of 44x/iss476-smp_defconfig gives:

arch/powerpc/mm/nohash/44x.c:220:13: error: no previous prototype for 'mmu_init_secondary' [-Werror=missing-prototypes]
  220 | void __init mmu_init_secondary(int cpu)
      |             ^~~~~~~~~~~~~~~~~~

That function is called from head_4xx.S

Add a prototype in mmu_decl.h

Signed-off-by: Christophe Leroy <christophe.leroy@...roup.eu>
Cc: Arnd Bergmann <arnd@...db.de>
---
 arch/powerpc/mm/mmu_decl.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/powerpc/mm/mmu_decl.h b/arch/powerpc/mm/mmu_decl.h
index c6dccb4f06dc..7f9ff0640124 100644
--- a/arch/powerpc/mm/mmu_decl.h
+++ b/arch/powerpc/mm/mmu_decl.h
@@ -110,6 +110,7 @@ extern void MMU_init_hw(void);
 void MMU_init_hw_patch(void);
 unsigned long mmu_mapin_ram(unsigned long base, unsigned long top);
 #endif
+void mmu_init_secondary(int cpu);
 
 #ifdef CONFIG_PPC_E500
 extern unsigned long map_mem_in_cams(unsigned long ram, int max_cam_idx,
-- 
2.41.0