linux-kernel - [PATCH] powerpc: Remove stale declarations in mmu

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Message-Id: <a821e8397dd56b8177ecc04966d3b3a7c4bda6d4.1660919016.git.christophe.leroy@csgroup.eu>
Date:   Fri, 19 Aug 2022 16:23:43 +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
Subject: [PATCH] powerpc: Remove stale declarations in mmu_decl.h

rtas_size and rtas_data are not used anymore since at least
commit 7c8c6b9776fb ("powerpc: Merge lmb.c and make MM initialization
use it.")

Remove them.

Since commit 4b74a35fc7e9 ("powerpc/32s: Make Hash var static")
the forward declaration of struct hash_pte is unneeded.

Remove it.

__initial_memory_limit_addr was removed by commit e63075a3c937 ("memblock:
Introduce default allocation limit and use it to replace explicit ones")

Remove the declaration.

Signed-off-by: Christophe Leroy <christophe.leroy@...roup.eu>
---
 arch/powerpc/include/asm/setup.h | 1 -
 arch/powerpc/mm/mmu_decl.h       | 4 ----
 2 files changed, 5 deletions(-)

diff --git a/arch/powerpc/include/asm/setup.h b/arch/powerpc/include/asm/setup.h
index d8c28902cf59..dd461b2c825c 100644
--- a/arch/powerpc/include/asm/setup.h
+++ b/arch/powerpc/include/asm/setup.h
@@ -7,7 +7,6 @@
 #ifndef __ASSEMBLY__
 extern void ppc_printk_progress(char *s, unsigned short hex);
 
-extern unsigned int rtas_data;
 extern unsigned long long memory_limit;
 extern void *zalloc_maybe_bootmem(size_t size, gfp_t mask);
 
diff --git a/arch/powerpc/mm/mmu_decl.h b/arch/powerpc/mm/mmu_decl.h
index 229c72e49198..8f5afad1b6af 100644
--- a/arch/powerpc/mm/mmu_decl.h
+++ b/arch/powerpc/mm/mmu_decl.h
@@ -92,15 +92,11 @@ extern void mapin_ram(void);
 extern void setbat(int index, unsigned long virt, phys_addr_t phys,
 		   unsigned int size, pgprot_t prot);
 
-extern unsigned int rtas_data, rtas_size;
-
-struct hash_pte;
 extern u8 early_hash[];
 
 #endif /* CONFIG_PPC32 */
 
 extern unsigned long __max_low_memory;
-extern phys_addr_t __initial_memory_limit_addr;
 extern phys_addr_t total_memory;
 extern phys_addr_t total_lowmem;
 extern phys_addr_t memstart_addr;
-- 
2.37.1