linux-kernel - [PATCH] ARM: mark prepare_page_table as _

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Date:   Tue, 11 May 2021 11:03:13 +0200
From:   Arnd Bergmann <arnd@...nel.org>
To:     Russell King <linux@...linux.org.uk>
Cc:     Arnd Bergmann <arnd@...db.de>, Mike Rapoport <rppt@...nel.org>,
        Ard Biesheuvel <ardb@...nel.org>,
        Linus Walleij <linus.walleij@...aro.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Hailong Liu <carver4lio@....com>,
        Changbin Du <changbin.du@...el.com>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH] ARM: mark prepare_page_table as __init

From: Arnd Bergmann <arnd@...db.de>

In some configurations when building with gcc-11, prepare_page_table
does not get inline, which causes a build time warning for a section
mismatch:

WARNING: modpost: vmlinux.o(.text.unlikely+0xce8): Section mismatch in reference from the function prepare_page_table() to the (unknown reference) .init.data:(unknown)
The function prepare_page_table() references
the (unknown reference) __initdata (unknown).
This is often because prepare_page_table lacks a __initdata
annotation or the annotation of (unknown) is wrong.

Mark the function as __init to avoid the warning regardless of the
inlining.

Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
 arch/arm/mm/mmu.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c
index 051f4f82414b..5220b8147f40 100644
--- a/arch/arm/mm/mmu.c
+++ b/arch/arm/mm/mmu.c
@@ -1246,7 +1246,7 @@ void __init adjust_lowmem_bounds(void)
 	memblock_set_current_limit(memblock_limit);
 }
 
-static inline void prepare_page_table(void)
+static inline __init void prepare_page_table(void)
 {
 	unsigned long addr;
 	phys_addr_t end;
-- 
2.29.2