arm64: add alt_cb_patch_nops prototype

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@arndb.de>
Reviewed-by: Kees Cook <keescook@chromium.org>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Link: https://lore.kernel.org/r/20230516160642.523862-16-arnd@kernel.org
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>

diff --git a/arch/arm64/include/asm/alternative.h b/arch/arm64/include/asm/alternative.h
index a38b92e11811e8b1ce379df536e11545bff4f1cc..55da3fedcfe29b451b485b3f576fb3101e7e54ac 100644 (file)
--- 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 */