diff options
| author | Masahiro Yamada <yamada.masahiro@socionext.com> | 2019-11-13 16:12:02 +0900 |
|---|---|---|
| committer | Rob Herring <robh@kernel.org> | 2019-11-26 13:35:25 -0700 |
| commit | a8de1304b7df30e3a14f2a8b9709bb4ff31a0385 (patch) | |
| tree | 456d9f44e0681816a20ce826d8e8898313c18c96 | |
| parent | 30a3e01d4cbbfedac48d69a415136000a36910c7 (diff) | |
libfdt: define INT32_MAX and UINT32_MAX in libfdt_env.h
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>
| -rw-r--r-- | arch/arm/boot/compressed/libfdt_env.h | 4 | ||||
| -rw-r--r-- | arch/powerpc/boot/libfdt_env.h | 2 | ||||
| -rw-r--r-- | include/linux/libfdt_env.h | 3 |
3 files changed, 8 insertions, 1 deletions
diff --git a/arch/arm/boot/compressed/libfdt_env.h b/arch/arm/boot/compressed/libfdt_env.h index b36c0289a308..6a0f1f524466 100644 --- a/arch/arm/boot/compressed/libfdt_env.h +++ b/arch/arm/boot/compressed/libfdt_env.h @@ -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; diff --git a/arch/powerpc/boot/libfdt_env.h b/arch/powerpc/boot/libfdt_env.h index 2abc8e83b95e..9757d4f6331e 100644 --- a/arch/powerpc/boot/libfdt_env.h +++ b/arch/powerpc/boot/libfdt_env.h @@ -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" diff --git a/include/linux/libfdt_env.h b/include/linux/libfdt_env.h index 2231eb855e8f..cea8574a29b1 100644 --- a/include/linux/libfdt_env.h +++ b/include/linux/libfdt_env.h @@ -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; |