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libfdt: define INT32_MAX and UINT32_MAX in libfdt_env.h

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The DTC v1.5.1 added references to (U)INT32_MAX.

This is no problem for user-space programs since <stdint.h> defines
(U)INT32_MAX along with (u)int32_t.

For the kernel space, libfdt_env.h needs to be adjusted before we
pull in the changes.

In the kernel, we usually use s/u32 instead of (u)int32_t for the
fixed-width types.

Accordingly, we already have S/U32_MAX for their max values.
So, we should not add (U)INT32_MAX to <linux/limits.h> any more.

Instead, add them to the in-kernel libfdt_env.h to compile the
latest libfdt.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Rob Herring <robh@kernel.org>
This commit is contained in:
Masahiro Yamada 2019-11-13 16:12:02 +09:00 committed by Rob Herring
parent 30a3e01d4c
commit a8de1304b7
3 changed files with 8 additions and 1 deletions
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4
arch/arm/boot/compressed/libfdt_env.h
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@ -2,11 +2,13 @@
#ifndef _ARM_LIBFDT_ENV_H
#define _ARM_LIBFDT_ENV_H
#include <linux/limits.h>
#include <linux/types.h>
#include <linux/string.h>
#include <asm/byteorder.h>
#define INT_MAX ((int)(~0U>>1))
#define INT32_MAX S32_MAX
#define UINT32_MAX U32_MAX
typedef __be16 fdt16_t;
typedef __be32 fdt32_t;

2
arch/powerpc/boot/libfdt_env.h
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@ -6,6 +6,8 @@
#include <string.h>
#define INT_MAX ((int)(~0U>>1))
#define UINT32_MAX ((u32)~0U)
#define INT32_MAX ((s32)(UINT32_MAX >> 1))
#include "of.h"

3
include/linux/libfdt_env.h
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@ -7,6 +7,9 @@
#include <asm/byteorder.h>
#define INT32_MAX S32_MAX
#define UINT32_MAX U32_MAX
typedef __be16 fdt16_t;
typedef __be32 fdt32_t;
typedef __be64 fdt64_t;