From dc221138c809125dc1bbff8506c70cb7bd846368 Mon Sep 17 00:00:00 2001
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From: Khem Raj <raj.khem@gmail.com>
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Date: Wed, 12 Sep 2018 17:08:58 -0700
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Subject: [PATCH] include linux/stddef.h in swab.h uapi header
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swab.h uses __always_inline without including the header where it is
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defined, this is exposed by musl based distributions where this macro is
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not defined by system C library headers unlike glibc where it is defined
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in sys/cdefs.h and that header gets pulled in indirectly via
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features.h -> sys/cdefs.h
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and features.h gets pulled in a lot of headers. Therefore it may work in
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cases where features.h is includes but not otherwise.
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Adding linux/stddef.h here ensures that __always_inline is always
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defined independent of which C library is used in userspace
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Upstream-Status: Submitted [https://lkml.org/lkml/2018/9/13/78]
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Signed-off-by: Khem Raj <raj.khem@gmail.com>
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Cc: Philippe Ombredanne <pombredanne@nexb.com>
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Cc: Kate Stewart <kstewart@linuxfoundation.org>
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Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Cc: Thomas Gleixner <tglx@linutronix.de>
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---
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include/uapi/linux/swab.h | 1 +
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1 file changed, 1 insertion(+)
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diff --git a/include/uapi/linux/swab.h b/include/uapi/linux/swab.h
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index 7272f85d6..2912fe463 100644
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--- a/include/uapi/linux/swab.h
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+++ b/include/uapi/linux/swab.h
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@@ -3,6 +3,7 @@
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#define _UAPI_LINUX_SWAB_H
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#include <linux/types.h>
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+#include <linux/stddef.h>
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#include <linux/compiler.h>
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#include <asm/bitsperlong.h>
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#include <asm/swab.h>
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