From: Lukas Bulwahn <lukas.bulwahn@gmail.com>
To: Jann Horn <jannh@google.com>, Andrew Morton <akpm@linux-foundation.org>
Cc: Arnd Bergmann <arnd@arndb.de>, Tom Rix <trix@redhat.com>,
Nathan Chancellor <natechancellor@gmail.com>,
Nick Desaulniers <ndesaulniers@google.com>,
clang-built-linux@googlegroups.com,
kernel-janitors@vger.kernel.org, linux-kernel@vger.kernel.org,
Lukas Bulwahn <lukas.bulwahn@gmail.com>
Subject: [PATCH] zlib: define get_unaligned16() only when used
Date: Tue, 24 Nov 2020 11:40:30 +0100 [thread overview]
Message-ID: <20201124104030.903-1-lukas.bulwahn@gmail.com> (raw)
Since commit acaab7335bd6 ("lib/zlib: remove outdated and incorrect
pre-increment optimization"), get_unaligned16() is only used when
!CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS.
Hence, make CC=clang W=1 warns:
lib/zlib_inflate/inffast.c:20:1:
warning: unused function 'get_unaligned16' [-Wunused-function]
Define get_unaligned16() only when it is actually used.
Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
---
applies cleanly on current master and next-20201124
Jann, please ack.
Andrew, please pick this minor non-urgent clean-up patch.
lib/zlib_inflate/inffast.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/lib/zlib_inflate/inffast.c b/lib/zlib_inflate/inffast.c
index ed1f3df27260..ca66d9008228 100644
--- a/lib/zlib_inflate/inffast.c
+++ b/lib/zlib_inflate/inffast.c
@@ -15,7 +15,8 @@ union uu {
unsigned char b[2];
};
-/* Endian independed version */
+#ifndef CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS
+/* Endian independent version */
static inline unsigned short
get_unaligned16(const unsigned short *p)
{
@@ -26,6 +27,7 @@ get_unaligned16(const unsigned short *p)
mm.b[1] = b[1];
return mm.us;
}
+#endif
/*
Decode literal, length, and distance codes and write out the resulting
--
2.17.1
next reply other threads:[~2020-11-24 10:40 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-24 10:40 Lukas Bulwahn [this message]
2020-11-24 11:08 ` [PATCH] zlib: define get_unaligned16() only when used Jann Horn
2020-11-24 11:50 ` Christoph Hellwig
2020-11-24 11:56 ` Arnd Bergmann
2020-11-24 12:00 ` Lukas Bulwahn
2020-11-24 13:31 ` David Laight
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