The asm/module.h header file can not be included standalone, which
breaks the module signing code after a recent change:

In file included from kernel/module-internal.h:13,
                 from kernel/module_signing.c:17:
arch/arm/include/asm/module.h:37:27: error: 'struct module' declared inside 
parameter list will not be visible outside of this definition or declaration 
[-Werror]
 u32 get_module_plt(struct module *mod, unsigned long loc, Elf32_Addr val);

This adds a forward declaration of struct module to make it all work.

Fixes: f314dfea16a0 ("modsign: log module name in the event of an error")
Signed-off-by: Arnd Bergmann <a...@arndb.de>
---
I guess it would be useful if Jessica can pick this change up
in her tree that introduced the warning.
---
 arch/arm/include/asm/module.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm/include/asm/module.h b/arch/arm/include/asm/module.h
index 89ad0596033a..9e81b7c498d8 100644
--- a/arch/arm/include/asm/module.h
+++ b/arch/arm/include/asm/module.h
@@ -34,6 +34,7 @@ struct mod_arch_specific {
 #endif
 };
 
+struct module;
 u32 get_module_plt(struct module *mod, unsigned long loc, Elf32_Addr val);
 
 /*
-- 
2.9.0

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