From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Sasha Levin <sashal@kernel.org>,
Masahiro Yamada <yamada.masahiro@socionext.com>,
linuxppc-dev@lists.ozlabs.org,
linux-arm-kernel@lists.infradead.org,
Rob Herring <robh@kernel.org>
Subject: [PATCH AUTOSEL 4.4 34/37] libfdt: define INT32_MAX and UINT32_MAX in libfdt_env.h
Date: Wed, 11 Dec 2019 10:38:10 -0500 [thread overview]
Message-ID: <20191211153813.24126-34-sashal@kernel.org> (raw)
In-Reply-To: <20191211153813.24126-1-sashal@kernel.org>
From: Masahiro Yamada <yamada.masahiro@socionext.com>
[ Upstream commit a8de1304b7df30e3a14f2a8b9709bb4ff31a0385 ]
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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
arch/arm/boot/compressed/libfdt_env.h | 4 +++-
arch/powerpc/boot/libfdt_env.h | 2 ++
include/linux/libfdt_env.h | 3 +++
3 files changed, 8 insertions(+), 1 deletion(-)
diff --git a/arch/arm/boot/compressed/libfdt_env.h b/arch/arm/boot/compressed/libfdt_env.h
index 005bf4ff1b4cb..f3ddd4f599e3e 100644
--- a/arch/arm/boot/compressed/libfdt_env.h
+++ b/arch/arm/boot/compressed/libfdt_env.h
@@ -1,11 +1,13 @@
#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 0b3db6322c793..5f2cb1c53e151 100644
--- a/arch/powerpc/boot/libfdt_env.h
+++ b/arch/powerpc/boot/libfdt_env.h
@@ -5,6 +5,8 @@
#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 8850e243c9406..bd0a55821177a 100644
--- a/include/linux/libfdt_env.h
+++ b/include/linux/libfdt_env.h
@@ -6,6 +6,9 @@
#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;
--
2.20.1
prev parent reply other threads:[~2019-12-11 17:58 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20191211153813.24126-1-sashal@kernel.org>
2019-12-11 15:37 ` [PATCH AUTOSEL 4.4 08/37] powerpc/pseries: Mark accumulate_stolen_time() as notrace Sasha Levin
2019-12-11 15:37 ` [PATCH AUTOSEL 4.4 11/37] powerpc/security/book3s64: Report L1TF status in sysfs Sasha Levin
2019-12-11 15:37 ` [PATCH AUTOSEL 4.4 22/37] powerpc/pseries/cmm: Implement release() function for sysfs device Sasha Levin
2019-12-11 15:37 ` [PATCH AUTOSEL 4.4 23/37] powerpc/security: Fix wrong message when RFI Flush is disable Sasha Levin
2019-12-11 15:38 ` Sasha Levin [this message]
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