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From:   Arnd Bergmann <arnd@kernel.org>
To:     Russell King <linux@armlinux.org.uk>
Cc:     Arnd Bergmann <arnd@arndb.de>,
        Steven Rostedt <rostedt@goodmis.org>,
        Masami Hiramatsu <mhiramat@kernel.org>,
        Mark Rutland <mark.rutland@arm.com>,
        Oleg Nesterov <oleg@redhat.com>,
        "Rafael J. Wysocki" <rafael@kernel.org>,
        Pavel Machek <pavel@ucw.cz>,
        Linus Walleij <linus.walleij@linaro.org>,
        Ard Biesheuvel <ardb@kernel.org>,
        Kees Cook <keescook@chromium.org>,
        linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org,
        linux-trace-kernel@vger.kernel.org, linux-pm@vger.kernel.org
Subject: [PATCH 09/16] ARM: cacheflush: avoid __flush_anon_page() missing-prototype warning
Date:   Tue, 16 May 2023 17:45:58 +0200
Message-Id: <20230516154605.517690-10-arnd@kernel.org>
In-Reply-To: <20230516154605.517690-1-arnd@kernel.org>
References: <20230516154605.517690-1-arnd@kernel.org>
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From: Arnd Bergmann <arnd@arndb.de>

The prototype for __flush_anon_page() is intentionally hidden
inside the flush_anon_page() inline function to prevent it from
being called from drivers.

When building with 'W=1', this causes a warning:

arch/arm/mm/flush.c:358:6: error: no previous prototype for '__flush_anon_page' [-Werror=missing-prototypes]

Work around this by adding a prototype directly next to the function
definition.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 arch/arm/mm/flush.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm/mm/flush.c b/arch/arm/mm/flush.c
index 9b112009c708..43678137a9b2 100644
--- a/arch/arm/mm/flush.c
+++ b/arch/arm/mm/flush.c
@@ -355,6 +355,7 @@ EXPORT_SYMBOL(flush_dcache_page);
  *  memcpy() to/from page
  *  if written to page, flush_dcache_page()
  */
+void __flush_anon_page(struct vm_area_struct *vma, struct page *page, unsigned long vmaddr);
 void __flush_anon_page(struct vm_area_struct *vma, struct page *page, unsigned long vmaddr)
 {
 	unsigned long pfn;
-- 
2.39.2