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ARM: 9302/1: traps: hide unused functions on NOMMU 

A couple of functions in this file are only used on MMU-enabled
builds, and never even declared otherwise, causing these build
warnings:

arch/arm/kernel/traps.c:759:6: error: no previous prototype for '__pte_error' [-Werror=missing-prototypes]
arch/arm/kernel/traps.c:764:6: error: no previous prototype for '__pmd_error' [-Werror=missing-prototypes]
arch/arm/kernel/traps.c:769:6: error: no previous prototype for '__pgd_error' [-Werror=missing-prototypes]

Protect these in an #ifdef to avoid the warnings and save a little
bit of .text space.

Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
This commit is contained in:
Arnd Bergmann 2023-06-02 19:28:39 +01:00 committed by Russell King (Oracle)
parent a9f8f2b287
commit 4b026ca3e2
1 changed files with 2 additions and 0 deletions
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2
arch/arm/kernel/traps.c
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@ -756,6 +756,7 @@ void __readwrite_bug(const char *fn)
}
EXPORT_SYMBOL(__readwrite_bug);
#ifdef CONFIG_MMU
void __pte_error(const char *file, int line, pte_t pte)
{
pr_err("%s:%d: bad pte %08llx.\n", file, line, (long long)pte_val(pte));
@ -770,6 +771,7 @@ void __pgd_error(const char *file, int line, pgd_t pgd)
{
pr_err("%s:%d: bad pgd %08llx.\n", file, line, (long long)pgd_val(pgd));
}
#endif
asmlinkage void __div0(void)
{