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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 16/16] ARM: xip-kernel: add __inflate_kernel_data prototype
Date: Tue, 16 May 2023 17:46:05 +0200	[thread overview]
Message-ID: <20230516154605.517690-17-arnd@kernel.org> (raw)
In-Reply-To: <20230516154605.517690-1-arnd@kernel.org>

From: Arnd Bergmann <arnd@arndb.de>

The kernel .data decompression is called from assembler, so it does
not need a prototype, but adding one avoids this W=1 warning:

arch/arm/kernel/head-inflate-data.c:35:12: error: no previous prototype for '__inflate_kernel_data' [-Werror=missing-prototypes]

The same file contains a few extern declarations for assembler
symbols, move those into the header as well for consistency.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 arch/arm/kernel/head-inflate-data.c | 5 +----
 arch/arm/kernel/head.h              | 8 ++++++++
 2 files changed, 9 insertions(+), 4 deletions(-)
 create mode 100644 arch/arm/kernel/head.h

diff --git a/arch/arm/kernel/head-inflate-data.c b/arch/arm/kernel/head-inflate-data.c
index 89a52104d32a..225c0699a12c 100644
--- a/arch/arm/kernel/head-inflate-data.c
+++ b/arch/arm/kernel/head-inflate-data.c
@@ -8,16 +8,13 @@
 
 #include <linux/init.h>
 #include <linux/zutil.h>
+#include "head.h"
 
 /* for struct inflate_state */
 #include "../../../lib/zlib_inflate/inftrees.h"
 #include "../../../lib/zlib_inflate/inflate.h"
 #include "../../../lib/zlib_inflate/infutil.h"
 
-extern char __data_loc[];
-extern char _edata_loc[];
-extern char _sdata[];
-
 /*
  * This code is called very early during the boot process to decompress
  * the .data segment stored compressed in ROM. Therefore none of the global
diff --git a/arch/arm/kernel/head.h b/arch/arm/kernel/head.h
new file mode 100644
index 000000000000..6eccf98fc2cc
--- /dev/null
+++ b/arch/arm/kernel/head.h
@@ -0,0 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-only
+
+extern char __data_loc[];
+extern char _edata_loc[];
+extern char _sdata[];
+
+int __init __inflate_kernel_data(void);
+
-- 
2.39.2


  parent reply	other threads:[~2023-05-16 15:48 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-05-16 15:45 [PATCH 00/16] ARM: address -Wmissing-prototype warnings Arnd Bergmann
2023-05-16 15:45 ` [PATCH 01/16] ARM: dma-mapping: hide unused dma_contiguous_early_fixup function Arnd Bergmann
2023-05-16 15:45 ` [PATCH 02/16] ARM: traps: hide unused functions on NOMMU Arnd Bergmann
2023-05-16 15:45 ` [PATCH 03/16] ARM: vfp: include asm/neon.h in vfpmodule.c Arnd Bergmann
2023-05-16 15:45 ` [PATCH 04/16] ARM: vdso: add missing prototypes Arnd Bergmann
2023-05-16 15:45 ` [PATCH 05/16] ARM: kprobes: avoid missing-declaration warnings Arnd Bergmann
2023-05-17  1:29   ` Masami Hiramatsu
2023-05-16 15:45 ` [PATCH 06/16] ARM: tcm: move tcm_init() prototype to asm/tcm.h Arnd Bergmann
2023-05-22  7:34   ` Linus Walleij
2023-05-16 15:45 ` [PATCH 07/16] ARM: add prototype for function called only from asm Arnd Bergmann
2023-05-16 15:45 ` [PATCH 08/16] ARM: add clear/copy_user_highpage declarations Arnd Bergmann
2023-05-16 15:45 ` [PATCH 09/16] ARM: cacheflush: avoid __flush_anon_page() missing-prototype warning Arnd Bergmann
2023-05-16 15:45 ` [PATCH 10/16] ARM: nommu: include asm/idmap.h Arnd Bergmann
2023-05-16 15:46 ` [PATCH 11/16] ARM: move setup functions to header Arnd Bergmann
2023-05-22  7:35   ` Linus Walleij
2023-05-16 15:46 ` [PATCH 12/16] ARM: fiq: include asm/mach/irq.h for prototypes Arnd Bergmann
2023-05-16 15:46 ` [PATCH 13/16] ARM: vfp: add vfp_entry prototype Arnd Bergmann
2023-05-17 11:13   ` Ard Biesheuvel
2023-05-16 15:46 ` [PATCH 14/16] ARM: add missing syscall prototypes Arnd Bergmann
2023-05-16 15:46 ` [PATCH 15/16] ARM: decompressor: move function prototypes to misc.h Arnd Bergmann
2023-05-16 15:46 ` Arnd Bergmann [this message]
2023-05-16 19:56 ` [PATCH 00/16] ARM: address -Wmissing-prototype warnings Kees Cook

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