linux-kernel - [PATCH 15/15] arm64: add alt_cb_patch

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Message-Id: <20230516160642.523862-16-arnd@kernel.org>
Date:   Tue, 16 May 2023 18:06:42 +0200
From:   Arnd Bergmann <arnd@...nel.org>
To:     Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>
Cc:     Arnd Bergmann <arnd@...db.de>, Ard Biesheuvel <ardb@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Marc Zyngier <maz@...nel.org>,
        Oliver Upton <oliver.upton@...ux.dev>,
        James Morse <james.morse@....com>,
        Suzuki K Poulose <suzuki.poulose@....com>,
        Zenghui Yu <yuzenghui@...wei.com>,
        Anshuman Khandual <anshuman.khandual@....com>,
        Kees Cook <keescook@...omium.org>,
        Suren Baghdasaryan <surenb@...gle.com>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-efi@...r.kernel.org, kvmarm@...ts.linux.dev
Subject: [PATCH 15/15] arm64: add alt_cb_patch_nops prototype

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

alt_cb_patch_nops() is called through an inline asm macro, so
it does not need a prototype for the caller, but adding it
avoids this W=1 build warning:

arch/arm64/kernel/alternative.c:295:14: error: no previous prototype for 'alt_cb_patch_nops' [-Werror=missing-prototypes]

Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
 arch/arm64/include/asm/alternative.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/arch/arm64/include/asm/alternative.h b/arch/arm64/include/asm/alternative.h
index a38b92e11811..55da3fedcfe2 100644
--- a/arch/arm64/include/asm/alternative.h
+++ b/arch/arm64/include/asm/alternative.h
@@ -31,5 +31,8 @@ void apply_alternatives_module(void *start, size_t length);
 static inline void apply_alternatives_module(void *start, size_t length) { }
 #endif
 
+void alt_cb_patch_nops(struct alt_instr *alt, __le32 *origptr,
+		       __le32 *updptr, int nr_inst);
+
 #endif /* __ASSEMBLY__ */
 #endif /* __ASM_ALTERNATIVE_H */
-- 
2.39.2