linux-kernel - [PATCH v4 1/2] asm-generic/bug.h: declare struct pt

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Message-Id: <20170523160112.3446-2-abbotti@mev.co.uk>
Date:   Tue, 23 May 2017 17:01:11 +0100
From:   Ian Abbott <abbotti@....co.uk>
To:     linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org
Cc:     Arnd Bergmann <arnd@...db.de>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Michal Nazarewicz <mina86@...a86.com>,
        Hidehiro Kawai <hidehiro.kawai.ez@...achi.com>,
        Borislav Petkov <bp@...e.de>,
        Rasmus Villemoes <linux@...musvillemoes.dk>,
        Johannes Berg <johannes.berg@...el.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Alexander Potapenko <glider@...gle.com>,
        Ian Abbott <abbotti@....co.uk>
Subject: [PATCH v4 1/2] asm-generic/bug.h: declare struct pt_regs; before function prototype

The declaration of `__warn()` has `struct pt_regs *regs` as one of its
parameters.  This can result in compiler warnings if `struct regs` is
not already declared.  Add an empty declaration of `struct pt_regs` to
avoid the warnings.

Signed-off-by: Ian Abbott <abbotti@....co.uk>
Cc: Arnd Bergmann <arnd@...db.de>
Acked-by: Arnd Bergmann <arnd@...db.de>
---
v3: Actually, there was no v1 or v2.  I called this v3 to match the
series.
v4: Corrected 'Acked-by:' line in patch description.
---
 include/asm-generic/bug.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/asm-generic/bug.h b/include/asm-generic/bug.h
index d6f4aed479a1..87191357d303 100644
--- a/include/asm-generic/bug.h
+++ b/include/asm-generic/bug.h
@@ -97,6 +97,7 @@ extern void warn_slowpath_null(const char *file, const int line);
 
 /* used internally by panic.c */
 struct warn_args;
+struct pt_regs;
 
 void __warn(const char *file, int line, void *caller, unsigned taint,
 	    struct pt_regs *regs, struct warn_args *args);
-- 
2.11.0