The patch titled
Subject: decompressor: provide missing prototypes
has been added to the -mm mm-hotfixes-unstable branch. Its filename is
decompressor-provide-missing-prototypes.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/decompressor-provide-missing-prototypes.patch
This patch will later appear in the mm-hotfixes-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: Arnd Bergmann <arnd@xxxxxxxx>
Subject: decompressor: provide missing prototypes
Date: Wed, 17 May 2023 15:19:31 +0200
The entry points for the decompressor don't always have a prototype
included in the .c file:
lib/decompress_inflate.c:42:17: error: no previous prototype for '__gunzip' [-Werror=missing-prototypes]
lib/decompress_unxz.c:251:17: error: no previous prototype for 'unxz' [-Werror=missing-prototypes]
lib/decompress_unzstd.c:331:17: error: no previous prototype for 'unzstd' [-Werror=missing-prototypes]
Include the correct headers for unxz and unzstd, and mark the inflate
function above as unconditionally 'static' to avoid these warnings.
Link: https://lkml.kernel.org/r/20230517131936.936840-1-arnd@xxxxxxxxxx
Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
Cc: Nick Terrell <terrelln@xxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
lib/decompress_inflate.c | 2 +-
lib/decompress_unxz.c | 2 ++
lib/decompress_unzstd.c | 2 ++
3 files changed, 5 insertions(+), 1 deletion(-)
--- a/lib/decompress_inflate.c~decompressor-provide-missing-prototypes
+++ a/lib/decompress_inflate.c
@@ -39,7 +39,7 @@ static long INIT nofill(void *buffer, un
}
/* Included from initramfs et al code */
-STATIC int INIT __gunzip(unsigned char *buf, long len,
+static int INIT __gunzip(unsigned char *buf, long len,
long (*fill)(void*, unsigned long),
long (*flush)(void*, unsigned long),
unsigned char *out_buf, long out_len,
--- a/lib/decompress_unxz.c~decompressor-provide-missing-prototypes
+++ a/lib/decompress_unxz.c
@@ -102,6 +102,8 @@
*/
#ifdef STATIC
# define XZ_PREBOOT
+#else
+#include <linux/decompress/unxz.h>
#endif
#ifdef __KERNEL__
# include <linux/decompress/mm.h>
--- a/lib/decompress_unzstd.c~decompressor-provide-missing-prototypes
+++ a/lib/decompress_unzstd.c
@@ -69,6 +69,8 @@
# define UNZSTD_PREBOOT
# include "xxhash.c"
# include "zstd/decompress_sources.h"
+#else
+#include <linux/decompress/unzstd.h>
#endif
#include <linux/decompress/mm.h>
_
Patches currently in -mm which might be from arnd@xxxxxxxx are
radix-tree-move-declarations-to-header.patch
decompressor-provide-missing-prototypes.patch
kasan-add-kasan_tag_mismatch-prototype.patch
kasan-use-internal-prototypes-matching-gcc-13-builtins.patch
